Function enableExperimentForTest

task_test.go:3041–3050

enableExperimentForTest enables the experiment behind pointer e for the duration of test t and sub-tests, with the experiment being restored to its previous state when tests complete. Typically experiments are controlled via TASK_X_ env vars, but we cannot use those in tests because the experiment

(t *testing.T, e *experiments.Experiment, val int)

// Typically experiments are controlled via TASK_X_ env vars, but we cannot use those in tests
// because the experiment settings are parsed during experiments.init(), before any tests run.
func enableExperimentForTest(t *testing.T, e *experiments.Experiment, val int) {
	t.Helper()
	prev := *e
	*e = experiments.Experiment{
		Name:          prev.Name,
		AllowedValues: []int{val},
		Value:         val,
	}
	t.Cleanup(func() { *e = prev })
}