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

Question

I have a test method that is provided,

@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)));
    }

I get the error message,

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

What is the issue here?

Alexey Romanov · Accepted Answer · 2019-04-14 16:26:09Z

1

Just as the error message says: the test expects to see the number 1.0 in the JSON it receives (is(1.0)), but the JSON actually contained the string "1.00" at that path. Read https://github.com/json-path/JsonPath for the meaning of paths, but $.reward is just the "reward" field of the root object. So it should look like

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

but was

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

answered Apr 14, 2019 at 16:26

Alexey Romanov

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2 Comments

Arefe Over a year ago

How do I correct it? Sorry if its dumb, but I am not able to. Changing ti to the jsonPath("$.reward", is(1.00))); doesnt solve my problem.

Alexey Romanov Over a year ago

is("1.00"). But first you need to figure out whether it's the test or the system you are testing which should be corrected! Especially since you say the test is "provided".

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