package reference import ( "encoding/json" "strconv" "strings" "testing" "github.com/docker/distribution/digest" ) func TestReferenceParse(t *testing.T) { // referenceTestcases is a unified set of testcases for // testing the parsing of references referenceTestcases := []struct { // input is the repository name or name component testcase input string // err is the error expected from Parse, or nil err error // repository is the string representation for the reference repository string // hostname is the hostname expected in the reference hostname string // tag is the tag for the reference tag string // digest is the digest for the reference (enforces digest reference) digest string }{ { input: "test_com", repository: "test_com", }, { input: "test.com:tag", repository: "test.com", tag: "tag", }, { input: "test.com:5000", repository: "test.com", tag: "5000", }, { input: "test.com/repo:tag", hostname: "test.com", repository: "test.com/repo", tag: "tag", }, { input: "test:5000/repo", hostname: "test:5000", repository: "test:5000/repo", }, { input: "test:5000/repo:tag", hostname: "test:5000", repository: "test:5000/repo", tag: "tag", }, { input: "test:5000/repo@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", hostname: "test:5000", repository: "test:5000/repo", digest: "sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", }, { input: "test:5000/repo:tag@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", hostname: "test:5000", repository: "test:5000/repo", tag: "tag", digest: "sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", }, { input: "test:5000/repo", hostname: "test:5000", repository: "test:5000/repo", }, { input: "", err: ErrNameEmpty, }, { input: ":justtag", err: ErrReferenceInvalidFormat, }, { input: "@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", err: ErrReferenceInvalidFormat, }, { input: "validname@invaliddigest:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", err: digest.ErrDigestUnsupported, }, { input: strings.Repeat("a/", 128) + "a:tag", err: ErrNameTooLong, }, { input: strings.Repeat("a/", 127) + "a:tag-puts-this-over-max", hostname: "a", repository: strings.Repeat("a/", 127) + "a", tag: "tag-puts-this-over-max", }, { input: "aa/asdf$$^/aa", err: ErrReferenceInvalidFormat, }, { input: "sub-dom1.foo.com/bar/baz/quux", hostname: "sub-dom1.foo.com", repository: "sub-dom1.foo.com/bar/baz/quux", }, { input: "sub-dom1.foo.com/bar/baz/quux:some-long-tag", hostname: "sub-dom1.foo.com", repository: "sub-dom1.foo.com/bar/baz/quux", tag: "some-long-tag", }, { input: "b.gcr.io/test.example.com/my-app:test.example.com", hostname: "b.gcr.io", repository: "b.gcr.io/test.example.com/my-app", tag: "test.example.com", }, { input: "xn--n3h.com/myimage:xn--n3h.com", // ☃.com in punycode hostname: "xn--n3h.com", repository: "xn--n3h.com/myimage", tag: "xn--n3h.com", }, { input: "xn--7o8h.com/myimage:xn--7o8h.com@sha512:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", // 🐳.com in punycode hostname: "xn--7o8h.com", repository: "xn--7o8h.com/myimage", tag: "xn--7o8h.com", digest: "sha512:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", }, { input: "foo_bar.com:8080", repository: "foo_bar.com", tag: "8080", }, { input: "foo/foo_bar.com:8080", hostname: "foo", repository: "foo/foo_bar.com", tag: "8080", }, } for _, testcase := range referenceTestcases { failf := func(format string, v ...interface{}) { t.Logf(strconv.Quote(testcase.input)+": "+format, v...) t.Fail() } repo, err := Parse(testcase.input) if testcase.err != nil { if err == nil { failf("missing expected error: %v", testcase.err) } else if testcase.err != err { failf("mismatched error: got %v, expected %v", err, testcase.err) } continue } else if err != nil { failf("unexpected parse error: %v", err) continue } if repo.String() != testcase.input { failf("mismatched repo: got %q, expected %q", repo.String(), testcase.input) } if named, ok := repo.(Named); ok { if named.Name() != testcase.repository { failf("unexpected repository: got %q, expected %q", named.Name(), testcase.repository) } hostname, _ := SplitHostname(named) if hostname != testcase.hostname { failf("unexpected hostname: got %q, expected %q", hostname, testcase.hostname) } } else if testcase.repository != "" || testcase.hostname != "" { failf("expected named type, got %T", repo) } tagged, ok := repo.(Tagged) if testcase.tag != "" { if ok { if tagged.Tag() != testcase.tag { failf("unexpected tag: got %q, expected %q", tagged.Tag(), testcase.tag) } } else { failf("expected tagged type, got %T", repo) } } else if ok { failf("unexpected tagged type") } digested, ok := repo.(Digested) if testcase.digest != "" { if ok { if digested.Digest().String() != testcase.digest { failf("unexpected digest: got %q, expected %q", digested.Digest().String(), testcase.digest) } } else { failf("expected digested type, got %T", repo) } } else if ok { failf("unexpected digested type") } } } // TestWithNameFailure tests cases where WithName should fail. Cases where it // should succeed are covered by TestSplitHostname, below. func TestWithNameFailure(t *testing.T) { testcases := []struct { input string err error }{ { input: "", err: ErrNameEmpty, }, { input: ":justtag", err: ErrReferenceInvalidFormat, }, { input: "@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", err: ErrReferenceInvalidFormat, }, { input: "validname@invaliddigest:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", err: ErrReferenceInvalidFormat, }, { input: strings.Repeat("a/", 128) + "a:tag", err: ErrNameTooLong, }, { input: "aa/asdf$$^/aa", err: ErrReferenceInvalidFormat, }, } for _, testcase := range testcases { failf := func(format string, v ...interface{}) { t.Logf(strconv.Quote(testcase.input)+": "+format, v...) t.Fail() } _, err := WithName(testcase.input) if err == nil { failf("no error parsing name. expected: %s", testcase.err) } } } func TestSplitHostname(t *testing.T) { testcases := []struct { input string hostname string name string }{ { input: "test.com/foo", hostname: "test.com", name: "foo", }, { input: "test_com/foo", hostname: "", name: "test_com/foo", }, { input: "test:8080/foo", hostname: "test:8080", name: "foo", }, { input: "test.com:8080/foo", hostname: "test.com:8080", name: "foo", }, { input: "test-com:8080/foo", hostname: "test-com:8080", name: "foo", }, { input: "xn--n3h.com:18080/foo", hostname: "xn--n3h.com:18080", name: "foo", }, } for _, testcase := range testcases { failf := func(format string, v ...interface{}) { t.Logf(strconv.Quote(testcase.input)+": "+format, v...) t.Fail() } named, err := WithName(testcase.input) if err != nil { failf("error parsing name: %s", err) } hostname, name := SplitHostname(named) if hostname != testcase.hostname { failf("unexpected hostname: got %q, expected %q", hostname, testcase.hostname) } if name != testcase.name { failf("unexpected name: got %q, expected %q", name, testcase.name) } } } type serializationType struct { Description string Field Field } func TestSerialization(t *testing.T) { testcases := []struct { description string input string name string tag string digest string err error }{ { description: "empty value", err: ErrNameEmpty, }, { description: "just a name", input: "example.com:8000/named", name: "example.com:8000/named", }, { description: "name with a tag", input: "example.com:8000/named:tagged", name: "example.com:8000/named", tag: "tagged", }, { description: "name with digest", input: "other.com/named@sha256:1234567890098765432112345667890098765", name: "other.com/named", digest: "sha256:1234567890098765432112345667890098765", }, } for _, testcase := range testcases { failf := func(format string, v ...interface{}) { t.Logf(strconv.Quote(testcase.input)+": "+format, v...) t.Fail() } m := map[string]string{ "Description": testcase.description, "Field": testcase.input, } b, err := json.Marshal(m) if err != nil { failf("error marshalling: %v", err) } t := serializationType{} if err := json.Unmarshal(b, &t); err != nil { if testcase.err == nil { failf("error unmarshalling: %v", err) } if err != testcase.err { failf("wrong error, expected %v, got %v", testcase.err, err) } continue } else if testcase.err != nil { failf("expected error unmarshalling: %v", testcase.err) } if t.Description != testcase.description { failf("wrong description, expected %q, got %q", testcase.description, t.Description) } ref := t.Field.Reference() if named, ok := ref.(Named); ok { if named.Name() != testcase.name { failf("unexpected repository: got %q, expected %q", named.Name(), testcase.name) } } else if testcase.name != "" { failf("expected named type, got %T", ref) } tagged, ok := ref.(Tagged) if testcase.tag != "" { if ok { if tagged.Tag() != testcase.tag { failf("unexpected tag: got %q, expected %q", tagged.Tag(), testcase.tag) } } else { failf("expected tagged type, got %T", ref) } } else if ok { failf("unexpected tagged type") } digested, ok := ref.(Digested) if testcase.digest != "" { if ok { if digested.Digest().String() != testcase.digest { failf("unexpected digest: got %q, expected %q", digested.Digest().String(), testcase.digest) } } else { failf("expected digested type, got %T", ref) } } else if ok { failf("unexpected digested type") } t = serializationType{ Description: testcase.description, Field: AsField(ref), } b2, err := json.Marshal(t) if err != nil { failf("error marshing serialization type: %v", err) } if string(b) != string(b2) { failf("unexpected serialized value: expected %q, got %q", string(b), string(b2)) } // Ensure t.Field is not implementing "Reference" directly, getting // around the Reference type system var fieldInterface interface{} = t.Field if _, ok := fieldInterface.(Reference); ok { failf("field should not implement Reference interface") } } } func TestWithTag(t *testing.T) { testcases := []struct { name string tag string combined string }{ { name: "test.com/foo", tag: "tag", combined: "test.com/foo:tag", }, { name: "foo", tag: "tag2", combined: "foo:tag2", }, { name: "test.com:8000/foo", tag: "tag4", combined: "test.com:8000/foo:tag4", }, { name: "test.com:8000/foo", tag: "TAG5", combined: "test.com:8000/foo:TAG5", }, } for _, testcase := range testcases { failf := func(format string, v ...interface{}) { t.Logf(strconv.Quote(testcase.name)+": "+format, v...) t.Fail() } named, err := WithName(testcase.name) if err != nil { failf("error parsing name: %s", err) } tagged, err := WithTag(named, testcase.tag) if err != nil { failf("WithTag failed: %s", err) } if tagged.String() != testcase.combined { failf("unexpected: got %q, expected %q", tagged.String(), testcase.combined) } } } func TestWithDigest(t *testing.T) { testcases := []struct { name string digest digest.Digest combined string }{ { name: "test.com/foo", digest: "sha256:1234567890098765432112345667890098765", combined: "test.com/foo@sha256:1234567890098765432112345667890098765", }, { name: "foo", digest: "sha256:1234567890098765432112345667890098765", combined: "foo@sha256:1234567890098765432112345667890098765", }, { name: "test.com:8000/foo", digest: "sha256:1234567890098765432112345667890098765", combined: "test.com:8000/foo@sha256:1234567890098765432112345667890098765", }, } for _, testcase := range testcases { failf := func(format string, v ...interface{}) { t.Logf(strconv.Quote(testcase.name)+": "+format, v...) t.Fail() } named, err := WithName(testcase.name) if err != nil { failf("error parsing name: %s", err) } digested, err := WithDigest(named, testcase.digest) if err != nil { failf("WithDigest failed: %s", err) } if digested.String() != testcase.combined { failf("unexpected: got %q, expected %q", digested.String(), testcase.combined) } } }