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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "errors" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "go.uber.org/multierr" | ||
| ) | ||
|
|
||
| func TestFlatten(t *testing.T) { | ||
| e := []error{ | ||
| errors.New("0"), | ||
| errors.New("1"), | ||
| errors.New("2"), | ||
| errors.New("3"), | ||
| } | ||
|
|
||
| // nested errors | ||
| // [[[0, 1], 2], 3] | ||
| err0 := errors.Join(nil, e[0]) | ||
| err0 = errors.Join(err0, e[1]) | ||
| err0 = errors.Join(err0, e[2]) | ||
| err0 = errors.Join(err0, e[3]) | ||
|
|
||
| // flat error | ||
| err1 := errors.Join(e...) | ||
|
|
||
| // multierr provides a flat error | ||
| err2 := multierr.Append(nil, e[0]) | ||
| err2 = multierr.Append(err2, e[1]) | ||
| err2 = multierr.Append(err2, e[2]) | ||
| err2 = multierr.Append(err2, e[3]) | ||
|
|
||
| params := []struct { | ||
| name string | ||
| err error | ||
| out []error | ||
| }{ | ||
| {"errors.Join nested", err0, e}, | ||
| {"errors.Join flat", err1, e}, | ||
| {"multierr.Append", err2, e}, | ||
| {"nil", nil, []error{nil}}, | ||
| {"single", e[0], []error{e[0]}}, | ||
| } | ||
|
|
||
| for _, p := range params { | ||
| t.Run(p.name, func(t *testing.T) { | ||
| assert.Equal(t, p.out, Flatten(p.err)) | ||
| }) | ||
| } | ||
| } |
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