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add missing file from test source of rxjava
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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.observables; | ||
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import rx.Notification; | ||
import rx.Observable; | ||
import rx.functions.Func1; | ||
import rx.functions.Func2; | ||
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public class AssertObservable { | ||
/** | ||
* Asserts that two Observables are equal. If they are not, an {@link AssertionError} is thrown | ||
* with the given message. If <code>expecteds</code> and <code>actuals</code> are | ||
* <code>null</code>, they are considered equal. | ||
* | ||
* @param expected | ||
* Observable with expected values. | ||
* @param actual | ||
* Observable with actual values | ||
*/ | ||
public static <T> void assertObservableEqualsBlocking(Observable<T> expected, Observable<T> actual) { | ||
assertObservableEqualsBlocking(null, expected, actual); | ||
} | ||
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/** | ||
* Asserts that two Observables are equal. If they are not, an {@link AssertionError} is thrown | ||
* with the given message. If <code>expected</code> and <code>actual</code> are | ||
* <code>null</code>, they are considered equal. | ||
* | ||
* @param message | ||
* the identifying message for the {@link AssertionError} (<code>null</code> okay) | ||
* @param expected | ||
* Observable with expected values. | ||
* @param actual | ||
* Observable with actual values | ||
*/ | ||
public static <T> void assertObservableEqualsBlocking(String message, Observable<T> expected, Observable<T> actual) { | ||
assertObservableEquals(expected, actual).toBlocking().lastOrDefault(null); | ||
} | ||
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/** | ||
* Asserts that two {@link Observable}s are equal and returns an empty {@link Observable}. If | ||
* they are not, an {@link Observable} is returned that calls onError with an {@link AssertionError} when subscribed to. If <code>expected</code> and <code>actual</code> | ||
* are <code>null</code>, they are considered equal. | ||
* | ||
* @param message | ||
* the identifying message for the {@link AssertionError} (<code>null</code> okay) | ||
* @param expected | ||
* Observable with expected values. | ||
* @param actual | ||
* Observable with actual values | ||
*/ | ||
public static <T> Observable<Void> assertObservableEquals(Observable<T> expected, Observable<T> actual) { | ||
return assertObservableEquals(null, expected, actual); | ||
} | ||
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/** | ||
* Asserts that two {@link Observable}s are equal and returns an empty {@link Observable}. If | ||
* they are not, an {@link Observable} is returned that calls onError with an {@link AssertionError} when subscribed to with the given message. If <code>expected</code> | ||
* and <code>actual</code> are <code>null</code>, they are considered equal. | ||
* | ||
* @param message | ||
* the identifying message for the {@link AssertionError} (<code>null</code> okay) | ||
* @param expected | ||
* Observable with expected values. | ||
* @param actual | ||
* Observable with actual values | ||
*/ | ||
public static <T> Observable<Void> assertObservableEquals(final String message, Observable<T> expected, Observable<T> actual) { | ||
if (actual == null && expected != null) { | ||
return Observable.error(new AssertionError((message != null ? message + ": " : "") + "Actual was null and expected was not")); | ||
} | ||
if (actual != null && expected == null) { | ||
return Observable.error(new AssertionError((message != null ? message + ": " : "") + "Expected was null and actual was not")); | ||
} | ||
if (actual == null && expected == null) { | ||
return Observable.empty(); | ||
} | ||
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Func2<? super Notification<T>, ? super Notification<T>, Notification<String>> zipFunction = new Func2<Notification<T>, Notification<T>, Notification<String>>() { | ||
@Override | ||
public Notification<String> call(Notification<T> expectedNotfication, Notification<T> actualNotification) { | ||
if (expectedNotfication.equals(actualNotification)) { | ||
StringBuilder message = new StringBuilder(); | ||
message.append(expectedNotfication.getKind()); | ||
if (expectedNotfication.hasValue()) | ||
message.append(" ").append(expectedNotfication.getValue()); | ||
if (expectedNotfication.hasThrowable()) | ||
message.append(" ").append(expectedNotfication.getThrowable()); | ||
return Notification.createOnNext("equals " + message.toString()); | ||
} | ||
else { | ||
StringBuilder error = new StringBuilder(); | ||
error.append("expected:<").append(expectedNotfication.getKind()); | ||
if (expectedNotfication.hasValue()) | ||
error.append(" ").append(expectedNotfication.getValue()); | ||
if (expectedNotfication.hasThrowable()) | ||
error.append(" ").append(expectedNotfication.getThrowable()); | ||
error.append("> but was:<").append(actualNotification.getKind()); | ||
if (actualNotification.hasValue()) | ||
error.append(" ").append(actualNotification.getValue()); | ||
if (actualNotification.hasThrowable()) | ||
error.append(" ").append(actualNotification.getThrowable()); | ||
error.append(">"); | ||
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return Notification.createOnError(new AssertionError(error.toString())); | ||
} | ||
} | ||
}; | ||
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Func2<Notification<String>, Notification<String>, Notification<String>> accumulator = new Func2<Notification<String>, Notification<String>, Notification<String>>() { | ||
@Override | ||
public Notification<String> call(Notification<String> a, Notification<String> b) { | ||
String message = a.isOnError() ? a.getThrowable().getMessage() : a.getValue(); | ||
boolean fail = a.isOnError(); | ||
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message += "\n\t" + (b.isOnError() ? b.getThrowable().getMessage() : b.getValue()); | ||
fail |= b.isOnError(); | ||
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if (fail) | ||
return Notification.createOnError(new AssertionError(message)); | ||
else | ||
return Notification.createOnNext(message); | ||
} | ||
}; | ||
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Observable<Void> outcomeObservable = Observable.zip(expected.materialize(), actual.materialize(), zipFunction).reduce(accumulator).map(new Func1<Notification<String>, Notification<Void>>() { | ||
@Override | ||
public Notification<Void> call(Notification<String> outcome) { | ||
if (outcome.isOnError()) { | ||
String fullMessage = (message != null ? message + ": " : "") + "Observables are different\n\t" + outcome.getThrowable().getMessage(); | ||
return Notification.createOnError(new AssertionError(fullMessage)); | ||
} | ||
return Notification.createOnCompleted(); | ||
} | ||
}).dematerialize(); | ||
return outcomeObservable; | ||
} | ||
} |
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