test: use T.TempDir to create temporary test directory (#21043)

A testing cleanup. 

This pull request replaces `os.MkdirTemp` with `t.TempDir`. We can use the `T.TempDir` function from the `testing` package to create temporary directory. The directory created by `T.TempDir` is automatically removed when the test and all its subtests complete. 

This saves us at least 2 lines (error check, and cleanup) on every instance, or in some cases adds cleanup that we forgot.

Reference: https://pkg.go.dev/testing#T.TempDir

```go
func TestFoo(t *testing.T) {
	// before
	tmpDir, err := os.MkdirTemp("", "")
	require.NoError(t, err)
	defer os.RemoveAll(tmpDir)

	// now
	tmpDir := t.TempDir()
}
```

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
This commit is contained in:
Eng Zer Jun 2022-09-04 23:14:53 +08:00 committed by GitHub
parent c722a26e7e
commit 8b0aaa5f86
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24 changed files with 57 additions and 194 deletions

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@ -27,11 +27,9 @@ import (
)
func withKeyFile(t *testing.T, keyname string, callback func(string)) {
tmpDir, err := os.MkdirTemp("", "key-file")
assert.NoError(t, err)
defer util.RemoveAll(tmpDir)
tmpDir := t.TempDir()
err = os.Chmod(tmpDir, 0o700)
err := os.Chmod(tmpDir, 0o700)
assert.NoError(t, err)
keyFile := filepath.Join(tmpDir, keyname)
@ -120,9 +118,7 @@ func doPartialGitClone(dstLocalPath string, u *url.URL) func(*testing.T) {
func doGitCloneFail(u *url.URL) func(*testing.T) {
return func(t *testing.T) {
tmpDir, err := os.MkdirTemp("", "doGitCloneFail")
assert.NoError(t, err)
defer util.RemoveAll(tmpDir)
tmpDir := t.TempDir()
assert.Error(t, git.Clone(git.DefaultContext, u.String(), tmpDir, git.CloneRepoOptions{}))
exist, err := util.IsExist(filepath.Join(tmpDir, "README.md"))
assert.NoError(t, err)