t.Errorf("mbig.MapIndex(\"hello\") for nil map = %v, want Invalid Value", x)
	}

	// Test that deletes from a nil map succeed.
	mv.SetMapIndex(ValueOf("hi"), Value{})
}

func TestChan(t *testing.T) {
	for loop := 0; loop < 2; loop++ {
		var c chan int
		var cv Value

		// check both ways to allocate channels
		switch loop {
		case 1:
			c = make(chan int, 1)