Testing Form posts through MockMVC

Question

I\'m writing tests to verify that I can do a generic form post to our API.

I\'ve also added quite some debugging, but I noticed that the data posted by an actual for

Answer 1

Here is a Kotlin SpringBoot example:

@RunWith(MockitoJUnitRunner::class)
class ApiFormControllerTest {

  lateinit var mvc: MockMvc

  @InjectMocks
  lateinit var apiFormController: ApiFormController

  @Before
  fun setup() {
    mvc = MockMvcBuilders.standaloneSetup(apiFormController).setControllerAdvice(ExceptionAdvice()).build()
  }

  fun MockHttpServletRequestBuilder.withForm(params: Map): MockHttpServletRequestBuilder {
    this.contentType(MediaType.APPLICATION_FORM_URLENCODED)
        .content(
            EntityUtils.toString(
                UrlEncodedFormEntity(
                    params.entries.toList().map { BasicNameValuePair(it.key, it.value) }
                )
            )
        )
    return this
  }

  @Test
  fun canSubmitValidForm() {
    mvc.perform(post("/forms").withForm(mapOf("subject" to "hello")))
        .andExpect(status().isOk)
  }

}