1 package multierror
2
3 import (
4 "errors"
5 "strings"
6 "testing"
7 )
8
9 func TestGroup(t *testing.T) {
10 err1 := errors.New("group_test: 1")
11 err2 := errors.New("group_test: 2")
12
13 cases := []struct {
14 errs []error
15 nilResult bool
16 }{
17 {errs: []error{}, nilResult: true},
18 {errs: []error{nil}, nilResult: true},
19 {errs: []error{err1}},
20 {errs: []error{err1, nil}},
21 {errs: []error{err1, nil, err2}},
22 }
23
24 for _, tc := range cases {
25 var g Group
26
27 for _, err := range tc.errs {
28 err := err
29 g.Go(func() error { return err })
30
31 }
32
33 gErr := g.Wait()
34 if gErr != nil {
35 for i := range tc.errs {
36 if tc.errs[i] != nil && !strings.Contains(gErr.Error(), tc.errs[i].Error()) {
37 t.Fatalf("expected error to contain %q, actual: %v", tc.errs[i].Error(), gErr)
38 }
39 }
40 } else if !tc.nilResult {
41 t.Fatalf("Group.Wait() should not have returned nil for errs: %v", tc.errs)
42 }
43 }
44 }
45
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