Wiremock failed to match request

Question

I'm trying to assert previously stubbed endpoint that is being called during the OAuth2 flow:

        stubFor(
        post(urlPathEqualTo("/token"))
            .withHeader(AUTHORIZATION, equalTo("Basic cGluLmFwaS5jbGllbnRJZDpwaW4uYXBpLmNsaWVudFNlY3JldA=="))
            .withHeader(CONTENT_TYPE, equalTo("application/x-www-form-urlencoded;charset=UTF-8"))
            .withHeader(ACCEPT, equalTo(APPLICATION_JSON_VALUE + "," + APPLICATION_FORM_URLENCODED_VALUE))
            .willReturn(aResponse()
                .withStatus(HttpStatus.OK.value())
                .withHeader(CONTENT_TYPE, "application/json")
                .withHeader(CONNECTION, "Close")
                .withBody("{\n" +
                    "  \"access_token\": \"62466f2c-ff9e-4c6c-a866-b8296cf78041\",\n" +
                    "  \"scope\": \"trust read write\",\n" +
                    "  \"token_type\": \"bearer\",\n" +
                    "  \"expires_in\": 20300,\n" +
                    "}")));

and

verify(postRequestedFor(urlPathEqualTo("/token")));

There is a piece of log, stubbed/actual requests look equals, but Wiremock says Header does not match:

Could someone, please, suggest what can be wrong here? Thank you in advance!

Answer 1

To me it looks like an issue with a space after comma, try:

.withHeader(ACCEPT, equalTo(APPLICATION_JSON_VALUE + ", " + APPLICATION_FORM_URLENCODED_VALUE))

By the way, comparing headers with equalTo might be flaky. You might consider using containing:

post(urlPathEqualTo("/token"))
    .withHeader(ACCEPT, containing(APPLICATION_JSON_VALUE))
    .withHeader(ACCEPT, containing(APPLICATION_FORM_URLENCODED_VALUE))