[英]Mockito mocking the void methods
我正在使用 Mokito 進行測試,我有以下場景。 我正在嘗試測試此代碼
public CartResponse processDeleteCartEntry(UUID cartId, Integer rowKey, JsonMessages messages)
throws UnexpectedException {
Cart cart = cartService.getById(cartId);
CartResponse cartResponse = null;
if (cart != null) {
cartService.removeItem(cart, rowKey, messages);
cartResponse = buildCartResponse(cart);
}
return cartResponse;
}
cartService.removeItem(cart, rowKey, messages);
不返回任何東西(無效) ,這是我的測試用例
@Test
public void testRemoveCartItem() throws UnexpectedException {
Cart cart = getCart();
//given
given(cartService.getById(cart.getId())).willReturn(cart);
//When
CartResponse cartResponse = mobileAppCartHandler.processDeleteCartEntry(cart.getId(), 0, new JsonMessages());
//Then
assertNotNull(cartResponse);
assertEquals(ResponseStatus.OK, cartResponse.getStatus());
assertEquals(1, cartResponse.getEntries().size());
}
我不想進行實際調用來刪除一個項目,但同時它應該刪除該項目以便我可以斷言它。 我的購物車有 2 件物品,移除后應該是一件。 我應該使用when
條件嗎?
對於 void 方法,您需要先存根操作。
Mockito.doAnswer(invocation -> {
// grab args and remove from cart
})
.when(cartService) // mocked cartService
.removeItem(cart, rowKey, messages); // You can use argumentMatchers here
對於無效 function 使用doAnswer
@Test
public void testRemoveCartItem() throws UnexpectedException {
Cart cart = getCart();
int rowKey = 0;
JsonMessages messages = new JsonMessages()();
//given
given(cartService.getById(cart.getId())).willReturn(cart);
doAnswer(new Answer<Void>() {
@Override
public void answer(InvocationOnMock invocation) throws Throwable {
//get the arguments passed to mock
Object[] args = invocation.getArguments();
//get the mock
Object mock = invocation.getMock();
Cart c = (Cart)args[0];
int row = (int)(Integer)args[1];
c.removeItem(row); //Just an assumption here
//return
return null;
}
})
.when(cartService).removeItem(cart, rowKey, messages);
//When
CartResponse cartResponse = mobileAppCartHandler.processDeleteCartEntry(cart.getId(), rowKey, messages);
//Then
assertNotNull(cartResponse);
assertEquals(ResponseStatus.OK, cartResponse.getStatus());
assertEquals(1, cartResponse.getEntries().size());
}
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