github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-08-19 08:40:42 +00:00
Code Issues Projects Releases Wiki Activity

Replace os.Setenv with testing.T.Setenv in tests

Browse Source 
T.Setenv ensures that the environment is returned to its prior state
when the test ends. It also panics when called from a parallel test to
prevent racy test interdependencies.

Similarly, T.Cleanup ensures the environment is restored after a test
or any of its parallel sub-tests call os.Unsetenv.
This commit is contained in:
Chris Bandy 2023-04-15 11:19:24 -05:00
parent 53cccbe4f9
commit f3b9e0ddc9
1 changed files with 6 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
cluster/images/etcd/migrate/options_test.go
View File

@ -23,15 +23,15 @@ import (
func setEnvVar(t *testing.T, env, val string, exists bool) {
if exists {
if err := os.Setenv(env, val); err != nil {
t.Errorf("could't set env %s: %v", env, err)
}
return
}
t.Setenv(env, val)
} else if prev, ok := os.LookupEnv(env); ok {
t.Cleanup(func() { os.Setenv(env, prev) })
if err := os.Unsetenv(env); err != nil {
t.Errorf("couldn't unset env %s: %v", env, err)
}
}
}
func TestFallbackToEnv(t *testing.T) {
testCases := []struct {
@ -69,12 +69,6 @@ func TestFallbackToEnv(t *testing.T) {
for _, test := range testCases {
t.Run(test.desc, func(t *testing.T) {
prevVal, prevOk := os.LookupEnv(test.env)
defer func() {
// preserve the original behavior
setEnvVar(t, test.env, prevVal, prevOk)
}()
setEnvVar(t, test.env, test.value, test.valueSet)
value, err := fallbackToEnv("some-flag", test.env)
if test.expectedError {
@ -130,12 +124,6 @@ func TestFallbackToEnvWithDefault(t *testing.T) {
for _, test := range testCases {
t.Run(test.desc, func(t *testing.T) {
prevVal, prevOk := os.LookupEnv(test.env)
defer func() {
// preserve the original behavior
setEnvVar(t, test.env, prevVal, prevOk)
}()
setEnvVar(t, test.env, test.value, test.valueSet)
value := fallbackToEnvWithDefault("some-flag", test.env, test.defaultValue)
if value != test.expectedValue {