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test: use T.TempDir to create temporary test directory (#15400)

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This commit replaces `ioutil.TempDir` with `t.TempDir` in tests. The
directory created by `t.TempDir` is automatically removed when the test
and all its subtests complete.

Prior to this commit, temporary directory created using `ioutil.TempDir`
needs to be removed manually by calling `os.RemoveAll`, which is omitted
in some tests. The error handling boilerplate e.g.
	defer func() {
		if err := os.RemoveAll(dir); err != nil {
			t.Fatal(err)
		}
	}
is also tedious, but `t.TempDir` handles this for us nicely.

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

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
This commit is contained in:
Eng Zer Jun
2022-07-26 03:37:26 +08:00
committed by GitHub
parent f23f442d33
commit 0a3b1ad4eb
24 changed files with 137 additions and 412 deletions
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21
internal/mountinfo/mountinfo_linux_test.go
View File

@@ -37,11 +37,8 @@ func TestCrossDeviceMountPaths(t *testing.T) {
/dev/2 /path/to/1/2 type2 flags,1,2=3 2 2
/dev/3 /path/to/1.1 type3 falgs,1,2=3 3 3
`
dir, err := ioutil.TempDir("", "TestReadProcmountInfos")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
var err error
dir := t.TempDir()
mountsPath := filepath.Join(dir, "mounts")
if err = ioutil.WriteFile(mountsPath, []byte(successCase), 0o666); err != nil {
t.Fatal(err)
@@ -89,11 +86,8 @@ func TestCrossDeviceMount(t *testing.T) {
/dev/2 /path/to/1/2 type2 flags,1,2=3 2 2
/dev/3 /path/to/1.1 type3 falgs,1,2=3 3 3
`
dir, err := ioutil.TempDir("", "TestReadProcmountInfos")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
var err error
dir := t.TempDir()
mountsPath := filepath.Join(dir, "mounts")
if err = ioutil.WriteFile(mountsPath, []byte(successCase), 0o666); err != nil {
t.Fatal(err)
@@ -140,11 +134,8 @@ func TestReadProcmountInfos(t *testing.T) {
/dev/1 /path/to/1 type1 flags 1 1
/dev/2 /path/to/2 type2 flags,1,2=3 2 2
`
dir, err := ioutil.TempDir("", "TestReadProcmountInfos")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
var err error
dir := t.TempDir()
mountsPath := filepath.Join(dir, "mounts")
if err = ioutil.WriteFile(mountsPath, []byte(successCase), 0o666); err != nil {