問題描述

我正在使用 mockito 驗證一個方法已被調用.方法:

I'm verifying with mockito that a method has been called. The method:

public void createButtons(final List<Button> buttonsConfiguration) {...}

由于傳遞哪個列表并不重要，因此我驗證該方法的調用如下:

Since It doesn't matter which list is passed I verify that the method is called as follows:

verify(mock).createButtons(Matchers.anyListOf(Button.class));

但是，List 的大小很重要.因此，哪個 List 并不重要，但列表必須有 X 個元素.

But, the size of the List is important. So, it doesn't matter which List but the list has to have X elements.

這可能嗎?

推薦答案

一種方法是使用 Captor

One way is to use a Captor

ArgumentCaptor<List> captor = ArgumentCaptor.forClass(List.class);
verify(mock).createButtons(captor.capture());
assertEquals(x, captor.getValue().size()); // if expecting single list
assertEquals(x, captor.getValues().size()); // if expecting multiple lists

請參閱 http://docs.mockito.googlecode.com/hg/org/mockito/Mockito.html#15 獲取文檔.

您還可以使用自定義參數匹配器.該文檔顯示了一個完全符合您要求的示例:

You could also use a custom argument matcher. The documentation shows an example that does exactly what you want:

http://docs.mockito.googlecode.com/hg/org/mockito/ArgumentMatcher.html

 class IsListOfTwoElements extends ArgumentMatcher<List> {
     public boolean matches(Object list) {
         return ((List) list).size() == 2;
     }
 }
 
 List mock = mock(List.class);
 when(mock.addAll(argThat(new IsListOfTwoElements()))).thenReturn(true);
 mock.addAll(Arrays.asList("one", "two"));
 verify(mock).addAll(argThat(new IsListOfTwoElements()));

例如，您還可以添加一個構造函數，以便指定所需的列表大小等.

You could, for instance, also add a constructor so you can specify list size desired, etc.

這篇關于mockito anyList 給定大小的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！