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errgroup_test.go
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errgroup_test.go
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package errgroup_test
import (
"errors"
"testing"
"github.com/facebookgo/ensure"
"github.com/facebookgo/errgroup"
)
func TestNada(t *testing.T) {
t.Parallel()
var g errgroup.Group
ensure.Nil(t, g.Wait())
}
func TestOneError(t *testing.T) {
t.Parallel()
e := errors.New("")
var g errgroup.Group
g.Error(e)
ensure.True(t, g.Wait() == e)
}
func TestTwoErrors(t *testing.T) {
t.Parallel()
e1 := errors.New("e1")
e2 := errors.New("e2")
var g errgroup.Group
g.Error(e1)
g.Error(e2)
ensure.DeepEqual(t, g.Wait().Error(), "multiple errors: e1 | e2")
}
func TestInvalidNilError(t *testing.T) {
defer ensure.PanicDeepEqual(t, "error must not be nil")
(&errgroup.Group{}).Error(nil)
}
func TestInvalidZeroLengthMultiError(t *testing.T) {
defer ensure.PanicDeepEqual(t, "MultiError with no errors")
(errgroup.MultiError{}).Error()
}
func TestInvalidOneLengthMultiError(t *testing.T) {
defer ensure.PanicDeepEqual(t, "MultiError with only 1 error")
(errgroup.MultiError{errors.New("")}).Error()
}
func TestAddDone(t *testing.T) {
t.Parallel()
var g errgroup.Group
l := 10
g.Add(l)
for i := 0; i < l; i++ {
go g.Done()
}
ensure.Nil(t, g.Wait())
}