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BAEL-5776 - Mock a URL Connection in Java (#14184) 

* BAEL-4706 - Spring Boot with Spring Batch

* BAEL-3948 - Fix test(s) in spring-batch which leaves repository.sqlite
changed

* BAEL-4736 - Convert JSONArray to List of Object using camel-jackson

* BAEL-4756 - Mockito MockSettings

* BAEL-4756 - Mockito MockSettings - fix spelling

* BAEL-2674 - Upgrade the Okhttp article

* BAEL-4204 - Adding Interceptors in OkHTTP

* BAEL-4836 - Mocking Static Methods with Mockito

* BAEL-4205 - A Guide to Events in OkHTTP

* BAEL-5408 - Update Camel version in spring-boot-camel module

* BAEL-5234 - Apache Camel Routes Testing in Spring Boot

* BAEL-5234 - Apache Camel Routes Testing in Spring Boot

* BAEL-5237 - Apache Camel Conditional Routing

* BAEL-5236 - Apache Camel Exception Handling

* BAEL-5890 - Jackson's Deserialization with Lombok

* BAEL-5890 - Jackson's Deserialization with Lombok

* BAEL-5890 - Jackson's Deserialization with Lombok

* BAEL-5890 - Jackson's Deserialization with Lombok

* BAEL-5890 - Jackson's Deserialization with Lombok

* BAEL-5776 - Mock a URL Connection in Java

* BAEL-5776 - Mock a URL Connection in Java

---------

Co-authored-by: Jonathan Cook <jcook@sciops.esa.int>
Co-authored-by: jcook02 <jonathan.paul.cook@ext.esa.int>
This commit is contained in:
Jonathan Cook 2023-06-06 23:27:46 +02:00 committed by GitHub
parent 0d8db7af6a
commit a0d7405115
8 changed files with 244 additions and 0 deletions
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25
libraries-http-2/pom.xml
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@ -82,7 +82,31 @@
<artifactId>converter-gson</artifactId>
<version>${retrofit.version}</version>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-inline</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jmockit</groupId>
<artifactId>jmockit</artifactId>
<version>${jmockit.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>
-javaagent:${settings.localRepository}/org/jmockit/jmockit/${jmockit.version}/jmockit-${jmockit.version}.jar
</argLine>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<okhttp.version>4.9.1</okhttp.version>
@ -95,6 +119,7 @@
<spring.webflux.version>5.1.9.RELEASE</spring.webflux.version>
<reactive.stream.version>1.0.3</reactive.stream.version>
<reactor.version>3.2.12.RELEASE</reactor.version>
<jmockit.version>1.49</jmockit.version>
</properties>
</project>

23
libraries-http-2/src/main/java/com/baeldung/mock/url/UrlFetcher.java Normal file
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@ -0,0 +1,23 @@
package com.baeldung.mock.url;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
public class UrlFetcher {
private URL url;
public UrlFetcher(URL url) throws IOException {
this.url = url;
}
public boolean isUrlAvailable() throws IOException {
return getResponseCode() == HttpURLConnection.HTTP_OK;
}
private int getResponseCode() throws IOException {
HttpURLConnection con = (HttpURLConnection) this.url.openConnection();
return con.getResponseCode();
}
}

35
libraries-http-2/src/test/java/com/baeldung/mock/url/MockHttpURLConnection.java Normal file
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@ -0,0 +1,35 @@
package com.baeldung.mock.url;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
public class MockHttpURLConnection extends HttpURLConnection {
protected MockHttpURLConnection(URL url) {
super(url);
}
@Override
public int getResponseCode() {
return responseCode;
}
public void setResponseCode(int responseCode) {
this.responseCode = responseCode;
}
@Override
public void disconnect() {
}
@Override
public boolean usingProxy() {
return false;
}
@Override
public void connect() throws IOException {
}
}

21
libraries-http-2/src/test/java/com/baeldung/mock/url/MockURLStreamHandler.java Normal file
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@ -0,0 +1,21 @@
package com.baeldung.mock.url;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
public class MockURLStreamHandler extends URLStreamHandler {
private MockHttpURLConnection mockHttpURLConnection;
public MockURLStreamHandler(MockHttpURLConnection mockHttpURLConnection) {
this.mockHttpURLConnection = mockHttpURLConnection;
}
@Override
protected URLConnection openConnection(URL url) throws IOException {
return this.mockHttpURLConnection;
}
}

19
libraries-http-2/src/test/java/com/baeldung/mock/url/MockURLStreamHandlerFactory.java Normal file
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@ -0,0 +1,19 @@
package com.baeldung.mock.url;
import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;
public class MockURLStreamHandlerFactory implements URLStreamHandlerFactory {
private MockHttpURLConnection mockHttpURLConnection;
public MockURLStreamHandlerFactory(MockHttpURLConnection mockHttpURLConnection) {
this.mockHttpURLConnection = mockHttpURLConnection;
}
@Override
public URLStreamHandler createURLStreamHandler(String protocol) {
return new MockURLStreamHandler(this.mockHttpURLConnection);
}
}

42
libraries-http-2/src/test/java/com/baeldung/mock/url/UrlFetcherJMockitUnitTest.java Normal file
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@ -0,0 +1,42 @@
package com.baeldung.mock.url;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.net.HttpURLConnection;
import java.net.URL;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import mockit.Expectations;
import mockit.Mocked;
import mockit.integration.junit5.JMockitExtension;
@ExtendWith(JMockitExtension.class)
class UrlFetcherJMockitUnitTest {
@Test
void givenMockedUrl_whenRequestSent_thenIsUrlAvailableTrue(@Mocked URL anyURL, @Mocked HttpURLConnection mockConn) throws Exception {
new Expectations() {{
mockConn.getResponseCode();
result = HttpURLConnection.HTTP_OK;
}};
UrlFetcher fetcher = new UrlFetcher(new URL("https://www.baeldung.com/"));
assertTrue(fetcher.isUrlAvailable(), "Url should be available: ");
}
@Test
void givenMockedUrl_whenRequestSent_thenIsUrlAvailableFalse(@Mocked URL anyURL, @Mocked HttpURLConnection mockConn) throws Exception {
new Expectations() {{
mockConn.getResponseCode();
result = HttpURLConnection.HTTP_INTERNAL_ERROR;
}};
UrlFetcher fetcher = new UrlFetcher(new URL("https://www.baeldung.com/"));
assertFalse(fetcher.isUrlAvailable(), "Url should NOT be available: ");
}
}

39
libraries-http-2/src/test/java/com/baeldung/mock/url/UrlFetcherMockitoUnitTest.java Normal file
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@ -0,0 +1,39 @@
package com.baeldung.mock.url;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.net.HttpURLConnection;
import java.net.URL;
import org.junit.jupiter.api.Test;
class UrlFetcherMockitoUnitTest {
@Test
void givenMockedUrl_whenRequestSent_thenIsUrlAvailableTrue() throws Exception {
HttpURLConnection mockHttpURLConnection = mock(HttpURLConnection.class);
when(mockHttpURLConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_OK);
URL mockURL = mock(URL.class);
when(mockURL.openConnection()).thenReturn(mockHttpURLConnection);
UrlFetcher fetcher = new UrlFetcher(mockURL);
assertTrue(fetcher.isUrlAvailable(), "Url should be available: ");
}
@Test
void givenMockedUrl_whenRequestSent_thenIsUrlAvailableFalse() throws Exception {
HttpURLConnection mockHttpURLConnection = mock(HttpURLConnection.class);
when(mockHttpURLConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_NOT_FOUND);
URL mockURL = mock(URL.class);
when(mockURL.openConnection()).thenReturn(mockHttpURLConnection);
UrlFetcher fetcher = new UrlFetcher(mockURL);
assertFalse(fetcher.isUrlAvailable(), "Url should NOT be available: ");
}
}

40
libraries-http-2/src/test/java/com/baeldung/mock/url/UrlFetcherUnitTest.java Normal file
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@ -0,0 +1,40 @@
package com.baeldung.mock.url;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.net.HttpURLConnection;
import java.net.URL;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
class UrlFetcherUnitTest {
private static MockHttpURLConnection mockHttpURLConnection;
@BeforeAll
public static void setUp() {
mockHttpURLConnection = new MockHttpURLConnection(null);
URL.setURLStreamHandlerFactory(new MockURLStreamHandlerFactory(mockHttpURLConnection));
}
@Test
void givenMockedUrl_whenRequestSent_thenIsUrlAvailableTrue() throws Exception {
mockHttpURLConnection.setResponseCode(HttpURLConnection.HTTP_OK);
URL url = new URL("https://www.baeldung.com/");
UrlFetcher fetcher = new UrlFetcher(url);
assertTrue(fetcher.isUrlAvailable(), "Url should be available: ");
}
@Test
void givenMockedUrl_whenRequestSent_thenIsUrlAvailableFalse() throws Exception {
mockHttpURLConnection.setResponseCode(HttpURLConnection.HTTP_FORBIDDEN);
URL url = new URL("https://www.baeldung.com/");
UrlFetcher fetcher = new UrlFetcher(url);
assertFalse(fetcher.isUrlAvailable(), "Url should NOT be available: ");
}
}