Add tests to the project

[kzwierzynski]

Consider adding some tests to the project:
-unit
-integration
-end to end (e2e)
-performance
-smoke
Familiarize yourself with the notions connected with TDD and implement applicable/missing tests to the project.

[michalkowol]

Wiremock

    testImplementation("org.springframework.cloud:spring-cloud-contract-wiremock")

@Configuration
class WireMockConfig {

    @Bean
    WireMockConfiguration wireMockConfiguration(@Value("${wiremock.server.port}") int port) {
        return wireMockConfig()
            .port(port)
            .fileSource(new ClasspathFileSource("."))
            .jettyHeaderBufferSize(32768)
            .notifier(new Slf4jNotifier(true));
    }
}

@RunWith(SpringRunner.class)
@ActiveProfiles("test")
@SpringBootTest(webEnvironment = RANDOM_PORT)
@AutoConfigureMockMvc
@AutoConfigureWireMock(port = DYNAMIC_PORT)
public abstract class IntegrationTest {

    @Autowired
    protected MockMvc mvc;
}

application-test.properties

app.web.client.some-third-party-service.host=http://localhost:${wiremock.server.port}
logging.WireMock=debug

public class SampleIntTest extends IntegrationTest {

    @Test
    public void shouldCheckEndpoint() throws Exception {
        // given
        MockHttpServletRequestBuilder request = MockMvcRequestBuilders
            .get("/some-endpoint/2.1")
            .param("param", "value")
            .accept(APPLICATION_JSON_VALUE);

        // when
        ResultActions result = mvc.perform(request);

        // then
        result
            .andExpect(status().isOk())
            .andExpect(jsonPath("$.data.filed", equalTo(false)));
    }
}

[michalkowol]

https://github.com/awaitility/awaitility