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e9d328aa16
This allows turning the following pattern in tests: value, cleanup := setupSomething() defer cleanup() into the following: value := setupSomething(t)
29 lines
719 B
Go
29 lines
719 B
Go
package testutil
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import "os"
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// Setenv sets the value of an environment variable for the duration of a test.
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// It returns value.
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func Setenv(c Cleanuper, name, value string) string {
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SaveEnv(c, name)
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os.Setenv(name, value)
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return value
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}
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// Setenv unsets an environment variable for the duration of a test.
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func Unsetenv(c Cleanuper, name string) {
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SaveEnv(c, name)
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os.Unsetenv(name)
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}
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// SaveEnv saves the current value of an environment variable so that it will be
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// restored after a test has finished.
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func SaveEnv(c Cleanuper, name string) {
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oldValue, existed := os.LookupEnv(name)
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if existed {
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c.Cleanup(func() { os.Setenv(name, oldValue) })
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} else {
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c.Cleanup(func() { os.Unsetenv(name) })
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}
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}
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