if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestSimpleDeadlock(t *testing.T) {
	testDeadlock(t, "SimpleDeadlock")
}

func TestInitDeadlock(t *testing.T) {
	testDeadlock(t, "InitDeadlock")
}

func TestLockedDeadlock(t *testing.T) {
	testDeadlock(t, "LockedDeadlock")
}