java - Junit java.lang.AssertionError : JSON path "$.reward"

Question

我提供了一个测试方法，

@Test
    public void calculateReward() throws Exception {

        when(userService.findById(any(Long.class))).thenReturn(Optional.of(user));
        int steps = 1000;

        user.setCurrentSteps(steps);
        user.setTotalSteps(steps);

        when(userService.save(any(User.class))).thenReturn(user);
        Map<String, Double> map = new HashMap<>();
        map.put("EUR", 1.0);
        when(currencyUtilities.getCurrencyMap()).thenReturn(map);

        mockMvc.perform(put("/api/v1/users/calculateReward")
                .param("userId", String.valueOf(user.getId())))
                .andExpect(
                        status().isCreated()
                ).andExpect(
                content().contentType(MediaType.APPLICATION_JSON_UTF8)
        ).andDo(print())
                .andExpect(
                        jsonPath("$.name", is(user.getName()))
                ).andExpect(
                jsonPath("$.currency", is(user.getCurrencyName()))
        ).andExpect(
                jsonPath("$.reward", is(1.0)));
    }

我收到错误消息，

java.lang.AssertionError: JSON path "$.reward"
Expected: is <1.0>
     but: was "1.00"
Expected :is <1.0>
Actual   :"1.00"

这里有什么问题？

Answer 1

正如错误消息所示:测试期望在收到的 JSON 中看到数字 1.0 (is(1.0))，但 JSON 实际上包含字符串 "1.00" 在该路径上。阅读 https://github.com/json-path/JsonPath了解路径的含义，但 $.reward 只是根对象的 "reward" 字段。所以它应该看起来像

{
  "reward": 1.0,
  ... other fields including "name" and "currency"
}

但是

{
  "reward": "1.00",
  ...
}