diff options
Diffstat (limited to 'pkg/gitdiff/format_roundtrip_test.go')
| -rw-r--r-- | pkg/gitdiff/format_roundtrip_test.go | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/pkg/gitdiff/format_roundtrip_test.go b/pkg/gitdiff/format_roundtrip_test.go deleted file mode 100644 index a230e91..0000000 --- a/pkg/gitdiff/format_roundtrip_test.go +++ /dev/null @@ -1,157 +0,0 @@ -package gitdiff - -import ( - "bytes" - "fmt" - "os" - "path/filepath" - "slices" - "testing" -) - -func TestFormatRoundtrip(t *testing.T) { - patches := []struct { - File string - SkipTextCompare bool - }{ - {File: "copy.patch"}, - {File: "copy_modify.patch"}, - {File: "delete.patch"}, - {File: "mode.patch"}, - {File: "mode_modify.patch"}, - {File: "modify.patch"}, - {File: "new.patch"}, - {File: "new_empty.patch"}, - {File: "new_mode.patch"}, - {File: "rename.patch"}, - {File: "rename_modify.patch"}, - - // Due to differences between Go's 'encoding/zlib' package and the zlib - // C library, binary patches cannot be compared directly as the patch - // data is slightly different when re-encoded by Go. - {File: "binary_modify.patch", SkipTextCompare: true}, - {File: "binary_new.patch", SkipTextCompare: true}, - {File: "binary_modify_nodata.patch"}, - } - - for _, patch := range patches { - t.Run(patch.File, func(t *testing.T) { - b, err := os.ReadFile(filepath.Join("testdata", "string", patch.File)) - if err != nil { - t.Fatalf("failed to read patch: %v", err) - } - - original := assertParseSingleFile(t, b, "patch") - str := original.String() - - if !patch.SkipTextCompare { - if string(b) != str { - t.Errorf("incorrect patch text\nexpected: %q\n actual: %q\n", string(b), str) - } - } - - reparsed := assertParseSingleFile(t, []byte(str), "formatted patch") - assertFilesEqual(t, original, reparsed) - }) - } -} - -func assertParseSingleFile(t *testing.T, b []byte, kind string) *File { - files, _, err := Parse(bytes.NewReader(b)) - if err != nil { - t.Fatalf("failed to parse %s: %v", kind, err) - } - if len(files) != 1 { - t.Fatalf("expected %s to contain a single files, but found %d", kind, len(files)) - } - return files[0] -} - -func assertFilesEqual(t *testing.T, expected, actual *File) { - assertEqual(t, expected.OldName, actual.OldName, "OldName") - assertEqual(t, expected.NewName, actual.NewName, "NewName") - - assertEqual(t, expected.IsNew, actual.IsNew, "IsNew") - assertEqual(t, expected.IsDelete, actual.IsDelete, "IsDelete") - assertEqual(t, expected.IsCopy, actual.IsCopy, "IsCopy") - assertEqual(t, expected.IsRename, actual.IsRename, "IsRename") - - assertEqual(t, expected.OldMode, actual.OldMode, "OldMode") - assertEqual(t, expected.NewMode, actual.NewMode, "NewMode") - - assertEqual(t, expected.OldOIDPrefix, actual.OldOIDPrefix, "OldOIDPrefix") - assertEqual(t, expected.NewOIDPrefix, actual.NewOIDPrefix, "NewOIDPrefix") - assertEqual(t, expected.Score, actual.Score, "Score") - - if len(expected.TextFragments) == len(actual.TextFragments) { - for i := range expected.TextFragments { - prefix := fmt.Sprintf("TextFragments[%d].", i) - ef := expected.TextFragments[i] - af := actual.TextFragments[i] - - assertEqual(t, ef.Comment, af.Comment, prefix+"Comment") - - assertEqual(t, ef.OldPosition, af.OldPosition, prefix+"OldPosition") - assertEqual(t, ef.OldLines, af.OldLines, prefix+"OldLines") - - assertEqual(t, ef.NewPosition, af.NewPosition, prefix+"NewPosition") - assertEqual(t, ef.NewLines, af.NewLines, prefix+"NewLines") - - assertEqual(t, ef.LinesAdded, af.LinesAdded, prefix+"LinesAdded") - assertEqual(t, ef.LinesDeleted, af.LinesDeleted, prefix+"LinesDeleted") - - assertEqual(t, ef.LeadingContext, af.LeadingContext, prefix+"LeadingContext") - assertEqual(t, ef.TrailingContext, af.TrailingContext, prefix+"TrailingContext") - - if !slices.Equal(ef.Lines, af.Lines) { - t.Errorf("%sLines: expected %#v, actual %#v", prefix, ef.Lines, af.Lines) - } - } - } else { - t.Errorf("TextFragments: expected length %d, actual length %d", len(expected.TextFragments), len(actual.TextFragments)) - } - - assertEqual(t, expected.IsBinary, actual.IsBinary, "IsBinary") - - if expected.BinaryFragment != nil { - if actual.BinaryFragment == nil { - t.Errorf("BinaryFragment: expected non-nil, actual is nil") - } else { - ef := expected.BinaryFragment - af := expected.BinaryFragment - - assertEqual(t, ef.Method, af.Method, "BinaryFragment.Method") - assertEqual(t, ef.Size, af.Size, "BinaryFragment.Size") - - if !slices.Equal(ef.Data, af.Data) { - t.Errorf("BinaryFragment.Data: expected %#v, actual %#v", ef.Data, af.Data) - } - } - } else if actual.BinaryFragment != nil { - t.Errorf("BinaryFragment: expected nil, actual is non-nil") - } - - if expected.ReverseBinaryFragment != nil { - if actual.ReverseBinaryFragment == nil { - t.Errorf("ReverseBinaryFragment: expected non-nil, actual is nil") - } else { - ef := expected.ReverseBinaryFragment - af := expected.ReverseBinaryFragment - - assertEqual(t, ef.Method, af.Method, "ReverseBinaryFragment.Method") - assertEqual(t, ef.Size, af.Size, "ReverseBinaryFragment.Size") - - if !slices.Equal(ef.Data, af.Data) { - t.Errorf("ReverseBinaryFragment.Data: expected %#v, actual %#v", ef.Data, af.Data) - } - } - } else if actual.ReverseBinaryFragment != nil { - t.Errorf("ReverseBinaryFragment: expected nil, actual is non-nil") - } -} - -func assertEqual[T comparable](t *testing.T, expected, actual T, name string) { - if expected != actual { - t.Errorf("%s: expected %#v, actual %#v", name, expected, actual) - } -} |