Method run

pkg/gitdiff/apply_test.go:171–200

(t *testing.T, apply func(io.Writer, io.ReaderAt, *File) error)

}

func (at applyTest) run(t *testing.T, apply func(io.Writer, io.ReaderAt, *File) error) {
	src, patch, out := at.Files.Load(t)

	files, _, err := Parse(bytes.NewReader(patch))
	if err != nil {
		t.Fatalf("failed to parse patch file: %v", err)
	}
	if len(files) != 1 {
		t.Fatalf("patch should contain exactly one file, but it has %d", len(files))
	}

	var dst bytes.Buffer
	err = apply(&dst, bytes.NewReader(src), files[0])
	if at.Err != nil {
		assertError(t, at.Err, err, "applying fragment")
		return
	}
	if err != nil {
		var aerr *ApplyError
		if errors.As(err, &aerr) {
			t.Fatalf("unexpected error applying: at %d: fragment %d at %d: %v", aerr.Line, aerr.Fragment, aerr.FragmentLine, err)
		} else {
			t.Fatalf("unexpected error applying: %v", err)
		}
	}

	if !bytes.Equal(out, dst.Bytes()) {
		t.Errorf("incorrect result after apply\nexpected:\n%q\nactual:\n%q", out, dst.Bytes())
	}
}

type applyFiles struct {
	Src   string