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[JAVA-10431] Use Wiremock to fix intermittent test failures

This commit is contained in:
Haroon Khan 2022-04-04 20:21:24 +01:00
parent 9652c01402
commit 53421889e3
6 changed files with 72 additions and 33 deletions
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2
spring-cloud/pom.xml
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@ -46,7 +46,7 @@
<module>spring-cloud-circuit-breaker</module>
<module>spring-cloud-eureka-self-preservation</module>
<!-- <module>spring-cloud-openfeign</module> --> <!-- Fixing under JAVA-10446 -->
<!-- <module>spring-cloud-netflix-feign</module> --> <!-- Fixing under JAVA-10431 -->
<module>spring-cloud-netflix-feign</module>
<module>spring-cloud-sentinel</module>
<module>spring-cloud-dapr</module>
<module>spring-cloud-docker</module>

7
spring-cloud/spring-cloud-netflix-feign/pom.xml
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@ -51,13 +51,16 @@
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-contract-wiremock</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<spring-cloud.version>Camden.SR7</spring-cloud.version>
<feign-ok.version>8.18.0</feign-ok.version>
<!-- <spring-cloud.version>Hoxton.SR8</spring-cloud.version> -->
<!-- <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> -->
</properties>
</project>

4
spring-cloud/spring-cloud-netflix-feign/src/main/java/com/baeldung/cloud/netflix/feign/client/JSONPlaceHolderClient.java
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@ -11,7 +11,7 @@ import org.springframework.web.bind.annotation.RequestMethod;
import java.util.List;
@FeignClient(value = "jplaceholder",
url = "https://jsonplaceholder.typicode.com/",
url = "${external.api.url}",
configuration = ClientConfiguration.class,
fallback = JSONPlaceHolderFallback.class)
public interface JSONPlaceHolderClient {
@ -19,7 +19,7 @@ public interface JSONPlaceHolderClient {
@RequestMapping(method = RequestMethod.GET, value = "/posts")
List<Post> getPosts();
@RequestMapping(method = RequestMethod.GET, value = "/posts/{postId}", produces = "application/json")
Post getPostById(@PathVariable("postId") Long postId);
}

2
spring-cloud/spring-cloud-netflix-feign/src/main/resources/application.properties
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@ -1,3 +1,5 @@
spring.application.name=netflix-feign
logging.level.com.baeldung.cloud.netflix.feign.client=DEBUG
feign.hystrix.enabled=true
external.api.url=https://jsonplaceholder.typicode.com/

21
spring-cloud/spring-cloud-netflix-feign/src/test/java/com/baeldung/cloud/netflix/feign/ExampleTestApplication.java
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@ -1,21 +0,0 @@
package com.baeldung.cloud.netflix.feign;
import com.baeldung.cloud.netflix.feign.config.ClientConfiguration;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
@EnableAutoConfiguration
@ContextConfiguration(classes = { ClientConfiguration.class })
public class ExampleTestApplication {
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
}
}

69
spring-cloud/spring-cloud-netflix-feign/src/test/java/com/baeldung/cloud/netflix/feign/NetflixFeignUnitTest.java
View File

@ -2,42 +2,97 @@ package com.baeldung.cloud.netflix.feign;
import com.baeldung.cloud.netflix.feign.model.Post;
import com.baeldung.cloud.netflix.feign.service.JSONPlaceHolderService;
import com.github.tomakehurst.wiremock.client.ResponseDefinitionBuilder;
import com.github.tomakehurst.wiremock.client.WireMock;
import com.github.tomakehurst.wiremock.verification.LoggedRequest;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.contract.wiremock.AutoConfigureWireMock;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
import static org.junit.Assert.assertFalse;
import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
import static com.github.tomakehurst.wiremock.client.WireMock.exactly;
import static com.github.tomakehurst.wiremock.client.WireMock.get;
import static com.github.tomakehurst.wiremock.client.WireMock.getRequestedFor;
import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
import static com.github.tomakehurst.wiremock.client.WireMock.verify;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
@RunWith(SpringRunner.class)
@SpringBootTest
@SpringBootTest(properties = {"external.api.url=http://localhost:${wiremock.server.port}"})
@AutoConfigureWireMock(port = 0)
public class NetflixFeignUnitTest {
@Autowired
private JSONPlaceHolderService jsonPlaceHolderService;
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
@Before
public void setup() {
WireMock.reset();
}
@Test
public void whenGetPosts_thenListPostSizeGreaterThanZero() {
public void givenExternalApiAvailable_whenGetPosts_thenPostsReturned() {
WireMock.stubFor(get(urlEqualTo("/posts"))
.willReturn(okJson("[{ \"userId\": 1, \"id\": 1, \"title\": \"post 1 title\", \"body\": \"post 1 body\" }, "
+ "{ \"userId\": 1, \"id\": 2, \"title\": \"post 2 title\", \"body\": \"post 2 body\" }]")));
List<Post> posts = jsonPlaceHolderService.getPosts();
assertFalse(posts.isEmpty());
assertEquals(2, posts.size());
verify(exactly(1), getRequestedFor(urlEqualTo("/posts")));
}
@Test
public void whenGetPostWithId_thenPostExist() {
public void givenExternalApiUnavailable_whenGetPosts_thenEmpty() {
WireMock.stubFor(get(urlEqualTo("/posts"))
.willReturn(aResponse().withStatus(500)));
List<Post> posts = jsonPlaceHolderService.getPosts();
assertTrue(posts.isEmpty());
verify(exactly(1), getRequestedFor(urlEqualTo("/posts")));
}
@Test
public void givenExternalApiAvailable_whenGetPostWithId_thenPostExists() {
WireMock.stubFor(get(urlEqualTo("/posts/1"))
.willReturn(okJson("{ \"userId\": 1, \"id\": 1, \"title\": \"post 1 title\", \"body\": \"post 1 body\" }")));
Post post = jsonPlaceHolderService.getPostById(1L);
assertNotNull(post);
verify(exactly(1), getRequestedFor(urlEqualTo("/posts/1")));
}
@Test
public void givenExternalApiUnavailable_whenGetPostWithId_thenNull() {
WireMock.stubFor(get(urlEqualTo("/posts/1"))
.willReturn(aResponse().withStatus(500)));
Post post = jsonPlaceHolderService.getPostById(1L);
assertNull(post);
verify(exactly(1), getRequestedFor(urlEqualTo("/posts/1")));
}
private static ResponseDefinitionBuilder okJson(String json) {
return aResponse()
.withHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.withBody(json);
}
}