52 lines
748 B
Go
52 lines
748 B
Go
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package notation
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import (
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"os"
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"strings"
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"testing"
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)
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func withEnv(t *testing.T, e ...string) (revert func()) {
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var r []func()
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revert = func() {
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for i := range r {
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r[i]()
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}
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}
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revertOne := func(key, value string, existed bool) func() {
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return func() {
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if existed {
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if err := os.Setenv(key, value); err != nil {
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t.Fatal(err)
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}
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return
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}
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if err := os.Unsetenv(key); err != nil {
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t.Fatal(err)
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}
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}
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}
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for i := range e {
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var key, value string
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p := strings.Split(e[i], "=")
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key = p[0]
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if len(p) > 1 {
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value = p[1]
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}
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prev, ok := os.LookupEnv(key)
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if err := os.Setenv(key, value); err != nil {
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revert()
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t.Fatal(err)
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}
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r = append(r, revertOne(key, prev, ok))
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}
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return
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}
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