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DefaultContractTest.java
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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 com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import org.testng.annotations.Test;
import java.net.URI;
import javax.inject.Named;
import static feign.Util.CONTENT_TYPE;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertNull;
import static org.testng.Assert.assertTrue;
/**
* Tests interfaces defined per {@link feign.Contract.DefaultContract} are interpreted into expected {@link feign
* .RequestTemplate template}
* instances.
*/
@Test
public class DefaultContractTest {
Contract.DefaultContract contract = new Contract.DefaultContract();
interface Methods {
@RequestLine("POST /") void post();
@RequestLine("PUT /") void put();
@RequestLine("GET /") void get();
@RequestLine("DELETE /") void delete();
}
@Test public void httpMethods() throws Exception {
assertEquals(contract.parseAndValidatateMetadata(Methods.class.getDeclaredMethod("post")).template().method(),
"POST");
assertEquals(contract.parseAndValidatateMetadata(Methods.class.getDeclaredMethod("put")).template().method(),
"PUT");
assertEquals(contract.parseAndValidatateMetadata(Methods.class.getDeclaredMethod("get")).template().method(),
"GET");
assertEquals(contract.parseAndValidatateMetadata(Methods.class.getDeclaredMethod("delete")).template().method(),
"DELETE");
}
interface CustomMethodAndURIParam {
@RequestLine("PATCH") Response patch(URI nextLink);
}
@Test public void requestLineOnlyRequiresMethod() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(CustomMethodAndURIParam.class.getDeclaredMethod("patch",
URI.class));
assertEquals(md.template().method(), "PATCH");
assertEquals(md.template().url(), "");
assertTrue(md.template().queries().isEmpty());
assertTrue(md.template().headers().isEmpty());
assertNull(md.template().body());
assertNull(md.template().bodyTemplate());
assertEquals(md.urlIndex(), Integer.valueOf(0));
}
interface WithQueryParamsInPath {
@RequestLine("GET /") Response none();
@RequestLine("GET /?Action=GetUser") Response one();
@RequestLine("GET /?Action=GetUser&Version=2010-05-08") Response two();
@RequestLine("GET /?Action=GetUser&Version=2010-05-08&limit=1") Response three();
@RequestLine("GET /?flag&Action=GetUser&Version=2010-05-08") Response empty();
}
@Test public void queryParamsInPathExtract() throws Exception {
{
MethodMetadata md = contract.parseAndValidatateMetadata(WithQueryParamsInPath.class.getDeclaredMethod("none"));
assertEquals(md.template().url(), "/");
assertTrue(md.template().queries().isEmpty());
assertEquals(md.template().toString(), "GET / HTTP/1.1\n");
}
{
MethodMetadata md = contract.parseAndValidatateMetadata(WithQueryParamsInPath.class.getDeclaredMethod("one"));
assertEquals(md.template().url(), "/");
assertEquals(md.template().queries().get("Action"), ImmutableSet.of("GetUser"));
assertEquals(md.template().toString(), "GET /?Action=GetUser HTTP/1.1\n");
}
{
MethodMetadata md = contract.parseAndValidatateMetadata(WithQueryParamsInPath.class.getDeclaredMethod("two"));
assertEquals(md.template().url(), "/");
assertEquals(md.template().queries().get("Action"), ImmutableSet.of("GetUser"));
assertEquals(md.template().queries().get("Version"), ImmutableSet.of("2010-05-08"));
assertEquals(md.template().toString(), "GET /?Action=GetUser&Version=2010-05-08 HTTP/1.1\n");
}
{
MethodMetadata md = contract.parseAndValidatateMetadata(WithQueryParamsInPath.class.getDeclaredMethod("three"));
assertEquals(md.template().url(), "/");
assertEquals(md.template().queries().get("Action"), ImmutableSet.of("GetUser"));
assertEquals(md.template().queries().get("Version"), ImmutableSet.of("2010-05-08"));
assertEquals(md.template().queries().get("limit"), ImmutableSet.of("1"));
assertEquals(md.template().toString(), "GET /?Action=GetUser&Version=2010-05-08&limit=1 HTTP/1.1\n");
}
{
MethodMetadata md = contract.parseAndValidatateMetadata(WithQueryParamsInPath.class.getDeclaredMethod("empty"));
assertEquals(md.template().url(), "/");
assertTrue(md.template().queries().containsKey("flag"));
assertEquals(md.template().queries().get("Action"), ImmutableSet.of("GetUser"));
assertEquals(md.template().queries().get("Version"), ImmutableSet.of("2010-05-08"));
assertEquals(md.template().toString(), "GET /?flag&Action=GetUser&Version=2010-05-08 HTTP/1.1\n");
}
}
interface BodyWithoutParameters {
@RequestLine("POST /")
@Headers("Content-Type: application/xml")
@Body("<v01:getAccountsListOfUser/>") Response post();
}
@Test public void bodyWithoutParameters() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(BodyWithoutParameters.class.getDeclaredMethod("post"));
assertEquals(md.template().body(), "<v01:getAccountsListOfUser/>");
assertFalse(md.template().bodyTemplate() != null);
assertTrue(md.formParams().isEmpty());
assertTrue(md.indexToName().isEmpty());
}
@Test public void producesAddsContentTypeHeader() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(BodyWithoutParameters.class.getDeclaredMethod("post"));
assertEquals(md.template().headers().get(CONTENT_TYPE), ImmutableSet.of("application/xml"));
}
interface WithURIParam {
@RequestLine("GET /{1}/{2}") Response uriParam(@Named("1") String one, URI endpoint, @Named("2") String two);
}
@Test public void methodCanHaveUriParam() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(WithURIParam.class.getDeclaredMethod("uriParam", String.class,
URI.class, String.class));
assertEquals(md.urlIndex(), Integer.valueOf(1));
}
@Test public void pathParamsParseIntoIndexToName() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(WithURIParam.class.getDeclaredMethod("uriParam", String.class,
URI.class, String.class));
assertEquals(md.template().url(), "/{1}/{2}");
assertEquals(md.indexToName().get(0), ImmutableSet.of("1"));
assertEquals(md.indexToName().get(2), ImmutableSet.of("2"));
}
interface WithPathAndQueryParams {
@RequestLine("GET /domains/{domainId}/records?name={name}&type={type}")
Response recordsByNameAndType(@Named("domainId") int id, @Named("name") String nameFilter,
@Named("type") String typeFilter);
}
@Test public void mixedRequestLineParams() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(WithPathAndQueryParams.class.getDeclaredMethod
("recordsByNameAndType", int.class, String.class, String.class));
assertNull(md.template().body());
assertNull(md.template().bodyTemplate());
assertTrue(md.template().headers().isEmpty());
assertEquals(md.template().url(), "/domains/{domainId}/records");
assertEquals(md.template().queries().get("name"), ImmutableSet.of("{name}"));
assertEquals(md.template().queries().get("type"), ImmutableSet.of("{type}"));
assertEquals(md.indexToName().get(0), ImmutableSet.of("domainId"));
assertEquals(md.indexToName().get(1), ImmutableSet.of("name"));
assertEquals(md.indexToName().get(2), ImmutableSet.of("type"));
assertEquals(md.template().toString(), "GET /domains/{domainId}/records?name={name}&type={type} HTTP/1.1\n");
}
interface FormParams {
@RequestLine("POST /")
@Body("%7B\"customer_name\": \"{customer_name}\", \"user_name\": \"{user_name}\", \"password\": \"{password}\"%7D")
void login(
@Named("customer_name") String customer,
@Named("user_name") String user, @Named("password") String password);
}
@Test public void formParamsParseIntoIndexToName() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(FormParams.class.getDeclaredMethod("login", String.class,
String.class, String.class));
assertFalse(md.template().body() != null);
assertEquals(md.template().bodyTemplate(),
"%7B\"customer_name\": \"{customer_name}\", \"user_name\": \"{user_name}\", \"password\": \"{password}\"%7D");
assertEquals(md.formParams(), ImmutableList.of("customer_name", "user_name", "password"));
assertEquals(md.indexToName().get(0), ImmutableSet.of("customer_name"));
assertEquals(md.indexToName().get(1), ImmutableSet.of("user_name"));
assertEquals(md.indexToName().get(2), ImmutableSet.of("password"));
}
interface HeaderParams {
@RequestLine("POST /")
@Headers("Auth-Token: {Auth-Token}") void logout(@Named("Auth-Token") String token);
}
@Test public void headerParamsParseIntoIndexToName() throws Exception {
MethodMetadata md = contract.parseAndValidatateMetadata(HeaderParams.class.getDeclaredMethod("logout", String.class));
assertEquals(md.template().headers().get("Auth-Token"), ImmutableSet.of("{Auth-Token}"));
assertEquals(md.indexToName().get(0), ImmutableSet.of("Auth-Token"));
}
}