diff options
Diffstat (limited to 'src/testing/testing.go')
| -rw-r--r-- | src/testing/testing.go | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/testing/testing.go b/src/testing/testing.go index 85a92c9384..d546f56478 100644 --- a/src/testing/testing.go +++ b/src/testing/testing.go @@ -239,6 +239,7 @@ import ( "fmt" "internal/race" "io" + "io/ioutil" "os" "runtime" "runtime/debug" @@ -362,6 +363,10 @@ type common struct { barrier chan bool // To signal parallel subtests they may start. signal chan bool // To signal a test is done. sub []*T // Queue of subtests to be run in parallel. + + tempDirOnce sync.Once + tempDir string + tempDirErr error } // Short reports whether the -test.short flag is set. @@ -561,6 +566,7 @@ type TB interface { SkipNow() Skipf(format string, args ...interface{}) Skipped() bool + TempDir() string // A private method to prevent users implementing the // interface and so future additions to it will not @@ -791,6 +797,30 @@ func (c *common) Cleanup(f func()) { } } +// TempDir returns a temporary directory for the test to use. +// It is lazily created on first access, and calls t.Fatal if the directory +// creation fails. +// Subsequent calls to t.TempDir return the same directory. +// The directory is automatically removed by Cleanup when the test and +// all its subtests complete. +func (c *common) TempDir() string { + c.tempDirOnce.Do(func() { + c.Helper() + c.tempDir, c.tempDirErr = ioutil.TempDir("", c.Name()) + if c.tempDirErr == nil { + c.Cleanup(func() { + if err := os.RemoveAll(c.tempDir); err != nil { + c.Errorf("TempDir RemoveAll cleanup: %v", err) + } + }) + } + }) + if c.tempDirErr != nil { + c.Fatalf("TempDir: %v", c.tempDirErr) + } + return c.tempDir +} + // panicHanding is an argument to runCleanup. type panicHandling int |