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/*
* Copyright (C) 2008 Google 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 com.google.inject;
import com.google.common.collect.ImmutableList;
import com.google.inject.spi.ElementSource;
import com.google.inject.util.Modules;
import java.util.Arrays;
import junit.framework.TestCase;
/** @author jessewilson@google.com (Jesse Wilson) */
public class ModulesTest extends TestCase {
public void testCombineVarargs() {
Module combined = Modules.combine(newModule(1), newModule(2L), newModule((short) 3));
Injector injector = Guice.createInjector(combined);
assertEquals(1, injector.getInstance(Integer.class).intValue());
assertEquals(2L, injector.getInstance(Long.class).longValue());
assertEquals(3, injector.getInstance(Short.class).shortValue());
}
public void testCombineIterable() {
Iterable<Module> modules = Arrays.asList(newModule(1), newModule(2L), newModule((short) 3));
Injector injector = Guice.createInjector(Modules.combine(modules));
assertEquals(1, injector.getInstance(Integer.class).intValue());
assertEquals(2, injector.getInstance(Long.class).longValue());
assertEquals(3, injector.getInstance(Short.class).shortValue());
}
/** The module returned by Modules.combine shouldn't show up in binder sources. */
public void testCombineSources() {
final Module m1 = newModule(1);
final Module m2 = newModule(2L);
final Module combined1 = Modules.combine(m1, m2);
Module skipSourcesModule =
new AbstractModule() {
@Override
protected void configure() {
install(combined1);
}
};
final Module combined2 = Modules.combine(skipSourcesModule); // returns skipSourcesModule
Injector injector = Guice.createInjector(combined2);
ElementSource source = (ElementSource) injector.getBinding(Integer.class).getSource();
assertEquals(3, source.getModuleClassNames().size());
assertEquals(
ImmutableList.of(
m1.getClass().getName(),
combined1.getClass().getName(),
skipSourcesModule.getClass().getName()),
source.getModuleClassNames());
StackTraceElement stackTraceElement = (StackTraceElement) source.getDeclaringSource();
assertEquals(skipSourcesModule.getClass().getName(), stackTraceElement.getClassName());
}
private <T> Module newModule(final T toBind) {
return new AbstractModule() {
@Override
protected void configure() {
@SuppressWarnings("unchecked") // getClass always needs a cast
Class<T> tClass = (Class<T>) toBind.getClass();
binder().skipSources(getClass()).bind(tClass).toInstance(toBind);
}
};
}
}
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