func TestNewEqualList(t *testing.T) {
	// Different allocations should not be equal.
	if errors.Append(errors.New("ab"), errors.New("cd")) == errors.Append(errors.New("ab"), errors.New("cd")) {
		t.Errorf(`Append(New("ab"), New("cd")) == Append(New("ab"), New("cd"))`)
	}

	// Same allocation should be equal to itself (not crash).
	err := errors.Append(errors.New("jk"), errors.New("lm"))
	if err != err {
		t.Errorf(`err != err`)
	}
}
func BenchmarkWalkPanic(b *testing.B) {
	var list error
	for i := 1; i <= listLen; i++ {
		list = errors.Append(list, fmt.Errorf("number %v", i))
	}
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		func() {
			defer func() {
				if e := recover(); e != nil {
					panic(e)
				}
			}()
			n := attentionSpan
			i := 0
			errors.Walk(list, func(e error) {
				_ = e
				i++
				if i >= n {
					panic(nil)
				}
			})
		}()
	}
}
func TestErrorMethodList(t *testing.T) {
	err := errors.Append(errors.New("ab"), errors.New("cd"))
	if err.Error() != "ab"+"\n"+"cd" {
		t.Errorf(`Append(New("ab"), New("cd")) = %q, want %q`,
			err.Error(), "ab\ncd")
	}
}
func BenchmarkWalkN(b *testing.B) {
	var list error
	for i := 1; i <= listLen; i++ {
		list = errors.Append(list, fmt.Errorf("number %v", i))
	}
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		errors.WalkN(list, attentionSpan, func(e error) {
			_ = e
		})
	}
}
func brokenAppendWriteFile(filename string, data []byte) error {
	f, err := mockOS.Create(filename)
	if err != nil {
		return err
	}
	defer func() {
		err = errors.Append(err, f.Close())
	}()
	n, err := f.Write(data)
	if err == nil && n < len(data) {
		err = io.ErrShortWrite
	}
	return err
}
Exemple #6
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func ExampleWalkN() {
	var list error
	for i := 1; i <= 1000; i++ {
		list = errors.Append(list, fmt.Errorf("number %v", i))
	}
	errors.WalkN(list, 3, func(e error) {
		// In real code, this should generally use os.Stderr, but
		// https://code.google.com/p/go/issues/detail?id=4550
		// broke that for examples.
		fmt.Fprintln(os.Stdout, e)
	})
	// Output:
	// number 1
	// number 2
	// number 3
}
func BenchmarkWalkIgnore(b *testing.B) {
	var list error
	for i := 1; i <= listLen; i++ {
		list = errors.Append(list, fmt.Errorf("number %v", i))
	}
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		n := attentionSpan
		i := 0
		errors.Walk(list, func(e error) {
			i++
			if i > n {
				return
			}
			_ = e
		})
	}
}
func BenchmarkNil(b *testing.B) {
	var list error
	for i := 0; i < b.N; i++ {
		list = errors.Append(list, nil)
	}
}
func BenchmarkAppend(b *testing.B) {
	var list error
	for i := 0; i < b.N; i++ {
		list = errors.Append(list, fmt.Errorf("number %v", i))
	}
}