Question

我写了这个测试：

@Test
public void testDistance() {
    World world = mock(World.class);

    AbstractWarp warp = mock(AbstractWarp.class);
    Location loc = new Location(world, 0, 0, 0);
    when(warp.getLocation()).thenReturn(loc);

    Player player = mock(Player.class);
    Location loc2 = new Location(world, 100, 0, 0);
    when(player.getLocation()).thenReturn(loc2);

    double expected = 100;
    double actual = warp.distance(player);

    verify(player).getLocation();
    verify(warp).getLocation();
    assertEquals(expected, loc.distance(loc2), .1);
    assertEquals(expected, actual, .1);
}

对于AbstractWarp类中的此方法：

public double distance(Player player) {
    return player.getLocation().distance(getLocation());
}

我无法弄清楚为什么第一次验证失败并带有以下痕迹：

Wanted but not invoked:
player.getLocation();
-> at paperwarp.domain.AbstractWarpTest.testDistance(AbstractWarpTest.java:36)
Actually, there were zero interactions with this mock.

我做错了什么？

Answer 1

你做错了是你为AbstractWarp创建了一个模拟器，因此永远不会调用AbstractWarp.distance的实际实现。

AbstractWarp所需要的是spy而不是mock，如下所示：

AbstractWarp warp = spy(new AbstractWarp()); //instead of new AbstractWarp() use whatever other initialization is appropriate
doReturn(loc).when(warp).getLocation();

请注意，如果您实际上没有打电话给AbstractWarp.getLocation，那么spy根本不需要AbstractWarp。普通班级会做得很好

我使用mockito错了吗？

1 个答案: