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testing: update helperNames just before checking it

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parent's helperNames has not been set when frameSkip called, moving
helperNames initilazing to frameSkip.

Fixes #44887

Change-Id: I5107c5951033e5e47d1ac441eac3ba5344a7bdc0
GitHub-Last-Rev: 44b90b2e2e
GitHub-Pull-Request: golang/go#45071
Reviewed-on: https://go-review.googlesource.com/c/go/+/302469
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Tao Qingyun 2021-03-18 00:10:38 +00:00 committed by Ian Lance Taylor
parent dcc96e4b94
commit 6704843202
2 changed files with 39 additions and 8 deletions
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32
src/testing/helper_test.go
View File

@ -71,6 +71,38 @@ func TestTBHelperParallel(t *T) {
}
}
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 }

15
src/testing/testing.go
View File

@ -509,6 +509,13 @@ func (c *common) frameSkip(skip int) runtime.Frame {
}
return prevFrame
}
// If more helper PCs have been added since we last did the conversion
if c.helperNames == nil {
c.helperNames = make(map[string]struct{})
for pc := range c.helperPCs {
c.helperNames[pcToName(pc)] = struct{}{}
}
}
if _, ok := c.helperNames[frame.Function]; !ok {
// Found a frame that wasn't inside a helper function.
return frame
@ -521,14 +528,6 @@ func (c *common) frameSkip(skip int) runtime.Frame {
// and inserts the final newline if needed and indentation spaces for formatting.
// This function must be called with c.mu held.
func (c *common) decorate(s string, skip int) string {
// If more helper PCs have been added since we last did the conversion
if c.helperNames == nil {
c.helperNames = make(map[string]struct{})
for pc := range c.helperPCs {
c.helperNames[pcToName(pc)] = struct{}{}
}
}
frame := c.frameSkip(skip)
file := frame.File
line := frame.Line