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restic/internal/feature/testing.go

34 lines
678 B
Go

package feature
import (
"fmt"
"testing"
)
// TestSetFlag temporarily sets a feature flag to the given value until the
// returned function is called.
//
// Usage
// ```
// defer TestSetFlag(t, features.Flags, features.ExampleFlag, true)()
// ```
func TestSetFlag(t *testing.T, f *FlagSet, flag FlagName, value bool) func() {
current := f.Enabled(flag)
panicIfCalled := func(msg string) {
panic(msg)
}
if err := f.Apply(fmt.Sprintf("%s=%v", flag, value), panicIfCalled); err != nil {
// not reachable
panic(err)
}
return func() {
if err := f.Apply(fmt.Sprintf("%s=%v", flag, current), panicIfCalled); err != nil {
// not reachable
panic(err)
}
}
}