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Source file
src/testing/helperfuncs_test.go
Documentation: testing
1
2
3
4
5 package testing_test
6
7 import (
8 "sync"
9 "testing"
10 )
11
12
13
14 func notHelper(t *testing.T, msg string) {
15 t.Error(msg)
16 }
17
18 func helper(t *testing.T, msg string) {
19 t.Helper()
20 t.Error(msg)
21 }
22
23 func notHelperCallingHelper(t *testing.T, msg string) {
24 helper(t, msg)
25 }
26
27 func helperCallingHelper(t *testing.T, msg string) {
28 t.Helper()
29 helper(t, msg)
30 }
31
32 func genericHelper[G any](t *testing.T, msg string) {
33 t.Helper()
34 t.Error(msg)
35 }
36
37 var genericIntHelper = genericHelper[int]
38
39 func testTestHelper(t *testing.T) {
40 testHelper(t)
41 }
42
43 func testHelper(t *testing.T) {
44
45
46 notHelper(t, "0")
47 helper(t, "1")
48 notHelperCallingHelper(t, "2")
49 helperCallingHelper(t, "3")
50
51
52 fn := func(msg string) {
53 t.Helper()
54 t.Error(msg)
55 }
56 fn("4")
57
58 t.Run("sub", func(t *testing.T) {
59 helper(t, "5")
60 notHelperCallingHelper(t, "6")
61
62
63 t.Helper()
64 t.Error("7")
65 })
66
67
68
69 t.Cleanup(func() {
70 t.Helper()
71 t.Error("10")
72 })
73 t.Cleanup(func() {
74 t.Helper()
75 t.Error("9")
76 })
77
78
79
80 helperSubCallingHelper(t, "11")
81
82
83
84 recoverHelper(t, "12")
85
86 genericHelper[float64](t, "GenericFloat64")
87 genericIntHelper(t, "GenericInt")
88 }
89
90 func parallelTestHelper(t *testing.T) {
91 var wg sync.WaitGroup
92 for i := 0; i < 5; i++ {
93 wg.Add(1)
94 go func() {
95 notHelperCallingHelper(t, "parallel")
96 wg.Done()
97 }()
98 }
99 wg.Wait()
100 }
101
102 func helperSubCallingHelper(t *testing.T, msg string) {
103 t.Helper()
104 t.Run("sub2", func(t *testing.T) {
105 t.Helper()
106 t.Fatal(msg)
107 })
108 }
109
110 func recoverHelper(t *testing.T, msg string) {
111 t.Helper()
112 defer func() {
113 t.Helper()
114 if err := recover(); err != nil {
115 t.Errorf("recover %s", err)
116 }
117 }()
118 doPanic(t, msg)
119 }
120
121 func doPanic(t *testing.T, msg string) {
122 t.Helper()
123 panic(msg)
124 }
125
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