reference: TestParseAnyReference(): use sub-tests

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

reference/normalize_test.go

@@ -433,6 +433,9 @@ func TestParseAnyReference(t *testing.T) {
 	}
 
 	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.Reference, func(t *testing.T) {
+			t.Parallel()
 			var ref Reference
 			var err error
 			ref, err = ParseAnyReference(tc.Reference)
@@ -453,6 +456,7 @@ func TestParseAnyReference(t *testing.T) {
 			if !equalReference(ref, expected) {
 				t.Errorf("Unexpected reference %#v, expected %#v", ref, expected)
 			}
+		})
 	}
 }