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/*
* Copyright 2013 Netflix, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package feign;
import okhttp3.mockwebserver.MockResponse;
import okhttp3.mockwebserver.MockWebServer;
import org.junit.Rule;
import org.junit.Test;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import feign.codec.Decoder;
import feign.codec.Encoder;
import static feign.assertj.MockWebServerAssertions.assertThat;
import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class FeignBuilderTest {
@Rule
public final MockWebServer server = new MockWebServer();
@Test
public void testDefaults() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
TestInterface api = Feign.builder().target(TestInterface.class, url);
Response response = api.codecPost("request data");
assertEquals("response data", Util.toString(response.body().asReader()));
assertThat(server.takeRequest())
.hasBody("request data");
}
/** Shows exception handling isn't required to coerce 404 to null or empty */
@Test
public void testDecode404() throws Exception {
server.enqueue(new MockResponse().setResponseCode(404));
server.enqueue(new MockResponse().setResponseCode(404));
server.enqueue(new MockResponse().setResponseCode(400));
String url = "http://localhost:" + server.getPort();
TestInterface api = Feign.builder().decode404().target(TestInterface.class, url);
assertThat(api.getQueues("/")).isEmpty(); // empty, not null!
assertThat(api.decodedPost()).isNull(); // null, not empty!
try { // ensure other 400 codes are not impacted.
api.decodedPost();
failBecauseExceptionWasNotThrown(FeignException.class);
} catch (FeignException e) {
assertThat(e.status()).isEqualTo(400);
}
}
@Test
public void testUrlPathConcatUrlTrailingSlash() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort() + "/";
TestInterface api = Feign.builder().target(TestInterface.class, url);
api.codecPost("request data");
assertThat(server.takeRequest()).hasPath("/");
}
@Test
public void testUrlPathConcatNoPathOnRequestLine() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort() + "/";
TestInterface api = Feign.builder().target(TestInterface.class, url);
api.getNoPath();
assertThat(server.takeRequest()).hasPath("/");
}
@Test
public void testUrlPathConcatNoInitialSlashOnPath() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort() + "/";
TestInterface api = Feign.builder().target(TestInterface.class, url);
api.getNoInitialSlashOnSlash();
assertThat(server.takeRequest()).hasPath("/api/thing");
}
@Test
public void testUrlPathConcatNoInitialSlashOnPathNoTrailingSlashOnUrl() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
TestInterface api = Feign.builder().target(TestInterface.class, url);
api.getNoInitialSlashOnSlash();
assertThat(server.takeRequest()).hasPath("/api/thing");
}
@Test
public void testOverrideEncoder() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
Encoder encoder = new Encoder() {
@Override
public void encode(Object object, Type bodyType, RequestTemplate template) {
template.body(object.toString());
}
};
TestInterface api = Feign.builder().encoder(encoder).target(TestInterface.class, url);
api.encodedPost(Arrays.asList("This", "is", "my", "request"));
assertThat(server.takeRequest())
.hasBody("[This, is, my, request]");
}
@Test
public void testOverrideDecoder() throws Exception {
server.enqueue(new MockResponse().setBody("success!"));
String url = "http://localhost:" + server.getPort();
Decoder decoder = new Decoder() {
@Override
public Object decode(Response response, Type type) {
return "fail";
}
};
TestInterface api = Feign.builder().decoder(decoder).target(TestInterface.class, url);
assertEquals("fail", api.decodedPost());
assertEquals(1, server.getRequestCount());
}
@Test
public void testProvideRequestInterceptors() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
RequestInterceptor requestInterceptor = new RequestInterceptor() {
@Override
public void apply(RequestTemplate template) {
template.header("Content-Type", "text/plain");
}
};
TestInterface api =
Feign.builder().requestInterceptor(requestInterceptor).target(TestInterface.class, url);
Response response = api.codecPost("request data");
assertEquals(Util.toString(response.body().asReader()), "response data");
assertThat(server.takeRequest())
.hasHeaders("Content-Type: text/plain")
.hasBody("request data");
}
@Test
public void testProvideInvocationHandlerFactory() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
final AtomicInteger callCount = new AtomicInteger();
InvocationHandlerFactory factory = new InvocationHandlerFactory() {
private final InvocationHandlerFactory delegate = new Default();
@Override
public InvocationHandler create(Target target, Map<Method, MethodHandler> dispatch) {
callCount.incrementAndGet();
return delegate.create(target, dispatch);
}
};
TestInterface api =
Feign.builder().invocationHandlerFactory(factory).target(TestInterface.class, url);
Response response = api.codecPost("request data");
assertEquals("response data", Util.toString(response.body().asReader()));
assertEquals(1, callCount.get());
assertThat(server.takeRequest())
.hasBody("request data");
}
@Test
public void testSlashIsEncodedInPathParams() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
TestInterface api = Feign.builder().target(TestInterface.class, url);
api.getQueues("/");
assertThat(server.takeRequest())
.hasPath("/api/queues/%2F");
}
@Test
public void testBasicDefaultMethod() throws Exception {
String url = "http://localhost:" + server.getPort();
TestInterface api = Feign.builder().target(TestInterface.class, url);
String result = api.independentDefaultMethod();
assertThat(result.equals("default result"));
}
@Test
public void testDefaultCallingProxiedMethod() throws Exception {
server.enqueue(new MockResponse().setBody("response data"));
String url = "http://localhost:" + server.getPort();
TestInterface api = Feign.builder().target(TestInterface.class, url);
Response response = api.defaultMethodPassthrough();
assertEquals("response data", Util.toString(response.body().asReader()));
assertThat(server.takeRequest()).hasPath("/");
}
interface TestInterface {
@RequestLine("GET")
Response getNoPath();
@RequestLine("GET api/thing")
Response getNoInitialSlashOnSlash();
@RequestLine("POST /")
Response codecPost(String data);
@RequestLine("POST /")
void encodedPost(List<String> data);
@RequestLine("POST /")
String decodedPost();
@RequestLine(value = "GET /api/queues/{vhost}", decodeSlash = false)
byte[] getQueues(@Param("vhost") String vhost);
default String independentDefaultMethod() {
return "default result";
}
default Response defaultMethodPassthrough() {
return getNoPath();
}
}
}