func defaultRunOutputLimit() int {
	const maxArmCPU = 2

	cpu := runtime.NumCPU()
	if runtime.GOARCH == "arm" && cpu > maxArmCPU {
		cpu = maxArmCPU
	}
	return cpu
}

func TestShouldTest(t *testing.T) {
	if *shard != 0 {
		t.Skipf("nothing to test on shard index %d", *shard)
	}

	assert := func(ok bool, _ string) {
		t.Helper()
		if !ok {
			t.Error("test case failed")