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

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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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9
tests/integration/lfs_local_endpoint_test.go
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@ -25,15 +25,12 @@ func str2url(raw string) *url.URL {
func TestDetermineLocalEndpoint(t *testing.T) {
defer tests.PrepareTestEnv(t)()
root, _ := os.MkdirTemp("", "lfs_test")
defer os.RemoveAll(root)
root := t.TempDir()
rootdotgit, _ := os.MkdirTemp("", "lfs_test")
defer os.RemoveAll(rootdotgit)
rootdotgit := t.TempDir()
os.Mkdir(filepath.Join(rootdotgit, ".git"), 0o700)
lfsroot, _ := os.MkdirTemp("", "lfs_test")
defer os.RemoveAll(lfsroot)
lfsroot := t.TempDir()
// Test cases
cases := []struct {