From fcbddfc6ae2a4ea45bd180b2085bc591aeb0cc37 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 14:48:09 +0200
Subject: [PATCH 01/16] reference: use consistent names for test-tables

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 reference/normalize_test.go |  64 ++++++------
 reference/reference_test.go | 190 ++++++++++++++++++------------------
 reference/regexp_test.go    |  16 +--
 3 files changed, 135 insertions(+), 135 deletions(-)

diff --git a/reference/normalize_test.go b/reference/normalize_test.go
index 22803672c..ef3944bef 100644
--- a/reference/normalize_test.go
+++ b/reference/normalize_test.go
@@ -146,7 +146,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		RemoteName, FamiliarName, FullName, AmbiguousName, Domain string
 	}
 
-	tcases := []tcase{
+	tests := []tcase{
 		{
 			RemoteName:    "fooo/bar",
 			FamiliarName:  "fooo/bar",
@@ -261,7 +261,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		},
 	}
 
-	for i, tc := range tcases {
+	for i, tc := range tests {
 		tc := tc
 		refStrings := []string{tc.FamiliarName, tc.FullName}
 		if tc.AmbiguousName != "" {
@@ -367,7 +367,7 @@ func equalReference(r1, r2 Reference) bool {
 
 func TestParseAnyReference(t *testing.T) {
 	t.Parallel()
-	tcases := []struct {
+	tests := []struct {
 		Reference  string
 		Equivalent string
 		Expected   Reference
@@ -432,22 +432,22 @@ func TestParseAnyReference(t *testing.T) {
 		},
 	}
 
-	for _, tcase := range tcases {
+	for _, tc := range tests {
 		var ref Reference
 		var err error
-		ref, err = ParseAnyReference(tcase.Reference)
+		ref, err = ParseAnyReference(tc.Reference)
 		if err != nil {
-			t.Fatalf("Error parsing reference %s: %v", tcase.Reference, err)
+			t.Fatalf("Error parsing reference %s: %v", tc.Reference, err)
 		}
-		if ref.String() != tcase.Equivalent {
-			t.Fatalf("Unexpected string: %s, expected %s", ref.String(), tcase.Equivalent)
+		if ref.String() != tc.Equivalent {
+			t.Fatalf("Unexpected string: %s, expected %s", ref.String(), tc.Equivalent)
 		}
 
-		expected := tcase.Expected
+		expected := tc.Expected
 		if expected == nil {
-			expected, err = Parse(tcase.Equivalent)
+			expected, err = Parse(tc.Equivalent)
 			if err != nil {
-				t.Fatalf("Error parsing reference %s: %v", tcase.Equivalent, err)
+				t.Fatalf("Error parsing reference %s: %v", tc.Equivalent, err)
 			}
 		}
 		if !equalReference(ref, expected) {
@@ -458,7 +458,7 @@ func TestParseAnyReference(t *testing.T) {
 
 func TestNormalizedSplitHostname(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		input  string
 		domain string
 		name   string
@@ -519,22 +519,22 @@ func TestNormalizedSplitHostname(t *testing.T) {
 			name:   "library/foo/bar",
 		},
 	}
-	for _, testcase := range testcases {
+	for _, tc := range tests {
 		failf := func(format string, v ...interface{}) {
-			t.Logf(strconv.Quote(testcase.input)+": "+format, v...)
+			t.Logf(strconv.Quote(tc.input)+": "+format, v...)
 			t.Fail()
 		}
 
-		named, err := ParseNormalizedNamed(testcase.input)
+		named, err := ParseNormalizedNamed(tc.input)
 		if err != nil {
 			failf("error parsing name: %s", err)
 		}
 		domain, name := SplitHostname(named)
-		if domain != testcase.domain {
-			failf("unexpected domain: got %q, expected %q", domain, testcase.domain)
+		if domain != tc.domain {
+			failf("unexpected domain: got %q, expected %q", domain, tc.domain)
 		}
-		if name != testcase.name {
-			failf("unexpected name: got %q, expected %q", name, testcase.name)
+		if name != tc.name {
+			failf("unexpected name: got %q, expected %q", name, tc.name)
 		}
 	}
 }
@@ -553,7 +553,7 @@ func TestMatchError(t *testing.T) {
 
 func TestMatch(t *testing.T) {
 	t.Parallel()
-	matchCases := []struct {
+	tests := []struct {
 		reference string
 		pattern   string
 		expected  bool
@@ -604,24 +604,24 @@ func TestMatch(t *testing.T) {
 			expected:  true,
 		},
 	}
-	for _, c := range matchCases {
-		named, err := ParseAnyReference(c.reference)
+	for _, tc := range tests {
+		named, err := ParseAnyReference(tc.reference)
 		if err != nil {
 			t.Fatal(err)
 		}
-		actual, err := FamiliarMatch(c.pattern, named)
+		actual, err := FamiliarMatch(tc.pattern, named)
 		if err != nil {
 			t.Fatal(err)
 		}
-		if actual != c.expected {
-			t.Fatalf("expected %s match %s to be %v, was %v", c.reference, c.pattern, c.expected, actual)
+		if actual != tc.expected {
+			t.Fatalf("expected %s match %s to be %v, was %v", tc.reference, tc.pattern, tc.expected, actual)
 		}
 	}
 }
 
 func TestParseDockerRef(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		name     string
 		input    string
 		expected string
@@ -682,17 +682,17 @@ func TestParseDockerRef(t *testing.T) {
 			expected: "gcr.io/library/busybox@sha256:e6693c20186f837fc393390135d8a598a96a833917917789d63766cab6c59582",
 		},
 	}
-	for _, test := range testcases {
-		test := test
-		t.Run(test.name, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
-			normalized, err := ParseDockerRef(test.input)
+			normalized, err := ParseDockerRef(tc.input)
 			if err != nil {
 				t.Fatal(err)
 			}
 			output := normalized.String()
-			if output != test.expected {
-				t.Fatalf("expected %q to be parsed as %v, got %v", test.input, test.expected, output)
+			if output != tc.expected {
+				t.Fatalf("expected %q to be parsed as %v, got %v", tc.input, tc.expected, output)
 			}
 			_, err = Parse(output)
 			if err != nil {
diff --git a/reference/reference_test.go b/reference/reference_test.go
index 5d6878cfe..d5a897c75 100644
--- a/reference/reference_test.go
+++ b/reference/reference_test.go
@@ -12,9 +12,9 @@ import (
 
 func TestReferenceParse(t *testing.T) {
 	t.Parallel()
-	// referenceTestcases is a unified set of testcases for
+	// tests is a unified set of testcases for
 	// testing the parsing of references
-	referenceTestcases := []struct {
+	tests := []struct {
 		// input is the repository name or name component testcase
 		input string
 		// err is the error expected from Parse, or nil
@@ -267,43 +267,43 @@ func TestReferenceParse(t *testing.T) {
 			err:   ErrReferenceInvalidFormat,
 		},
 	}
-	for _, testcase := range referenceTestcases {
-		testcase := testcase
-		t.Run(testcase.input, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
-			repo, err := Parse(testcase.input)
-			if testcase.err != nil {
+			repo, err := Parse(tc.input)
+			if tc.err != nil {
 				if err == nil {
-					t.Errorf("missing expected error: %v", testcase.err)
-				} else if testcase.err != err {
-					t.Errorf("mismatched error: got %v, expected %v", err, testcase.err)
+					t.Errorf("missing expected error: %v", tc.err)
+				} else if tc.err != err {
+					t.Errorf("mismatched error: got %v, expected %v", err, tc.err)
 				}
 				return
 			} else if err != nil {
 				t.Errorf("unexpected parse error: %v", err)
 				return
 			}
-			if repo.String() != testcase.input {
-				t.Errorf("mismatched repo: got %q, expected %q", repo.String(), testcase.input)
+			if repo.String() != tc.input {
+				t.Errorf("mismatched repo: got %q, expected %q", repo.String(), tc.input)
 			}
 
 			if named, ok := repo.(Named); ok {
-				if named.Name() != testcase.repository {
-					t.Errorf("unexpected repository: got %q, expected %q", named.Name(), testcase.repository)
+				if named.Name() != tc.repository {
+					t.Errorf("unexpected repository: got %q, expected %q", named.Name(), tc.repository)
 				}
 				domain, _ := SplitHostname(named)
-				if domain != testcase.domain {
-					t.Errorf("unexpected domain: got %q, expected %q", domain, testcase.domain)
+				if domain != tc.domain {
+					t.Errorf("unexpected domain: got %q, expected %q", domain, tc.domain)
 				}
-			} else if testcase.repository != "" || testcase.domain != "" {
+			} else if tc.repository != "" || tc.domain != "" {
 				t.Errorf("expected named type, got %T", repo)
 			}
 
 			tagged, ok := repo.(Tagged)
-			if testcase.tag != "" {
+			if tc.tag != "" {
 				if ok {
-					if tagged.Tag() != testcase.tag {
-						t.Errorf("unexpected tag: got %q, expected %q", tagged.Tag(), testcase.tag)
+					if tagged.Tag() != tc.tag {
+						t.Errorf("unexpected tag: got %q, expected %q", tagged.Tag(), tc.tag)
 					}
 				} else {
 					t.Errorf("expected tagged type, got %T", repo)
@@ -313,10 +313,10 @@ func TestReferenceParse(t *testing.T) {
 			}
 
 			digested, ok := repo.(Digested)
-			if testcase.digest != "" {
+			if tc.digest != "" {
 				if ok {
-					if digested.Digest().String() != testcase.digest {
-						t.Errorf("unexpected digest: got %q, expected %q", digested.Digest().String(), testcase.digest)
+					if digested.Digest().String() != tc.digest {
+						t.Errorf("unexpected digest: got %q, expected %q", digested.Digest().String(), tc.digest)
 					}
 				} else {
 					t.Errorf("expected digested type, got %T", repo)
@@ -332,7 +332,7 @@ func TestReferenceParse(t *testing.T) {
 // should succeed are covered by TestSplitHostname, below.
 func TestWithNameFailure(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		input string
 		err   error
 	}{
@@ -361,13 +361,13 @@ func TestWithNameFailure(t *testing.T) {
 			err:   ErrReferenceInvalidFormat,
 		},
 	}
-	for _, testcase := range testcases {
-		testcase := testcase
-		t.Run(testcase.input, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
-			_, err := WithName(testcase.input)
+			_, err := WithName(tc.input)
 			if err == nil {
-				t.Errorf("no error parsing name. expected: %s", testcase.err)
+				t.Errorf("no error parsing name. expected: %s", tc.err)
 			}
 		})
 	}
@@ -375,7 +375,7 @@ func TestWithNameFailure(t *testing.T) {
 
 func TestSplitHostname(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		input  string
 		domain string
 		name   string
@@ -411,20 +411,20 @@ func TestSplitHostname(t *testing.T) {
 			name:   "foo",
 		},
 	}
-	for _, testcase := range testcases {
-		testcase := testcase
-		t.Run(testcase.input, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
-			named, err := WithName(testcase.input)
+			named, err := WithName(tc.input)
 			if err != nil {
 				t.Errorf("error parsing name: %s", err)
 			}
 			domain, name := SplitHostname(named)
-			if domain != testcase.domain {
-				t.Errorf("unexpected domain: got %q, expected %q", domain, testcase.domain)
+			if domain != tc.domain {
+				t.Errorf("unexpected domain: got %q, expected %q", domain, tc.domain)
 			}
-			if name != testcase.name {
-				t.Errorf("unexpected name: got %q, expected %q", name, testcase.name)
+			if name != tc.name {
+				t.Errorf("unexpected name: got %q, expected %q", name, tc.name)
 			}
 		})
 	}
@@ -437,7 +437,7 @@ type serializationType struct {
 
 func TestSerialization(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		description string
 		input       string
 		name        string
@@ -467,13 +467,13 @@ func TestSerialization(t *testing.T) {
 			digest:      "sha256:1234567890098765432112345667890098765432112345667890098765432112",
 		},
 	}
-	for _, testcase := range testcases {
-		testcase := testcase
-		t.Run(testcase.description, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.description, func(t *testing.T) {
 			t.Parallel()
 			m := map[string]string{
-				"Description": testcase.description,
-				"Field":       testcase.input,
+				"Description": tc.description,
+				"Field":       tc.input,
 			}
 			b, err := json.Marshal(m)
 			if err != nil {
@@ -482,37 +482,37 @@ func TestSerialization(t *testing.T) {
 			st := serializationType{}
 
 			if err := json.Unmarshal(b, &st); err != nil {
-				if testcase.err == nil {
+				if tc.err == nil {
 					t.Errorf("error unmarshalling: %v", err)
 				}
-				if err != testcase.err {
-					t.Errorf("wrong error, expected %v, got %v", testcase.err, err)
+				if err != tc.err {
+					t.Errorf("wrong error, expected %v, got %v", tc.err, err)
 				}
 
 				return
-			} else if testcase.err != nil {
-				t.Errorf("expected error unmarshalling: %v", testcase.err)
+			} else if tc.err != nil {
+				t.Errorf("expected error unmarshalling: %v", tc.err)
 			}
 
-			if st.Description != testcase.description {
-				t.Errorf("wrong description, expected %q, got %q", testcase.description, st.Description)
+			if st.Description != tc.description {
+				t.Errorf("wrong description, expected %q, got %q", tc.description, st.Description)
 			}
 
 			ref := st.Field.Reference()
 
 			if named, ok := ref.(Named); ok {
-				if named.Name() != testcase.name {
-					t.Errorf("unexpected repository: got %q, expected %q", named.Name(), testcase.name)
+				if named.Name() != tc.name {
+					t.Errorf("unexpected repository: got %q, expected %q", named.Name(), tc.name)
 				}
-			} else if testcase.name != "" {
+			} else if tc.name != "" {
 				t.Errorf("expected named type, got %T", ref)
 			}
 
 			tagged, ok := ref.(Tagged)
-			if testcase.tag != "" {
+			if tc.tag != "" {
 				if ok {
-					if tagged.Tag() != testcase.tag {
-						t.Errorf("unexpected tag: got %q, expected %q", tagged.Tag(), testcase.tag)
+					if tagged.Tag() != tc.tag {
+						t.Errorf("unexpected tag: got %q, expected %q", tagged.Tag(), tc.tag)
 					}
 				} else {
 					t.Errorf("expected tagged type, got %T", ref)
@@ -522,10 +522,10 @@ func TestSerialization(t *testing.T) {
 			}
 
 			digested, ok := ref.(Digested)
-			if testcase.digest != "" {
+			if tc.digest != "" {
 				if ok {
-					if digested.Digest().String() != testcase.digest {
-						t.Errorf("unexpected digest: got %q, expected %q", digested.Digest().String(), testcase.digest)
+					if digested.Digest().String() != tc.digest {
+						t.Errorf("unexpected digest: got %q, expected %q", digested.Digest().String(), tc.digest)
 					}
 				} else {
 					t.Errorf("expected digested type, got %T", ref)
@@ -535,7 +535,7 @@ func TestSerialization(t *testing.T) {
 			}
 
 			st = serializationType{
-				Description: testcase.description,
+				Description: tc.description,
 				Field:       AsField(ref),
 			}
 
@@ -560,7 +560,7 @@ func TestSerialization(t *testing.T) {
 
 func TestWithTag(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		name     string
 		digest   digest.Digest
 		tag      string
@@ -593,28 +593,28 @@ func TestWithTag(t *testing.T) {
 			combined: "test.com:8000/foo:TAG5@sha256:1234567890098765432112345667890098765",
 		},
 	}
-	for _, testcase := range testcases {
-		testcase := testcase
-		t.Run(testcase.combined, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.combined, func(t *testing.T) {
 			t.Parallel()
-			named, err := WithName(testcase.name)
+			named, err := WithName(tc.name)
 			if err != nil {
 				t.Errorf("error parsing name: %s", err)
 			}
-			if testcase.digest != "" {
-				canonical, err := WithDigest(named, testcase.digest)
+			if tc.digest != "" {
+				canonical, err := WithDigest(named, tc.digest)
 				if err != nil {
 					t.Errorf("error adding digest")
 				}
 				named = canonical
 			}
 
-			tagged, err := WithTag(named, testcase.tag)
+			tagged, err := WithTag(named, tc.tag)
 			if err != nil {
 				t.Errorf("WithTag failed: %s", err)
 			}
-			if tagged.String() != testcase.combined {
-				t.Errorf("unexpected: got %q, expected %q", tagged.String(), testcase.combined)
+			if tagged.String() != tc.combined {
+				t.Errorf("unexpected: got %q, expected %q", tagged.String(), tc.combined)
 			}
 		})
 	}
@@ -622,7 +622,7 @@ func TestWithTag(t *testing.T) {
 
 func TestWithDigest(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		name     string
 		digest   digest.Digest
 		tag      string
@@ -650,27 +650,27 @@ func TestWithDigest(t *testing.T) {
 			combined: "test.com:8000/foo:latest@sha256:1234567890098765432112345667890098765",
 		},
 	}
-	for _, testcase := range testcases {
-		testcase := testcase
-		t.Run(testcase.combined, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.combined, func(t *testing.T) {
 			t.Parallel()
-			named, err := WithName(testcase.name)
+			named, err := WithName(tc.name)
 			if err != nil {
 				t.Errorf("error parsing name: %s", err)
 			}
-			if testcase.tag != "" {
-				tagged, err := WithTag(named, testcase.tag)
+			if tc.tag != "" {
+				tagged, err := WithTag(named, tc.tag)
 				if err != nil {
 					t.Errorf("error adding tag")
 				}
 				named = tagged
 			}
-			digested, err := WithDigest(named, testcase.digest)
+			digested, err := WithDigest(named, tc.digest)
 			if err != nil {
 				t.Errorf("WithDigest failed: %s", err)
 			}
-			if digested.String() != testcase.combined {
-				t.Errorf("unexpected: got %q, expected %q", digested.String(), testcase.combined)
+			if digested.String() != tc.combined {
+				t.Errorf("unexpected: got %q, expected %q", digested.String(), tc.combined)
 			}
 		})
 	}
@@ -678,7 +678,7 @@ func TestWithDigest(t *testing.T) {
 
 func TestParseNamed(t *testing.T) {
 	t.Parallel()
-	testcases := []struct {
+	tests := []struct {
 		input  string
 		domain string
 		name   string
@@ -721,30 +721,30 @@ func TestParseNamed(t *testing.T) {
 			err:   ErrNameNotCanonical,
 		},
 	}
-	for _, testcase := range testcases {
-		testcase := testcase
-		t.Run(testcase.input, func(t *testing.T) {
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
-			named, err := ParseNamed(testcase.input)
-			if err != nil && testcase.err == nil {
+			named, err := ParseNamed(tc.input)
+			if err != nil && tc.err == nil {
 				t.Errorf("error parsing name: %s", err)
 				return
-			} else if err == nil && testcase.err != nil {
-				t.Errorf("parsing succeeded: expected error %v", testcase.err)
+			} else if err == nil && tc.err != nil {
+				t.Errorf("parsing succeeded: expected error %v", tc.err)
 				return
-			} else if err != testcase.err {
-				t.Errorf("unexpected error %v, expected %v", err, testcase.err)
+			} else if err != tc.err {
+				t.Errorf("unexpected error %v, expected %v", err, tc.err)
 				return
 			} else if err != nil {
 				return
 			}
 
 			domain, name := SplitHostname(named)
-			if domain != testcase.domain {
-				t.Errorf("unexpected domain: got %q, expected %q", domain, testcase.domain)
+			if domain != tc.domain {
+				t.Errorf("unexpected domain: got %q, expected %q", domain, tc.domain)
 			}
-			if name != testcase.name {
-				t.Errorf("unexpected name: got %q, expected %q", name, testcase.name)
+			if name != tc.name {
+				t.Errorf("unexpected name: got %q, expected %q", name, tc.name)
 			}
 		})
 	}
diff --git a/reference/regexp_test.go b/reference/regexp_test.go
index 44b33f01a..ca4680d31 100644
--- a/reference/regexp_test.go
+++ b/reference/regexp_test.go
@@ -36,7 +36,7 @@ func checkRegexp(t *testing.T, r *regexp.Regexp, m regexpMatch) {
 
 func TestDomainRegexp(t *testing.T) {
 	t.Parallel()
-	hostcases := []struct {
+	tests := []struct {
 		input string
 		match bool
 	}{
@@ -162,7 +162,7 @@ func TestDomainRegexp(t *testing.T) {
 		},
 	}
 	r := regexp.MustCompile(`^` + DomainRegexp.String() + `$`)
-	for _, tc := range hostcases {
+	for _, tc := range tests {
 		tc := tc
 		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
@@ -181,7 +181,7 @@ func TestFullNameRegexp(t *testing.T) {
 			anchoredNameRegexp, anchoredNameRegexp.NumSubexp())
 	}
 
-	testcases := []regexpMatch{
+	tests := []regexpMatch{
 		{
 			input: "",
 			match: false,
@@ -465,7 +465,7 @@ func TestFullNameRegexp(t *testing.T) {
 			match: false,
 		},
 	}
-	for _, tc := range testcases {
+	for _, tc := range tests {
 		tc := tc
 		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
@@ -481,7 +481,7 @@ func TestReferenceRegexp(t *testing.T) {
 			ReferenceRegexp, ReferenceRegexp.NumSubexp())
 	}
 
-	testcases := []regexpMatch{
+	tests := []regexpMatch{
 		{
 			input: "registry.com:8080/myapp:tag",
 			match: true,
@@ -540,7 +540,7 @@ func TestReferenceRegexp(t *testing.T) {
 		},
 	}
 
-	for _, tc := range testcases {
+	for _, tc := range tests {
 		tc := tc
 		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()
@@ -551,7 +551,7 @@ func TestReferenceRegexp(t *testing.T) {
 
 func TestIdentifierRegexp(t *testing.T) {
 	t.Parallel()
-	fullCases := []struct {
+	tests := []struct {
 		input string
 		match bool
 	}{
@@ -576,7 +576,7 @@ func TestIdentifierRegexp(t *testing.T) {
 			match: false,
 		},
 	}
-	for _, tc := range fullCases {
+	for _, tc := range tests {
 		tc := tc
 		t.Run(tc.input, func(t *testing.T) {
 			t.Parallel()

From fa1d14c5132c044140da59cfcbdb326e5c898cb4 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 14:58:45 +0200
Subject: [PATCH 02/16] reference: TestParseAnyReference(): use sub-tests

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 reference/normalize_test.go | 40 ++++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 18 deletions(-)

diff --git a/reference/normalize_test.go b/reference/normalize_test.go
index ef3944bef..72b1b92a8 100644
--- a/reference/normalize_test.go
+++ b/reference/normalize_test.go
@@ -433,26 +433,30 @@ func TestParseAnyReference(t *testing.T) {
 	}
 
 	for _, tc := range tests {
-		var ref Reference
-		var err error
-		ref, err = ParseAnyReference(tc.Reference)
-		if err != nil {
-			t.Fatalf("Error parsing reference %s: %v", tc.Reference, err)
-		}
-		if ref.String() != tc.Equivalent {
-			t.Fatalf("Unexpected string: %s, expected %s", ref.String(), tc.Equivalent)
-		}
-
-		expected := tc.Expected
-		if expected == nil {
-			expected, err = Parse(tc.Equivalent)
+		tc := tc
+		t.Run(tc.Reference, func(t *testing.T) {
+			t.Parallel()
+			var ref Reference
+			var err error
+			ref, err = ParseAnyReference(tc.Reference)
 			if err != nil {
-				t.Fatalf("Error parsing reference %s: %v", tc.Equivalent, err)
+				t.Fatalf("Error parsing reference %s: %v", tc.Reference, err)
 			}
-		}
-		if !equalReference(ref, expected) {
-			t.Errorf("Unexpected reference %#v, expected %#v", ref, expected)
-		}
+			if ref.String() != tc.Equivalent {
+				t.Fatalf("Unexpected string: %s, expected %s", ref.String(), tc.Equivalent)
+			}
+
+			expected := tc.Expected
+			if expected == nil {
+				expected, err = Parse(tc.Equivalent)
+				if err != nil {
+					t.Fatalf("Error parsing reference %s: %v", tc.Equivalent, err)
+				}
+			}
+			if !equalReference(ref, expected) {
+				t.Errorf("Unexpected reference %#v, expected %#v", ref, expected)
+			}
+		})
 	}
 }
 

From 2819bca991a22e384e7b4e4b127025cebec87cfb Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:00:51 +0200
Subject: [PATCH 03/16] reference: TestNormalizedSplitHostname(): use sub-tests

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 reference/normalize_test.go | 31 +++++++++++++++----------------
 1 file changed, 15 insertions(+), 16 deletions(-)

diff --git a/reference/normalize_test.go b/reference/normalize_test.go
index 72b1b92a8..acfe5ec55 100644
--- a/reference/normalize_test.go
+++ b/reference/normalize_test.go
@@ -524,22 +524,21 @@ func TestNormalizedSplitHostname(t *testing.T) {
 		},
 	}
 	for _, tc := range tests {
-		failf := func(format string, v ...interface{}) {
-			t.Logf(strconv.Quote(tc.input)+": "+format, v...)
-			t.Fail()
-		}
-
-		named, err := ParseNormalizedNamed(tc.input)
-		if err != nil {
-			failf("error parsing name: %s", err)
-		}
-		domain, name := SplitHostname(named)
-		if domain != tc.domain {
-			failf("unexpected domain: got %q, expected %q", domain, tc.domain)
-		}
-		if name != tc.name {
-			failf("unexpected name: got %q, expected %q", name, tc.name)
-		}
+		tc := tc
+		t.Run(tc.input, func(t *testing.T) {
+			t.Parallel()
+			named, err := ParseNormalizedNamed(tc.input)
+			if err != nil {
+				t.Errorf("error parsing name: %s", err)
+			}
+			domain, name := SplitHostname(named)
+			if domain != tc.domain {
+				t.Errorf("unexpected domain: got %q, expected %q", domain, tc.domain)
+			}
+			if name != tc.name {
+				t.Errorf("unexpected name: got %q, expected %q", name, tc.name)
+			}
+		})
 	}
 }
 

From f238f7dcaa9133ce208b44737fed5e0b985cc310 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:03:30 +0200
Subject: [PATCH 04/16] reference: TestMatch(): use sub-tests

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 reference/normalize_test.go | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/reference/normalize_test.go b/reference/normalize_test.go
index acfe5ec55..0932d06f4 100644
--- a/reference/normalize_test.go
+++ b/reference/normalize_test.go
@@ -608,17 +608,21 @@ func TestMatch(t *testing.T) {
 		},
 	}
 	for _, tc := range tests {
-		named, err := ParseAnyReference(tc.reference)
-		if err != nil {
-			t.Fatal(err)
-		}
-		actual, err := FamiliarMatch(tc.pattern, named)
-		if err != nil {
-			t.Fatal(err)
-		}
-		if actual != tc.expected {
-			t.Fatalf("expected %s match %s to be %v, was %v", tc.reference, tc.pattern, tc.expected, actual)
-		}
+		tc := tc
+		t.Run(tc.reference, func(t *testing.T) {
+			t.Parallel()
+			named, err := ParseAnyReference(tc.reference)
+			if err != nil {
+				t.Fatal(err)
+			}
+			actual, err := FamiliarMatch(tc.pattern, named)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if actual != tc.expected {
+				t.Fatalf("expected %s match %s to be %v, was %v", tc.reference, tc.pattern, tc.expected, actual)
+			}
+		})
 	}
 }
 

From 2829f7b7d5417580d7036521c4c55c598d7bd564 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 14:43:13 +0200
Subject: [PATCH 05/16] context: use consistent names for test-tables

Also renamed a var that collided with a type, and marked a helper
as t.Helper()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 context/http_test.go  | 20 ++++++++++----------
 context/trace_test.go | 19 ++++++++++---------
 2 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/context/http_test.go b/context/http_test.go
index 69682966f..5c741d594 100644
--- a/context/http_test.go
+++ b/context/http_test.go
@@ -22,7 +22,7 @@ func TestWithRequest(t *testing.T) {
 	req.Header.Set("User-Agent", "test/0.1")
 
 	ctx := WithRequest(Background(), &req)
-	for _, testcase := range []struct {
+	for _, tc := range []struct {
 		key      string
 		expected interface{}
 	}{
@@ -61,18 +61,18 @@ func TestWithRequest(t *testing.T) {
 			key: "http.request.startedat",
 		},
 	} {
-		v := ctx.Value(testcase.key)
+		v := ctx.Value(tc.key)
 
 		if v == nil {
-			t.Fatalf("value not found for %q", testcase.key)
+			t.Fatalf("value not found for %q", tc.key)
 		}
 
-		if testcase.expected != nil && v != testcase.expected {
-			t.Fatalf("%s: %v != %v", testcase.key, v, testcase.expected)
+		if tc.expected != nil && v != tc.expected {
+			t.Fatalf("%s: %v != %v", tc.key, v, tc.expected)
 		}
 
 		// Key specific checks!
-		switch testcase.key {
+		switch tc.key {
 		case "http.request.id":
 			if _, ok := v.(string); !ok {
 				t.Fatalf("request id not a string: %v", v)
@@ -195,7 +195,7 @@ func TestWithVars(t *testing.T) {
 	}
 
 	ctx := WithVars(Background(), &req)
-	for _, testcase := range []struct {
+	for _, tc := range []struct {
 		key      string
 		expected interface{}
 	}{
@@ -212,10 +212,10 @@ func TestWithVars(t *testing.T) {
 			expected: "qwer",
 		},
 	} {
-		v := ctx.Value(testcase.key)
+		v := ctx.Value(tc.key)
 
-		if !reflect.DeepEqual(v, testcase.expected) {
-			t.Fatalf("%q: %v != %v", testcase.key, v, testcase.expected)
+		if !reflect.DeepEqual(v, tc.expected) {
+			t.Fatalf("%q: %v != %v", tc.key, v, tc.expected)
 		}
 	}
 }
diff --git a/context/trace_test.go b/context/trace_test.go
index f973f9a46..2fcf1e65b 100644
--- a/context/trace_test.go
+++ b/context/trace_test.go
@@ -41,7 +41,7 @@ func TestWithTrace(t *testing.T) {
 		expected: f.Name(),
 	}))
 
-	traced := func() {
+	tracedFn := func() {
 		parentID := ctx.Value("trace.id") // ensure the parent trace id is correct.
 
 		pc, _, _, _ := runtime.Caller(0) // get current caller.
@@ -57,7 +57,7 @@ func TestWithTrace(t *testing.T) {
 			expected: parentID,
 		}))
 	}
-	traced()
+	tracedFn()
 
 	time.Sleep(time.Second)
 }
@@ -68,18 +68,19 @@ type valueTestCase struct {
 	notnilorempty bool // just check not empty/not nil
 }
 
-func checkContextForValues(ctx context.Context, t *testing.T, values []valueTestCase) {
-	for _, testcase := range values {
-		v := ctx.Value(testcase.key)
-		if testcase.notnilorempty {
+func checkContextForValues(ctx context.Context, t *testing.T, tests []valueTestCase) {
+	t.Helper()
+	for _, tc := range tests {
+		v := ctx.Value(tc.key)
+		if tc.notnilorempty {
 			if v == nil || v == "" {
-				t.Fatalf("value was nil or empty for %q: %#v", testcase.key, v)
+				t.Fatalf("value was nil or empty for %q: %#v", tc.key, v)
 			}
 			continue
 		}
 
-		if v != testcase.expected {
-			t.Fatalf("unexpected value for key %q: %v != %v", testcase.key, v, testcase.expected)
+		if v != tc.expected {
+			t.Fatalf("unexpected value for key %q: %v != %v", tc.key, v, tc.expected)
 		}
 	}
 }

From f4be328bff4cc94435d70ea69e6c17ac2f05c20d Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:41:20 +0200
Subject: [PATCH 06/16] context: TestWithTrace(): inline checkContextForValues,
 use sub-tests

checkContextForValues was effectively running sub-tests, but disguided
as a helper (to DRY). While it helped some duplication, rewriting it to
run subtests within a helper also was a bit confusing, so just inline
what it does.

While updating, also run tests with t.Parallel()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 context/trace_test.go | 61 +++++++++++++++++++++++++++----------------
 1 file changed, 39 insertions(+), 22 deletions(-)

diff --git a/context/trace_test.go b/context/trace_test.go
index 2fcf1e65b..4ee530bfa 100644
--- a/context/trace_test.go
+++ b/context/trace_test.go
@@ -1,7 +1,6 @@
 package context
 
 import (
-	"context"
 	"runtime"
 	"testing"
 	"time"
@@ -9,6 +8,7 @@ import (
 
 // TestWithTrace ensures that tracing has the expected values in the context.
 func TestWithTrace(t *testing.T) {
+	t.Parallel()
 	pc, file, _, _ := runtime.Caller(0) // get current caller.
 	f := runtime.FuncForPC(pc)
 
@@ -36,10 +36,27 @@ func TestWithTrace(t *testing.T) {
 	ctx, done := WithTrace(Background())
 	defer done("this will be emitted at end of test")
 
-	checkContextForValues(ctx, t, append(base, valueTestCase{
+	tests := append(base, valueTestCase{
 		key:      "trace.func",
 		expected: f.Name(),
-	}))
+	})
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.key, func(t *testing.T) {
+			t.Parallel()
+			v := ctx.Value(tc.key)
+			if tc.notnilorempty {
+				if v == nil || v == "" {
+					t.Fatalf("value was nil or empty: %#v", v)
+				}
+				return
+			}
+
+			if v != tc.expected {
+				t.Fatalf("unexpected value: %v != %v", v, tc.expected)
+			}
+		})
+	}
 
 	tracedFn := func() {
 		parentID := ctx.Value("trace.id") // ensure the parent trace id is correct.
@@ -49,13 +66,30 @@ func TestWithTrace(t *testing.T) {
 		ctx, done := WithTrace(ctx)
 		defer done("this should be subordinate to the other trace")
 		time.Sleep(time.Second)
-		checkContextForValues(ctx, t, append(base, valueTestCase{
+		tests := append(base, valueTestCase{
 			key:      "trace.func",
 			expected: f.Name(),
 		}, valueTestCase{
 			key:      "trace.parent.id",
 			expected: parentID,
-		}))
+		})
+		for _, tc := range tests {
+			tc := tc
+			t.Run(tc.key, func(t *testing.T) {
+				t.Parallel()
+				v := ctx.Value(tc.key)
+				if tc.notnilorempty {
+					if v == nil || v == "" {
+						t.Fatalf("value was nil or empty: %#v", v)
+					}
+					return
+				}
+
+				if v != tc.expected {
+					t.Fatalf("unexpected value: %v != %v", v, tc.expected)
+				}
+			})
+		}
 	}
 	tracedFn()
 
@@ -67,20 +101,3 @@ type valueTestCase struct {
 	expected      interface{}
 	notnilorempty bool // just check not empty/not nil
 }
-
-func checkContextForValues(ctx context.Context, t *testing.T, tests []valueTestCase) {
-	t.Helper()
-	for _, tc := range tests {
-		v := ctx.Value(tc.key)
-		if tc.notnilorempty {
-			if v == nil || v == "" {
-				t.Fatalf("value was nil or empty for %q: %#v", tc.key, v)
-			}
-			continue
-		}
-
-		if v != tc.expected {
-			t.Fatalf("unexpected value for key %q: %v != %v", tc.key, v, tc.expected)
-		}
-	}
-}

From e9ac1728e6ebd6ba90bf3b31bdff7422d178f4de Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 14:40:44 +0200
Subject: [PATCH 07/16] notifications: use consistent names for test tables

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 notifications/sinks_test.go | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/notifications/sinks_test.go b/notifications/sinks_test.go
index b1e51d5b0..5347bb035 100644
--- a/notifications/sinks_test.go
+++ b/notifications/sinks_test.go
@@ -73,7 +73,7 @@ func TestIgnoredSink(t *testing.T) {
 		expected         events.Event
 	}
 
-	cases := []testcase{
+	tests := []testcase{
 		{nil, nil, blob},
 		{[]string{"other"}, []string{"other"}, blob},
 		{[]string{"blob", "manifest"}, []string{"other"}, nil},
@@ -81,22 +81,22 @@ func TestIgnoredSink(t *testing.T) {
 		{[]string{"other"}, []string{"pull", "push"}, nil},
 	}
 
-	for _, c := range cases {
+	for _, tc := range tests {
 		ts := &testSink{}
-		s := newIgnoredSink(ts, c.ignoreMediaTypes, c.ignoreActions)
+		s := newIgnoredSink(ts, tc.ignoreMediaTypes, tc.ignoreActions)
 
 		if err := s.Write(blob); err != nil {
 			t.Fatalf("error writing event: %v", err)
 		}
 
 		ts.mu.Lock()
-		if !reflect.DeepEqual(ts.event, c.expected) {
-			t.Fatalf("unexpected event: %#v != %#v", ts.event, c.expected)
+		if !reflect.DeepEqual(ts.event, tc.expected) {
+			t.Fatalf("unexpected event: %#v != %#v", ts.event, tc.expected)
 		}
 		ts.mu.Unlock()
 	}
 
-	cases = []testcase{
+	tests = []testcase{
 		{nil, nil, manifest},
 		{[]string{"other"}, []string{"other"}, manifest},
 		{[]string{"blob"}, []string{"other"}, manifest},
@@ -105,17 +105,17 @@ func TestIgnoredSink(t *testing.T) {
 		{[]string{"other"}, []string{"pull", "push"}, nil},
 	}
 
-	for _, c := range cases {
+	for _, tc := range tests {
 		ts := &testSink{}
-		s := newIgnoredSink(ts, c.ignoreMediaTypes, c.ignoreActions)
+		s := newIgnoredSink(ts, tc.ignoreMediaTypes, tc.ignoreActions)
 
 		if err := s.Write(manifest); err != nil {
 			t.Fatalf("error writing event: %v", err)
 		}
 
 		ts.mu.Lock()
-		if !reflect.DeepEqual(ts.event, c.expected) {
-			t.Fatalf("unexpected event: %#v != %#v", ts.event, c.expected)
+		if !reflect.DeepEqual(ts.event, tc.expected) {
+			t.Fatalf("unexpected event: %#v != %#v", ts.event, tc.expected)
 		}
 		ts.mu.Unlock()
 	}

From 57f9f31af92f556c3a5b7e4e435c3a06a8fa077c Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 14:41:57 +0200
Subject: [PATCH 08/16] notifications: don't use un-keyed structs

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 notifications/sinks_test.go | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/notifications/sinks_test.go b/notifications/sinks_test.go
index 5347bb035..de3eae3f5 100644
--- a/notifications/sinks_test.go
+++ b/notifications/sinks_test.go
@@ -74,11 +74,11 @@ func TestIgnoredSink(t *testing.T) {
 	}
 
 	tests := []testcase{
-		{nil, nil, blob},
-		{[]string{"other"}, []string{"other"}, blob},
-		{[]string{"blob", "manifest"}, []string{"other"}, nil},
-		{[]string{"other"}, []string{"pull"}, blob},
-		{[]string{"other"}, []string{"pull", "push"}, nil},
+		{expected: blob},
+		{ignoreMediaTypes: []string{"other"}, ignoreActions: []string{"other"}, expected: blob},
+		{ignoreMediaTypes: []string{"blob", "manifest"}, ignoreActions: []string{"other"}},
+		{ignoreMediaTypes: []string{"other"}, ignoreActions: []string{"pull"}, expected: blob},
+		{ignoreMediaTypes: []string{"other"}, ignoreActions: []string{"pull", "push"}},
 	}
 
 	for _, tc := range tests {
@@ -97,12 +97,12 @@ func TestIgnoredSink(t *testing.T) {
 	}
 
 	tests = []testcase{
-		{nil, nil, manifest},
-		{[]string{"other"}, []string{"other"}, manifest},
-		{[]string{"blob"}, []string{"other"}, manifest},
-		{[]string{"blob", "manifest"}, []string{"other"}, nil},
-		{[]string{"other"}, []string{"push"}, manifest},
-		{[]string{"other"}, []string{"pull", "push"}, nil},
+		{expected: manifest},
+		{ignoreMediaTypes: []string{"other"}, ignoreActions: []string{"other"}, expected: manifest},
+		{ignoreMediaTypes: []string{"blob"}, ignoreActions: []string{"other"}, expected: manifest},
+		{ignoreMediaTypes: []string{"blob", "manifest"}, ignoreActions: []string{"other"}},
+		{ignoreMediaTypes: []string{"other"}, ignoreActions: []string{"push"}, expected: manifest},
+		{ignoreMediaTypes: []string{"other"}, ignoreActions: []string{"pull", "push"}},
 	}
 
 	for _, tc := range tests {

From f884a079dff8222766b5b373140ad2255bbdf2b8 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:23:44 +0200
Subject: [PATCH 09/16] registry/api/errorcode: TestErrorCodes: use sub-tests

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 registry/api/errcode/errors_test.go | 78 +++++++++++++++--------------
 1 file changed, 41 insertions(+), 37 deletions(-)

diff --git a/registry/api/errcode/errors_test.go b/registry/api/errcode/errors_test.go
index 89ee9f3d4..6a7eb7d2a 100644
--- a/registry/api/errcode/errors_test.go
+++ b/registry/api/errcode/errors_test.go
@@ -34,57 +34,61 @@ var ErrorCodeTest3 = Register("test.errors", ErrorDescriptor{
 // TestErrorCodes ensures that error code format, mappings and
 // marshaling/unmarshaling. round trips are stable.
 func TestErrorCodes(t *testing.T) {
+	t.Parallel()
 	if len(errorCodeToDescriptors) == 0 {
 		t.Fatal("errors aren't loaded!")
 	}
 
 	for ec, desc := range errorCodeToDescriptors {
-		if ec != desc.Code {
-			t.Fatalf("error code in descriptor isn't correct, %q != %q", ec, desc.Code)
-		}
+		t.Run(ec.String(), func(t *testing.T) {
+			t.Parallel()
+			if ec != desc.Code {
+				t.Fatalf("error code in descriptor isn't correct, %q != %q", ec, desc.Code)
+			}
 
-		if idToDescriptors[desc.Value].Code != ec {
-			t.Fatalf("error code in idToDesc isn't correct, %q != %q", idToDescriptors[desc.Value].Code, ec)
-		}
+			if idToDescriptors[desc.Value].Code != ec {
+				t.Fatalf("error code in idToDesc isn't correct, %q != %q", idToDescriptors[desc.Value].Code, ec)
+			}
 
-		if ec.Message() != desc.Message {
-			t.Fatalf("ec.Message doesn't mtach desc.Message: %q != %q", ec.Message(), desc.Message)
-		}
+			if ec.Message() != desc.Message {
+				t.Fatalf("ec.Message doesn't match desc.Message: %q != %q", ec.Message(), desc.Message)
+			}
 
-		// Test (de)serializing the ErrorCode
-		p, err := json.Marshal(ec)
-		if err != nil {
-			t.Fatalf("couldn't marshal ec %v: %v", ec, err)
-		}
+			// Test (de)serializing the ErrorCode
+			p, err := json.Marshal(ec)
+			if err != nil {
+				t.Fatalf("couldn't marshal ec %v: %v", ec, err)
+			}
 
-		if len(p) <= 0 {
-			t.Fatalf("expected content in marshaled before for error code %v", ec)
-		}
+			if len(p) <= 0 {
+				t.Fatalf("expected content in marshaled before for error code %v", ec)
+			}
 
-		// First, unmarshal to interface and ensure we have a string.
-		var ecUnspecified interface{}
-		if err := json.Unmarshal(p, &ecUnspecified); err != nil {
-			t.Fatalf("error unmarshaling error code %v: %v", ec, err)
-		}
+			// First, unmarshal to interface and ensure we have a string.
+			var ecUnspecified interface{}
+			if err := json.Unmarshal(p, &ecUnspecified); err != nil {
+				t.Fatalf("error unmarshaling error code %v: %v", ec, err)
+			}
 
-		if _, ok := ecUnspecified.(string); !ok {
-			t.Fatalf("expected a string for error code %v on unmarshal got a %T", ec, ecUnspecified)
-		}
+			if _, ok := ecUnspecified.(string); !ok {
+				t.Fatalf("expected a string for error code %v on unmarshal got a %T", ec, ecUnspecified)
+			}
 
-		// Now, unmarshal with the error code type and ensure they are equal
-		var ecUnmarshaled ErrorCode
-		if err := json.Unmarshal(p, &ecUnmarshaled); err != nil {
-			t.Fatalf("error unmarshaling error code %v: %v", ec, err)
-		}
+			// Now, unmarshal with the error code type and ensure they are equal
+			var ecUnmarshaled ErrorCode
+			if err := json.Unmarshal(p, &ecUnmarshaled); err != nil {
+				t.Fatalf("error unmarshaling error code %v: %v", ec, err)
+			}
 
-		if ecUnmarshaled != ec {
-			t.Fatalf("unexpected error code during error code marshal/unmarshal: %v != %v", ecUnmarshaled, ec)
-		}
+			if ecUnmarshaled != ec {
+				t.Fatalf("unexpected error code during error code marshal/unmarshal: %v != %v", ecUnmarshaled, ec)
+			}
 
-		expectedErrorString := strings.ToLower(strings.Replace(ec.Descriptor().Value, "_", " ", -1))
-		if ec.Error() != expectedErrorString {
-			t.Fatalf("unexpected return from %v.Error(): %q != %q", ec, ec.Error(), expectedErrorString)
-		}
+			expectedErrorString := strings.ToLower(strings.Replace(ec.Descriptor().Value, "_", " ", -1))
+			if ec.Error() != expectedErrorString {
+				t.Fatalf("unexpected return from %v.Error(): %q != %q", ec, ec.Error(), expectedErrorString)
+			}
+		})
 	}
 }
 

From 5e67a40e0865c881f1d4878b429a5d88724630bf Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:05:51 +0200
Subject: [PATCH 10/16] registry/auth/token: use consistent names for
 test-tables

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 registry/auth/token/types_test.go | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/registry/auth/token/types_test.go b/registry/auth/token/types_test.go
index 5e5477611..f86786002 100644
--- a/registry/auth/token/types_test.go
+++ b/registry/auth/token/types_test.go
@@ -7,7 +7,7 @@ import (
 
 func TestAudienceList_Unmarshal(t *testing.T) {
 	t.Run("OK", func(t *testing.T) {
-		testCases := []struct {
+		tests := []struct {
 			value    string
 			expected AudienceList
 		}{
@@ -25,18 +25,17 @@ func TestAudienceList_Unmarshal(t *testing.T) {
 			},
 		}
 
-		for _, testCase := range testCases {
-			testCase := testCase
-
+		for _, tc := range tests {
+			tc := tc
 			t.Run("", func(t *testing.T) {
 				var actual AudienceList
 
-				err := json.Unmarshal([]byte(testCase.value), &actual)
+				err := json.Unmarshal([]byte(tc.value), &actual)
 				if err != nil {
 					t.Fatal(err)
 				}
 
-				assertStringListEqual(t, testCase.expected, actual)
+				assertStringListEqual(t, tc.expected, actual)
 			})
 		}
 	})

From 9266220c2a3c8dd4202c542472bde57594efef41 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:09:41 +0200
Subject: [PATCH 11/16] registry/auth/token: TestAudienceList_Unmarshal:
 t.Parallel()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 registry/auth/token/types_test.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/registry/auth/token/types_test.go b/registry/auth/token/types_test.go
index f86786002..5e45c0489 100644
--- a/registry/auth/token/types_test.go
+++ b/registry/auth/token/types_test.go
@@ -6,6 +6,7 @@ import (
 )
 
 func TestAudienceList_Unmarshal(t *testing.T) {
+	t.Parallel()
 	t.Run("OK", func(t *testing.T) {
 		tests := []struct {
 			value    string
@@ -28,6 +29,7 @@ func TestAudienceList_Unmarshal(t *testing.T) {
 		for _, tc := range tests {
 			tc := tc
 			t.Run("", func(t *testing.T) {
+				t.Parallel()
 				var actual AudienceList
 
 				err := json.Unmarshal([]byte(tc.value), &actual)
@@ -41,6 +43,7 @@ func TestAudienceList_Unmarshal(t *testing.T) {
 	})
 
 	t.Run("Error", func(t *testing.T) {
+		t.Parallel()
 		var actual AudienceList
 
 		err := json.Unmarshal([]byte("1234"), &actual)

From 2444c3282de621dc7c2f5d58667565dc032862ff Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:14:30 +0200
Subject: [PATCH 12/16] registry/api/v2: use consistent names for test-tables

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 registry/api/v2/routes_test.go | 60 +++++++++++++++++-----------------
 registry/api/v2/urls_test.go   | 54 +++++++++++++++---------------
 2 files changed, 57 insertions(+), 57 deletions(-)

diff --git a/registry/api/v2/routes_test.go b/registry/api/v2/routes_test.go
index b91fc48f4..efea869c0 100644
--- a/registry/api/v2/routes_test.go
+++ b/registry/api/v2/routes_test.go
@@ -29,7 +29,7 @@ type routeTestCase struct {
 //
 // This may go away as the application structure comes together.
 func TestRouter(t *testing.T) {
-	testCases := []routeTestCase{
+	tests := []routeTestCase{
 		{
 			RouteName:  RouteNameBase,
 			RequestURI: "/v2/",
@@ -172,12 +172,12 @@ func TestRouter(t *testing.T) {
 		},
 	}
 
-	checkTestRouter(t, testCases, "", true)
-	checkTestRouter(t, testCases, "/prefix/", true)
+	checkTestRouter(t, tests, "", true)
+	checkTestRouter(t, tests, "/prefix/", true)
 }
 
 func TestRouterWithPathTraversals(t *testing.T) {
-	testCases := []routeTestCase{
+	tests := []routeTestCase{
 		{
 			RouteName:   RouteNameBlobUploadChunk,
 			RequestURI:  "/v2/foo/../../blobs/uploads/D95306FA-FAD3-4E36-8D41-CF1C93EF8286",
@@ -194,12 +194,12 @@ func TestRouterWithPathTraversals(t *testing.T) {
 			},
 		},
 	}
-	checkTestRouter(t, testCases, "", false)
+	checkTestRouter(t, tests, "", false)
 }
 
 func TestRouterWithBadCharacters(t *testing.T) {
 	if testing.Short() {
-		testCases := []routeTestCase{
+		tests := []routeTestCase{
 			{
 				RouteName:  RouteNameBlobUploadChunk,
 				RequestURI: "/v2/foo/blobs/uploads/不95306FA-FAD3-4E36-8D41-CF1C93EF8286",
@@ -212,26 +212,26 @@ func TestRouterWithBadCharacters(t *testing.T) {
 				StatusCode: http.StatusNotFound,
 			},
 		}
-		checkTestRouter(t, testCases, "", true)
+		checkTestRouter(t, tests, "", true)
 	} else {
 		// in the long version we're going to fuzz the router
 		// with random UTF8 characters not in the 128 bit ASCII range.
 		// These are not valid characters for the router and we expect
 		// 404s on every test.
 		rand.Seed(time.Now().UTC().UnixNano())
-		testCases := make([]routeTestCase, 1000)
-		for idx := range testCases {
-			testCases[idx] = routeTestCase{
+		tests := make([]routeTestCase, 1000)
+		for idx := range tests {
+			tests[idx] = routeTestCase{
 				RouteName:  RouteNameTags,
 				RequestURI: fmt.Sprintf("/v2/%v/%v/tags/list", randomString(10), randomString(10)),
 				StatusCode: http.StatusNotFound,
 			}
 		}
-		checkTestRouter(t, testCases, "", true)
+		checkTestRouter(t, tests, "", true)
 	}
 }
 
-func checkTestRouter(t *testing.T, testCases []routeTestCase, prefix string, deeplyEqual bool) {
+func checkTestRouter(t *testing.T, tests []routeTestCase, prefix string, deeplyEqual bool) {
 	router := RouterWithPrefix(prefix)
 
 	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -252,37 +252,37 @@ func checkTestRouter(t *testing.T, testCases []routeTestCase, prefix string, dee
 	// Startup test server
 	server := httptest.NewServer(router)
 
-	for _, testcase := range testCases {
-		testcase.RequestURI = strings.TrimSuffix(prefix, "/") + testcase.RequestURI
+	for _, tc := range tests {
+		tc.RequestURI = strings.TrimSuffix(prefix, "/") + tc.RequestURI
 		// Register the endpoint
-		route := router.GetRoute(testcase.RouteName)
+		route := router.GetRoute(tc.RouteName)
 		if route == nil {
-			t.Fatalf("route for name %q not found", testcase.RouteName)
+			t.Fatalf("route for name %q not found", tc.RouteName)
 		}
 
 		route.Handler(testHandler)
 
-		u := server.URL + testcase.RequestURI
+		u := server.URL + tc.RequestURI
 
 		resp, err := http.Get(u)
 		if err != nil {
 			t.Fatalf("error issuing get request: %v", err)
 		}
 
-		if testcase.StatusCode == 0 {
+		if tc.StatusCode == 0 {
 			// Override default, zero-value
-			testcase.StatusCode = http.StatusOK
+			tc.StatusCode = http.StatusOK
 		}
-		if testcase.ExpectedURI == "" {
+		if tc.ExpectedURI == "" {
 			// Override default, zero-value
-			testcase.ExpectedURI = testcase.RequestURI
+			tc.ExpectedURI = tc.RequestURI
 		}
 
-		if resp.StatusCode != testcase.StatusCode {
+		if resp.StatusCode != tc.StatusCode {
 			t.Fatalf("unexpected status for %s: %v %v", u, resp.Status, resp.StatusCode)
 		}
 
-		if testcase.StatusCode != http.StatusOK {
+		if tc.StatusCode != http.StatusOK {
 			resp.Body.Close()
 			// We don't care about json response.
 			continue
@@ -297,20 +297,20 @@ func checkTestRouter(t *testing.T, testCases []routeTestCase, prefix string, dee
 		// Needs to be set out of band
 		actualRouteInfo.StatusCode = resp.StatusCode
 
-		if actualRouteInfo.RequestURI != testcase.ExpectedURI {
-			t.Fatalf("URI %v incorrectly parsed, expected %v", actualRouteInfo.RequestURI, testcase.ExpectedURI)
+		if actualRouteInfo.RequestURI != tc.ExpectedURI {
+			t.Fatalf("URI %v incorrectly parsed, expected %v", actualRouteInfo.RequestURI, tc.ExpectedURI)
 		}
 
-		if actualRouteInfo.RouteName != testcase.RouteName {
-			t.Fatalf("incorrect route %q matched, expected %q", actualRouteInfo.RouteName, testcase.RouteName)
+		if actualRouteInfo.RouteName != tc.RouteName {
+			t.Fatalf("incorrect route %q matched, expected %q", actualRouteInfo.RouteName, tc.RouteName)
 		}
 
 		// when testing deep equality, the actualRouteInfo has an empty ExpectedURI, we don't want
 		// that to make the comparison fail. We're otherwise done with the testcase so empty the
 		// testcase.ExpectedURI
-		testcase.ExpectedURI = ""
-		if deeplyEqual && !reflect.DeepEqual(actualRouteInfo, testcase) {
-			t.Fatalf("actual does not equal expected: %#v != %#v", actualRouteInfo, testcase)
+		tc.ExpectedURI = ""
+		if deeplyEqual && !reflect.DeepEqual(actualRouteInfo, tc) {
+			t.Fatalf("actual does not equal expected: %#v != %#v", actualRouteInfo, tc)
 		}
 
 		resp.Body.Close()
diff --git a/registry/api/v2/urls_test.go b/registry/api/v2/urls_test.go
index 66fb4fd04..0ccf35182 100644
--- a/registry/api/v2/urls_test.go
+++ b/registry/api/v2/urls_test.go
@@ -138,23 +138,23 @@ func TestURLBuilder(t *testing.T) {
 				t.Fatalf("unexpected error creating urlbuilder: %v", err)
 			}
 
-			for _, testCase := range makeURLBuilderTestCases(urlBuilder) {
-				url, err := testCase.build()
-				expectedErr := testCase.expectedErr
+			for _, tc := range makeURLBuilderTestCases(urlBuilder) {
+				buildURL, err := tc.build()
+				expectedErr := tc.expectedErr
 				if !reflect.DeepEqual(expectedErr, err) {
-					t.Fatalf("%s: Expecting %v but got error %v", testCase.description, expectedErr, err)
+					t.Fatalf("%s: Expecting %v but got error %v", tc.description, expectedErr, err)
 				}
 				if expectedErr != nil {
 					continue
 				}
 
-				expectedURL := testCase.expectedPath
+				expectedURL := tc.expectedPath
 				if !relative {
 					expectedURL = root + expectedURL
 				}
 
-				if url != expectedURL {
-					t.Fatalf("%s: %q != %q", testCase.description, url, expectedURL)
+				if buildURL != expectedURL {
+					t.Fatalf("%s: %q != %q", tc.description, buildURL, expectedURL)
 				}
 			}
 		}
@@ -178,22 +178,22 @@ func TestURLBuilderWithPrefix(t *testing.T) {
 				t.Fatalf("unexpected error creating urlbuilder: %v", err)
 			}
 
-			for _, testCase := range makeURLBuilderTestCases(urlBuilder) {
-				url, err := testCase.build()
-				expectedErr := testCase.expectedErr
+			for _, tc := range makeURLBuilderTestCases(urlBuilder) {
+				buildURL, err := tc.build()
+				expectedErr := tc.expectedErr
 				if !reflect.DeepEqual(expectedErr, err) {
-					t.Fatalf("%s: Expecting %v but got error %v", testCase.description, expectedErr, err)
+					t.Fatalf("%s: Expecting %v but got error %v", tc.description, expectedErr, err)
 				}
 				if expectedErr != nil {
 					continue
 				}
 
-				expectedURL := testCase.expectedPath
+				expectedURL := tc.expectedPath
 				if !relative {
 					expectedURL = root[0:len(root)-1] + expectedURL
 				}
-				if url != expectedURL {
-					t.Fatalf("%s: %q != %q", testCase.description, url, expectedURL)
+				if buildURL != expectedURL {
+					t.Fatalf("%s: %q != %q", tc.description, buildURL, expectedURL)
 				}
 			}
 		}
@@ -424,23 +424,23 @@ func TestBuilderFromRequest(t *testing.T) {
 				builder = NewURLBuilderFromRequest(tr.request, relative)
 			}
 
-			for _, testCase := range makeURLBuilderTestCases(builder) {
-				buildURL, err := testCase.build()
-				expectedErr := testCase.expectedErr
+			for _, tc := range makeURLBuilderTestCases(builder) {
+				buildURL, err := tc.build()
+				expectedErr := tc.expectedErr
 				if !reflect.DeepEqual(expectedErr, err) {
-					t.Fatalf("%s: Expecting %v but got error %v", testCase.description, expectedErr, err)
+					t.Fatalf("%s: Expecting %v but got error %v", tc.description, expectedErr, err)
 				}
 				if expectedErr != nil {
 					continue
 				}
 
-				expectedURL := testCase.expectedPath
+				expectedURL := tc.expectedPath
 				if !relative {
 					expectedURL = tr.base + expectedURL
 				}
 
 				if buildURL != expectedURL {
-					t.Errorf("[relative=%t, request=%q, case=%q]: %q != %q", relative, tr.name, testCase.description, buildURL, expectedURL)
+					t.Errorf("[relative=%t, request=%q, case=%q]: %q != %q", relative, tr.name, tc.description, buildURL, expectedURL)
 				}
 			}
 		}
@@ -497,11 +497,11 @@ func TestBuilderFromRequestWithPrefix(t *testing.T) {
 			builder = NewURLBuilderFromRequest(tr.request, false)
 		}
 
-		for _, testCase := range makeURLBuilderTestCases(builder) {
-			buildURL, err := testCase.build()
-			expectedErr := testCase.expectedErr
+		for _, tc := range makeURLBuilderTestCases(builder) {
+			buildURL, err := tc.build()
+			expectedErr := tc.expectedErr
 			if !reflect.DeepEqual(expectedErr, err) {
-				t.Fatalf("%s: Expecting %v but got error %v", testCase.description, expectedErr, err)
+				t.Fatalf("%s: Expecting %v but got error %v", tc.description, expectedErr, err)
 			}
 			if expectedErr != nil {
 				continue
@@ -510,7 +510,7 @@ func TestBuilderFromRequestWithPrefix(t *testing.T) {
 			var expectedURL string
 			proto, ok := tr.request.Header["X-Forwarded-Proto"]
 			if !ok {
-				expectedURL = testCase.expectedPath
+				expectedURL = tc.expectedPath
 				if !relative {
 					expectedURL = tr.base[0:len(tr.base)-1] + expectedURL
 				}
@@ -520,7 +520,7 @@ func TestBuilderFromRequestWithPrefix(t *testing.T) {
 					t.Fatal(err)
 				}
 				urlBase.Scheme = proto[0]
-				expectedURL = testCase.expectedPath
+				expectedURL = tc.expectedPath
 				if !relative {
 					expectedURL = urlBase.String()[0:len(urlBase.String())-1] + expectedURL
 				}
@@ -528,7 +528,7 @@ func TestBuilderFromRequestWithPrefix(t *testing.T) {
 			}
 
 			if buildURL != expectedURL {
-				t.Fatalf("%s: %q != %q", testCase.description, buildURL, expectedURL)
+				t.Fatalf("%s: %q != %q", tc.description, buildURL, expectedURL)
 			}
 		}
 	}

From f4acd98865ec9efd23581ddd3f365ca8cd7d8411 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:38:30 +0200
Subject: [PATCH 13/16] registry/api/v2: checkTestRouter(): use sub-tests,
 t.Parallel()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 registry/api/v2/routes_test.go | 116 ++++++++++++++++++---------------
 1 file changed, 62 insertions(+), 54 deletions(-)

diff --git a/registry/api/v2/routes_test.go b/registry/api/v2/routes_test.go
index efea869c0..bdd0ef48c 100644
--- a/registry/api/v2/routes_test.go
+++ b/registry/api/v2/routes_test.go
@@ -29,6 +29,7 @@ type routeTestCase struct {
 //
 // This may go away as the application structure comes together.
 func TestRouter(t *testing.T) {
+	t.Parallel()
 	tests := []routeTestCase{
 		{
 			RouteName:  RouteNameBase,
@@ -177,6 +178,7 @@ func TestRouter(t *testing.T) {
 }
 
 func TestRouterWithPathTraversals(t *testing.T) {
+	t.Parallel()
 	tests := []routeTestCase{
 		{
 			RouteName:   RouteNameBlobUploadChunk,
@@ -198,6 +200,7 @@ func TestRouterWithPathTraversals(t *testing.T) {
 }
 
 func TestRouterWithBadCharacters(t *testing.T) {
+	t.Parallel()
 	if testing.Short() {
 		tests := []routeTestCase{
 			{
@@ -253,67 +256,72 @@ func checkTestRouter(t *testing.T, tests []routeTestCase, prefix string, deeplyE
 	server := httptest.NewServer(router)
 
 	for _, tc := range tests {
-		tc.RequestURI = strings.TrimSuffix(prefix, "/") + tc.RequestURI
-		// Register the endpoint
-		route := router.GetRoute(tc.RouteName)
-		if route == nil {
-			t.Fatalf("route for name %q not found", tc.RouteName)
-		}
+		tc := tc
+		requestURI := strings.TrimSuffix(prefix, "/") + tc.RequestURI
+		t.Run("("+tc.RouteName+")"+requestURI, func(t *testing.T) {
+			t.Parallel()
+			tc.RequestURI = requestURI
+			// Register the endpoint
+			route := router.GetRoute(tc.RouteName)
+			if route == nil {
+				t.Fatalf("route for name %q not found", tc.RouteName)
+			}
 
-		route.Handler(testHandler)
+			route.Handler(testHandler)
 
-		u := server.URL + tc.RequestURI
+			u := server.URL + tc.RequestURI
 
-		resp, err := http.Get(u)
-		if err != nil {
-			t.Fatalf("error issuing get request: %v", err)
-		}
+			resp, err := http.Get(u)
+			if err != nil {
+				t.Fatalf("error issuing get request: %v", err)
+			}
 
-		if tc.StatusCode == 0 {
-			// Override default, zero-value
-			tc.StatusCode = http.StatusOK
-		}
-		if tc.ExpectedURI == "" {
-			// Override default, zero-value
-			tc.ExpectedURI = tc.RequestURI
-		}
+			if tc.StatusCode == 0 {
+				// Override default, zero-value
+				tc.StatusCode = http.StatusOK
+			}
+			if tc.ExpectedURI == "" {
+				// Override default, zero-value
+				tc.ExpectedURI = tc.RequestURI
+			}
 
-		if resp.StatusCode != tc.StatusCode {
-			t.Fatalf("unexpected status for %s: %v %v", u, resp.Status, resp.StatusCode)
-		}
+			if resp.StatusCode != tc.StatusCode {
+				t.Fatalf("unexpected status for %s: %v %v", u, resp.Status, resp.StatusCode)
+			}
+
+			if tc.StatusCode != http.StatusOK {
+				resp.Body.Close()
+				// We don't care about json response.
+				return
+			}
+
+			dec := json.NewDecoder(resp.Body)
+
+			var actualRouteInfo routeTestCase
+			if err := dec.Decode(&actualRouteInfo); err != nil {
+				t.Fatalf("error reading json response: %v", err)
+			}
+			// Needs to be set out of band
+			actualRouteInfo.StatusCode = resp.StatusCode
+
+			if actualRouteInfo.RequestURI != tc.ExpectedURI {
+				t.Fatalf("URI %v incorrectly parsed, expected %v", actualRouteInfo.RequestURI, tc.ExpectedURI)
+			}
+
+			if actualRouteInfo.RouteName != tc.RouteName {
+				t.Fatalf("incorrect route %q matched, expected %q", actualRouteInfo.RouteName, tc.RouteName)
+			}
+
+			// when testing deep equality, the actualRouteInfo has an empty ExpectedURI, we don't want
+			// that to make the comparison fail. We're otherwise done with the testcase so empty the
+			// testcase.ExpectedURI
+			tc.ExpectedURI = ""
+			if deeplyEqual && !reflect.DeepEqual(actualRouteInfo, tc) {
+				t.Fatalf("actual does not equal expected: %#v != %#v", actualRouteInfo, tc)
+			}
 
-		if tc.StatusCode != http.StatusOK {
 			resp.Body.Close()
-			// We don't care about json response.
-			continue
-		}
-
-		dec := json.NewDecoder(resp.Body)
-
-		var actualRouteInfo routeTestCase
-		if err := dec.Decode(&actualRouteInfo); err != nil {
-			t.Fatalf("error reading json response: %v", err)
-		}
-		// Needs to be set out of band
-		actualRouteInfo.StatusCode = resp.StatusCode
-
-		if actualRouteInfo.RequestURI != tc.ExpectedURI {
-			t.Fatalf("URI %v incorrectly parsed, expected %v", actualRouteInfo.RequestURI, tc.ExpectedURI)
-		}
-
-		if actualRouteInfo.RouteName != tc.RouteName {
-			t.Fatalf("incorrect route %q matched, expected %q", actualRouteInfo.RouteName, tc.RouteName)
-		}
-
-		// when testing deep equality, the actualRouteInfo has an empty ExpectedURI, we don't want
-		// that to make the comparison fail. We're otherwise done with the testcase so empty the
-		// testcase.ExpectedURI
-		tc.ExpectedURI = ""
-		if deeplyEqual && !reflect.DeepEqual(actualRouteInfo, tc) {
-			t.Fatalf("actual does not equal expected: %#v != %#v", actualRouteInfo, tc)
-		}
-
-		resp.Body.Close()
+		})
 	}
 }
 

From 85028a801b54cb8b432130e13605aa962bea53db Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:21:48 +0200
Subject: [PATCH 14/16] registry/handlers: use consistent names for test-tables

Also marked assertBlobUploadStateEquals as t.Helper()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 registry/handlers/hmac_test.go | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/registry/handlers/hmac_test.go b/registry/handlers/hmac_test.go
index 366c7279e..ce9af25d3 100644
--- a/registry/handlers/hmac_test.go
+++ b/registry/handlers/hmac_test.go
@@ -45,8 +45,8 @@ var secrets = []string{
 func TestLayerUploadTokens(t *testing.T) {
 	secret := hmacKey("supersecret")
 
-	for _, testcase := range blobUploadStates {
-		token, err := secret.packUploadState(testcase)
+	for _, tc := range blobUploadStates {
+		token, err := secret.packUploadState(tc)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -56,7 +56,7 @@ func TestLayerUploadTokens(t *testing.T) {
 			t.Fatal(err)
 		}
 
-		assertBlobUploadStateEquals(t, testcase, lus)
+		assertBlobUploadStateEquals(t, tc, lus)
 	}
 }
 
@@ -68,8 +68,8 @@ func TestHMACValidation(t *testing.T) {
 		secret2 := hmacKey(secret)
 		badSecret := hmacKey("DifferentSecret")
 
-		for _, testcase := range blobUploadStates {
-			token, err := secret1.packUploadState(testcase)
+		for _, tc := range blobUploadStates {
+			token, err := secret1.packUploadState(tc)
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -79,7 +79,7 @@ func TestHMACValidation(t *testing.T) {
 				t.Fatal(err)
 			}
 
-			assertBlobUploadStateEquals(t, testcase, lus)
+			assertBlobUploadStateEquals(t, tc, lus)
 
 			_, err = badSecret.unpackUploadState(token)
 			if err == nil {
@@ -105,6 +105,7 @@ func TestHMACValidation(t *testing.T) {
 }
 
 func assertBlobUploadStateEquals(t *testing.T, expected blobUploadState, received blobUploadState) {
+	t.Helper()
 	if expected.Name != received.Name {
 		t.Fatalf("Expected Name=%q, Received Name=%q", expected.Name, received.Name)
 	}

From 5301ae14bf344c60909825568808380e21c92adb Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:27:42 +0200
Subject: [PATCH 15/16] cloudfront: rename vars that collided with type

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 .../middleware/cloudfront/s3filter_test.go    | 25 +++++++++----------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/registry/storage/driver/middleware/cloudfront/s3filter_test.go b/registry/storage/driver/middleware/cloudfront/s3filter_test.go
index 3b0331b79..f38af4904 100644
--- a/registry/storage/driver/middleware/cloudfront/s3filter_test.go
+++ b/registry/storage/driver/middleware/cloudfront/s3filter_test.go
@@ -8,12 +8,11 @@ import (
 	"net"
 	"net/http"
 	"net/http/httptest"
+	"reflect" // used as a replacement for testify
 	"testing"
 	"time"
 
 	dcontext "github.com/distribution/distribution/v3/context"
-
-	"reflect" // used as a replacement for testify
 )
 
 // Rather than pull in all of testify
@@ -262,7 +261,7 @@ func TestUpdateCalledRegularly(t *testing.T) {
 }
 
 func TestEligibleForS3(t *testing.T) {
-	awsIPs := &awsIPs{
+	ips := &awsIPs{
 		ipv4: []net.IPNet{{
 			IP:   net.ParseIP("192.168.1.1"),
 			Mask: net.IPv4Mask(255, 255, 255, 0),
@@ -291,13 +290,13 @@ func TestEligibleForS3(t *testing.T) {
 		name := fmt.Sprintf("Client IP = %v",
 			testCase.Context.Value("http.request.ip"))
 		t.Run(name, func(t *testing.T) {
-			assertEqual(t, testCase.Expected, eligibleForS3(testCase.Context, awsIPs))
+			assertEqual(t, testCase.Expected, eligibleForS3(testCase.Context, ips))
 		})
 	}
 }
 
 func TestEligibleForS3WithAWSIPNotInitialized(t *testing.T) {
-	awsIPs := &awsIPs{
+	ips := &awsIPs{
 		ipv4: []net.IPNet{{
 			IP:   net.ParseIP("192.168.1.1"),
 			Mask: net.IPv4Mask(255, 255, 255, 0),
@@ -326,7 +325,7 @@ func TestEligibleForS3WithAWSIPNotInitialized(t *testing.T) {
 		name := fmt.Sprintf("Client IP = %v",
 			testCase.Context.Value("http.request.ip"))
 		t.Run(name, func(t *testing.T) {
-			assertEqual(t, testCase.Expected, eligibleForS3(testCase.Context, awsIPs))
+			assertEqual(t, testCase.Expected, eligibleForS3(testCase.Context, ips))
 		})
 	}
 }
@@ -364,8 +363,8 @@ func BenchmarkContainsRandom(b *testing.B) {
 	numNetworksPerType := 1000 // keep in sync with the above
 	// intentionally skip constructor when creating awsIPs, to avoid updater routine.
 	// This benchmark is only concerned with contains() performance.
-	awsIPs := awsIPs{}
-	populateRandomNetworks(b, &awsIPs, numNetworksPerType, numNetworksPerType)
+	ips := awsIPs{}
+	populateRandomNetworks(b, &ips, numNetworksPerType, numNetworksPerType)
 
 	ipv4 := make([][]byte, b.N)
 	ipv6 := make([][]byte, b.N)
@@ -377,13 +376,13 @@ func BenchmarkContainsRandom(b *testing.B) {
 	}
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		awsIPs.contains(ipv4[i])
-		awsIPs.contains(ipv6[i])
+		ips.contains(ipv4[i])
+		ips.contains(ipv6[i])
 	}
 }
 
 func BenchmarkContainsProd(b *testing.B) {
-	awsIPs := newAWSIPs(defaultIPRangesURL, defaultUpdateFrequency, nil)
+	ips := newAWSIPs(defaultIPRangesURL, defaultUpdateFrequency, nil)
 	ipv4 := make([][]byte, b.N)
 	ipv6 := make([][]byte, b.N)
 	for i := 0; i < b.N; i++ {
@@ -394,7 +393,7 @@ func BenchmarkContainsProd(b *testing.B) {
 	}
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		awsIPs.contains(ipv4[i])
-		awsIPs.contains(ipv6[i])
+		ips.contains(ipv4[i])
+		ips.contains(ipv6[i])
 	}
 }

From f03d966ef7a9c2620af5a42b0c11e3bdafa2d421 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 30 Apr 2023 15:30:32 +0200
Subject: [PATCH 16/16] cloudfront: use consistent names for test-tables,
 t.Parallel()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 .../middleware/cloudfront/s3filter_test.go    | 26 ++++++++++---------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/registry/storage/driver/middleware/cloudfront/s3filter_test.go b/registry/storage/driver/middleware/cloudfront/s3filter_test.go
index f38af4904..81ef6aa8a 100644
--- a/registry/storage/driver/middleware/cloudfront/s3filter_test.go
+++ b/registry/storage/driver/middleware/cloudfront/s3filter_test.go
@@ -261,6 +261,7 @@ func TestUpdateCalledRegularly(t *testing.T) {
 }
 
 func TestEligibleForS3(t *testing.T) {
+	t.Parallel()
 	ips := &awsIPs{
 		ipv4: []net.IPNet{{
 			IP:   net.ParseIP("192.168.1.1"),
@@ -277,7 +278,7 @@ func TestEligibleForS3(t *testing.T) {
 		return dcontext.WithRequest(empty, req)
 	}
 
-	cases := []struct {
+	tests := []struct {
 		Context  context.Context
 		Expected bool
 	}{
@@ -286,16 +287,17 @@ func TestEligibleForS3(t *testing.T) {
 		{Context: makeContext("192.168.0.2"), Expected: false},
 	}
 
-	for _, testCase := range cases {
-		name := fmt.Sprintf("Client IP = %v",
-			testCase.Context.Value("http.request.ip"))
-		t.Run(name, func(t *testing.T) {
-			assertEqual(t, testCase.Expected, eligibleForS3(testCase.Context, ips))
+	for _, tc := range tests {
+		tc := tc
+		t.Run(fmt.Sprintf("Client IP = %v", tc.Context.Value("http.request.ip")), func(t *testing.T) {
+			t.Parallel()
+			assertEqual(t, tc.Expected, eligibleForS3(tc.Context, ips))
 		})
 	}
 }
 
 func TestEligibleForS3WithAWSIPNotInitialized(t *testing.T) {
+	t.Parallel()
 	ips := &awsIPs{
 		ipv4: []net.IPNet{{
 			IP:   net.ParseIP("192.168.1.1"),
@@ -312,7 +314,7 @@ func TestEligibleForS3WithAWSIPNotInitialized(t *testing.T) {
 		return dcontext.WithRequest(empty, req)
 	}
 
-	cases := []struct {
+	tests := []struct {
 		Context  context.Context
 		Expected bool
 	}{
@@ -321,11 +323,11 @@ func TestEligibleForS3WithAWSIPNotInitialized(t *testing.T) {
 		{Context: makeContext("192.168.0.2"), Expected: false},
 	}
 
-	for _, testCase := range cases {
-		name := fmt.Sprintf("Client IP = %v",
-			testCase.Context.Value("http.request.ip"))
-		t.Run(name, func(t *testing.T) {
-			assertEqual(t, testCase.Expected, eligibleForS3(testCase.Context, ips))
+	for _, tc := range tests {
+		tc := tc
+		t.Run(fmt.Sprintf("Client IP = %v", tc.Context.Value("http.request.ip")), func(t *testing.T) {
+			t.Parallel()
+			assertEqual(t, tc.Expected, eligibleForS3(tc.Context, ips))
 		})
 	}
 }