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RxJavaPluginsTest.java
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254 lines (213 loc) · 9.27 KB
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/**
* Copyright 2014 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 rx.plugins;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.concurrent.TimeUnit;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import rx.Observable;
import rx.Subscriber;
import rx.exceptions.OnErrorThrowable;
import rx.functions.Func1;
public class RxJavaPluginsTest {
@Before
public void resetBefore() {
RxJavaPlugins.getInstance().reset();
}
@After
public void resetAfter() {
RxJavaPlugins.getInstance().reset();
}
@Test
public void testErrorHandlerDefaultImpl() {
RxJavaErrorHandler impl = new RxJavaPlugins().getErrorHandler();
assertSame(RxJavaPlugins.DEFAULT_ERROR_HANDLER, impl);
}
@Test
public void testErrorHandlerViaRegisterMethod() {
RxJavaPlugins p = new RxJavaPlugins();
p.registerErrorHandler(new RxJavaErrorHandlerTestImpl());
RxJavaErrorHandler impl = p.getErrorHandler();
assertTrue(impl instanceof RxJavaErrorHandlerTestImpl);
}
@Test
public void testErrorHandlerViaProperty() {
try {
RxJavaPlugins p = new RxJavaPlugins();
String fullClass = getFullClassNameForTestClass(RxJavaErrorHandlerTestImpl.class);
System.setProperty("rxjava.plugin.RxJavaErrorHandler.implementation", fullClass);
RxJavaErrorHandler impl = p.getErrorHandler();
assertTrue(impl instanceof RxJavaErrorHandlerTestImpl);
} finally {
System.clearProperty("rxjava.plugin.RxJavaErrorHandler.implementation");
}
}
// inside test so it is stripped from Javadocs
public static class RxJavaErrorHandlerTestImpl extends RxJavaErrorHandler {
private volatile Throwable e;
private volatile int count = 0;
@Override
public void handleError(Throwable e) {
e.printStackTrace();
this.e = e;
count++;
}
}
public static class RxJavaErrorHandlerTestImplWithRender extends RxJavaErrorHandler {
@Override
protected String render(Object item) {
if (item instanceof Calendar) {
throw new IllegalArgumentException("calendar");
} else if (item instanceof Date) {
return String.valueOf(((Date) item).getTime());
}
return null;
}
}
@Test
public void testObservableExecutionHookDefaultImpl() {
RxJavaPlugins p = new RxJavaPlugins();
RxJavaObservableExecutionHook impl = p.getObservableExecutionHook();
assertTrue(impl instanceof RxJavaObservableExecutionHookDefault);
}
@Test
public void testObservableExecutionHookViaRegisterMethod() {
RxJavaPlugins p = new RxJavaPlugins();
p.registerObservableExecutionHook(new RxJavaObservableExecutionHookTestImpl());
RxJavaObservableExecutionHook impl = p.getObservableExecutionHook();
assertTrue(impl instanceof RxJavaObservableExecutionHookTestImpl);
}
@Test
public void testObservableExecutionHookViaProperty() {
try {
RxJavaPlugins p = new RxJavaPlugins();
String fullClass = getFullClassNameForTestClass(RxJavaObservableExecutionHookTestImpl.class);
System.setProperty("rxjava.plugin.RxJavaObservableExecutionHook.implementation", fullClass);
RxJavaObservableExecutionHook impl = p.getObservableExecutionHook();
assertTrue(impl instanceof RxJavaObservableExecutionHookTestImpl);
} finally {
System.clearProperty("rxjava.plugin.RxJavaObservableExecutionHook.implementation");
}
}
@Test
public void testOnErrorWhenImplementedViaSubscribe() {
RxJavaErrorHandlerTestImpl errorHandler = new RxJavaErrorHandlerTestImpl();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
RuntimeException re = new RuntimeException("test onError");
Observable.error(re).subscribe(new Subscriber<Object>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
}
@Override
public void onNext(Object args) {
}
});
assertEquals(re, errorHandler.e);
assertEquals(1, errorHandler.count);
}
@Test
public void testOnErrorWhenNotImplemented() {
RxJavaErrorHandlerTestImpl errorHandler = new RxJavaErrorHandlerTestImpl();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
RuntimeException re = new RuntimeException("test onError");
try {
Observable.error(re).subscribe();
fail("should fail");
} catch (Throwable e) {
// ignore as we expect it to throw
}
assertEquals(re, errorHandler.e);
assertEquals(1, errorHandler.count);
}
@Test
public void testOnNextValueRenderingWhenNotImplemented() {
RxJavaErrorHandlerTestImpl errorHandler = new RxJavaErrorHandlerTestImpl();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
String rendering = RxJavaPlugins.getInstance().getErrorHandler().handleOnNextValueRendering(new Date());
assertNull(rendering);
}
@Test
public void testOnNextValueRenderingWhenImplementedAndNotManaged() {
RxJavaErrorHandlerTestImplWithRender errorHandler = new RxJavaErrorHandlerTestImplWithRender();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
String rendering = RxJavaPlugins.getInstance().getErrorHandler().handleOnNextValueRendering(
Collections.emptyList());
assertNull(rendering);
}
@Test
public void testOnNextValueRenderingWhenImplementedAndManaged() {
RxJavaErrorHandlerTestImplWithRender errorHandler = new RxJavaErrorHandlerTestImplWithRender();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
long time = 1234L;
Date date = new Date(time);
String rendering = RxJavaPlugins.getInstance().getErrorHandler().handleOnNextValueRendering(date);
assertNotNull(rendering);
assertEquals(String.valueOf(time), rendering);
}
@Test
public void testOnNextValueRenderingWhenImplementedAndThrows() {
RxJavaErrorHandlerTestImplWithRender errorHandler = new RxJavaErrorHandlerTestImplWithRender();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
Calendar cal = Calendar.getInstance();
String rendering = RxJavaPlugins.getInstance().getErrorHandler().handleOnNextValueRendering(cal);
assertNotNull(rendering);
assertEquals(cal.getClass().getName() + RxJavaErrorHandler.ERROR_IN_RENDERING_SUFFIX, rendering);
}
@Test
public void testOnNextValueCallsPlugin() {
RxJavaErrorHandlerTestImplWithRender errorHandler = new RxJavaErrorHandlerTestImplWithRender();
RxJavaPlugins.getInstance().registerErrorHandler(errorHandler);
long time = 456L;
Date date = new Date(time);
try {
Date notExpected = Observable.just(date)
.map(new Func1<Date, Date>() {
@Override
public Date call(Date date) {
throw new IllegalStateException("Trigger OnNextValue");
}
})
.timeout(500, TimeUnit.MILLISECONDS)
.toBlocking().first();
fail("Did not expect onNext/onCompleted, got " + notExpected);
} catch (IllegalStateException e) {
assertEquals("Trigger OnNextValue", e.getMessage());
assertNotNull(e.getCause());
assertTrue(e.getCause() instanceof OnErrorThrowable.OnNextValue);
assertEquals("OnError while emitting onNext value: " + time, e.getCause().getMessage());
}
}
// inside test so it is stripped from Javadocs
public static class RxJavaObservableExecutionHookTestImpl extends RxJavaObservableExecutionHook {
// just use defaults
}
private static String getFullClassNameForTestClass(Class<?> cls) {
return RxJavaPlugins.class.getPackage()
.getName() + "." + RxJavaPluginsTest.class.getSimpleName() + "$" + cls.getSimpleName();
}
}