Source file
src/testing/helper_test.go
1
2
3
4
5 package testing
6
7 import (
8 "regexp"
9 "strings"
10 )
11
12 func TestTBHelper(t *T) {
13 var buf strings.Builder
14 ctx := newTestContext(1, allMatcher())
15 t1 := &T{
16 common: common{
17 signal: make(chan bool),
18 w: &buf,
19 },
20 context: ctx,
21 }
22 t1.Run("Test", testHelper)
23
24 want := `--- FAIL: Test (?s)
25 helperfuncs_test.go:12: 0
26 helperfuncs_test.go:40: 1
27 helperfuncs_test.go:21: 2
28 helperfuncs_test.go:42: 3
29 helperfuncs_test.go:49: 4
30 --- FAIL: Test/sub (?s)
31 helperfuncs_test.go:52: 5
32 helperfuncs_test.go:21: 6
33 helperfuncs_test.go:51: 7
34 helperfuncs_test.go:63: 8
35 --- FAIL: Test/sub2 (?s)
36 helperfuncs_test.go:78: 11
37 helperfuncs_test.go:82: recover 12
38 helperfuncs_test.go:84: GenericFloat64
39 helperfuncs_test.go:85: GenericInt
40 helperfuncs_test.go:71: 9
41 helperfuncs_test.go:67: 10
42 `
43 lines := strings.Split(buf.String(), "\n")
44 durationRE := regexp.MustCompile(`\(.*\)$`)
45 for i, line := range lines {
46 line = strings.TrimSpace(line)
47 line = durationRE.ReplaceAllString(line, "(?s)")
48 lines[i] = line
49 }
50 got := strings.Join(lines, "\n")
51 if got != want {
52 t.Errorf("got output:\n\n%s\nwant:\n\n%s", got, want)
53 }
54 }
55
56 func TestTBHelperParallel(t *T) {
57 var buf strings.Builder
58 ctx := newTestContext(1, newMatcher(regexp.MatchString, "", "", ""))
59 t1 := &T{
60 common: common{
61 signal: make(chan bool),
62 w: &buf,
63 },
64 context: ctx,
65 }
66 t1.Run("Test", parallelTestHelper)
67
68 lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
69 if len(lines) != 6 {
70 t.Fatalf("parallelTestHelper gave %d lines of output; want 6", len(lines))
71 }
72 want := "helperfuncs_test.go:21: parallel"
73 if got := strings.TrimSpace(lines[1]); got != want {
74 t.Errorf("got output line %q; want %q", got, want)
75 }
76 }
77
78 type noopWriter int
79
80 func (nw *noopWriter) Write(b []byte) (int, error) { return len(b), nil }
81
82 func BenchmarkTBHelper(b *B) {
83 w := noopWriter(0)
84 ctx := newTestContext(1, allMatcher())
85 t1 := &T{
86 common: common{
87 signal: make(chan bool),
88 w: &w,
89 },
90 context: ctx,
91 }
92 f1 := func() {
93 t1.Helper()
94 }
95 f2 := func() {
96 t1.Helper()
97 }
98 b.ResetTimer()
99 b.ReportAllocs()
100 for i := 0; i < b.N; i++ {
101 if i&1 == 0 {
102 f1()
103 } else {
104 f2()
105 }
106 }
107 }
108
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