Class AbstractClientTest

core/src/test/java/feign/client/AbstractClientTest.java:55–622

AbstractClientTest can be extended to run a set of tests against any Client implementation.

 * implementation.
 */
public abstract class AbstractClientTest {
  public final MockWebServer server = new MockWebServer();

  /** Create a Feign {@link Builder} with a client configured */
  public abstract Builder newBuilder();

  /**
   * Some client implementation tests should override this test if the PATCH operation is
   * unsupported.
   */
  @Test
  public void patch() throws Exception {
    server.enqueue(new MockResponse().setBody("foo"));
    server.enqueue(new MockResponse());

    TestInterface api =
        newBuilder().target(TestInterface.class, "http://localhost:" + server.getPort());

    assertThat(api.patch("")).isEqualTo("foo");

    MockWebServerAssertions.assertThat(server.takeRequest())
        .hasHeaders(
            entry("Accept", Collections.singletonList("text/plain")),
            entry("Content-Length", Collections.singletonList("0")))
        .hasNoHeaderNamed("Content-Type")
        .hasMethod("PATCH");
  }

  @Test
  public void parsesRequestAndResponse() throws IOException, InterruptedException {
    server.enqueue(new MockResponse().setBody("foo").addHeader("Foo: Bar"));

    TestInterface api =
        newBuilder().target(TestInterface.class, "http://localhost:" + server.getPort());

    Response response = api.post("foo");

    assertThat(response.status()).isEqualTo(200);
    assertThat(response.reason()).isEqualTo("OK");
    assertThat(response.headers())
        .hasEntrySatisfying(
            "Content-Length",
            value -> {
              assertThat(value).contains("3");
            })
        .hasEntrySatisfying(
            "Foo",
            value -> {
              assertThat(value).contains("Bar");
            });
    assertThat(response.body().asInputStream())
        .hasSameContentAs(new ByteArrayInputStream("foo".getBytes(UTF_8)));

    RecordedRequest recordedRequest = server.takeRequest();
    assertThat(recordedRequest.getMethod()).isEqualToIgnoringCase("POST");
    assertThat(recordedRequest.getHeader("Foo")).isEqualToIgnoringCase("Bar, Baz");
    assertThat(recordedRequest.getHeader("Accept")).isEqualToIgnoringCase("*/*");
    assertThat(recordedRequest.getHeader("Content-Length")).isEqualToIgnoringCase("3");