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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package testing
import (
"bytes"
"regexp"
"strings"
)
func TestTBHelper(t *T) {
var buf bytes.Buffer
ctx := newTestContext(1, newMatcher(regexp.MatchString, "", ""))
t1 := &T{
common: common{
signal: make(chan bool),
w: &buf,
},
context: ctx,
}
t1.Run("Test", testHelper)
want := `--- FAIL: Test (?s)
helperfuncs_test.go:12: 0
helperfuncs_test.go:33: 1
helperfuncs_test.go:21: 2
helperfuncs_test.go:35: 3
helperfuncs_test.go:42: 4
--- FAIL: Test/sub (?s)
helperfuncs_test.go:45: 5
helperfuncs_test.go:21: 6
helperfuncs_test.go:44: 7
helperfuncs_test.go:56: 8
helperfuncs_test.go:64: 9
helperfuncs_test.go:60: 10
`
lines := strings.Split(buf.String(), "\n")
durationRE := regexp.MustCompile(`\(.*\)$`)
for i, line := range lines {
line = strings.TrimSpace(line)
line = durationRE.ReplaceAllString(line, "(?s)")
lines[i] = line
}
got := strings.Join(lines, "\n")
if got != want {
t.Errorf("got output:\n\n%s\nwant:\n\n%s", got, want)
}
}
func TestTBHelperParallel(t *T) {
var buf bytes.Buffer
ctx := newTestContext(1, newMatcher(regexp.MatchString, "", ""))
t1 := &T{
common: common{
signal: make(chan bool),
w: &buf,
},
context: ctx,
}
t1.Run("Test", parallelTestHelper)
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
if len(lines) != 6 {
t.Fatalf("parallelTestHelper gave %d lines of output; want 6", len(lines))
}
want := "helperfuncs_test.go:21: parallel"
if got := strings.TrimSpace(lines[1]); got != want {
t.Errorf("got output line %q; want %q", got, want)
}
}
func TestTBHelperLineNumer(t *T) {
var buf bytes.Buffer
ctx := newTestContext(1, newMatcher(regexp.MatchString, "", ""))
t1 := &T{
common: common{
signal: make(chan bool),
w: &buf,
},
context: ctx,
}
t1.Run("Test", func(t *T) {
helperA := func(t *T) {
t.Helper()
t.Run("subtest", func(t *T) {
t.Helper()
t.Fatal("fatal error message")
})
}
helperA(t)
})
want := "helper_test.go:92: fatal error message"
got := ""
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
if len(lines) > 0 {
got = strings.TrimSpace(lines[len(lines)-1])
}
if got != want {
t.Errorf("got output:\n\n%v\nwant:\n\n%v", got, want)
}
}
type noopWriter int
func (nw *noopWriter) Write(b []byte) (int, error) { return len(b), nil }
func BenchmarkTBHelper(b *B) {
w := noopWriter(0)
ctx := newTestContext(1, newMatcher(regexp.MatchString, "", ""))
t1 := &T{
common: common{
signal: make(chan bool),
w: &w,
},
context: ctx,
}
f1 := func() {
t1.Helper()
}
f2 := func() {
t1.Helper()
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
if i&1 == 0 {
f1()
} else {
f2()
}
}
}
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