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
}
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))
}
}