WebTestClient post method is no value at JSON path

Question

I'm testing for a controller but my test code is no value at JSON path.

It's my test code.

    @Test
    @WithMockCustomUser
    void When_ValidBoardIsUsedToCreateBoard_Then_WillSuccess() {
        BoardDTO boardDTO = BoardDTO.builder().title("test").description("test").build();
        AuthenticatedUser authenticatedUser = (AuthenticatedUser) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        Mono<BoardDTO> boardDTOMono = Mono.just(BoardDTO.builder()
                .id(1L).title("test").description("test").authorId(1L)
                .build());

        // It failed.
        Mockito.when(boardService.saveBoard(boardDTO, authenticatedUser))
                .thenReturn(boardDTOMono);

        // It succeeded.
        // Mockito.when(boardService.saveBoard(any(BoardDTO.class), any(AuthenticatedUser.class)))
        //        .thenReturn(boardDTOMono);

        webTestClient.post().uri("/api/saveBoard")
                .contentType(MediaType.APPLICATION_JSON)
                .body(BodyInserters.fromValue(boardDTO))
                .exchange()
                .expectStatus().isOk()
                .expectBody()
                .jsonPath("$.title").isEqualTo("test");
    }

and it's my controller's code

    @PostMapping("/api/saveBoard")
    public Publisher<BoardDTO> saveBoard(@RequestBody BoardDTO boardDTO,
            @AuthenticationPrincipal AuthenticatedUser authenticatedUser) {
        return boardService.saveBoard(boardDTO, authenticatedUser);
    }

The test results in an error.

    java.lang.AssertionError: No value at JSON path "$.title"
 at org.springframework.test.util.JsonPathExpectationsHelper.evaluateJsonPath(JsonPathExpectationsHelper.java:304)
 at org.springframework.test.util.JsonPathExpectationsHelper.assertValue(JsonPathExpectationsHelper.java:99)
 at org.springframework.test.web.reactive.server.JsonPathAssertions.isEqualTo(JsonPathAssertions.java:54)
 at com.reactive.tikwon.controllers.BoardControllerTest.Given_UserIsAuthenticated_When_ValidBoardNameAndBoardContentAreUsedToCreateBoard_Then_SavingWillSuccess(BoardControllerTest.java:80)
 at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
 at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
Caused by: com.jayway.jsonpath.PathNotFoundException: Expected to find an object with property ['title'] in path $ but found 'net.minidev.json.JSONArray'. This is not a json object according to the JsonProvider: 'com.jayway.jsonpath.spi.json.JsonSmartJsonProvider'.

I want to succeed without any(). Why is it failing without any()? And how can I succeed the test without any()?

I need your helps, please.

WebTestClient post method is no value at JSON path

0 Answers0