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package multierror
import (
"errors"
"strings"
"testing"
)
func TestGroup(t *testing.T) {
err1 := errors.New("group_test: 1")
err2 := errors.New("group_test: 2")
cases := []struct {
errs []error
nilResult bool
}{
{errs: []error{}, nilResult: true},
{errs: []error{nil}, nilResult: true},
{errs: []error{err1}},
{errs: []error{err1, nil}},
{errs: []error{err1, nil, err2}},
}
for _, tc := range cases {
var g Group
for _, err := range tc.errs {
err := err
g.Go(func() error { return err })
}
gErr := g.Wait()
if gErr != nil {
for i := range tc.errs {
if tc.errs[i] != nil && !strings.Contains(gErr.Error(), tc.errs[i].Error()) {
t.Fatalf("expected error to contain %q, actual: %v", tc.errs[i].Error(), gErr)
}
}
} else if !tc.nilResult {
t.Fatalf("Group.Wait() should not have returned nil for errs: %v", tc.errs)
}
}
}
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