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/*
* Copyright (C) 2006 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 junit.framework.TestCase;
/** @author crazybob@google.com (Bob Lee) */
public class BoundProviderTest extends TestCase {
public void testFooProvider() throws CreationException {
Injector injector =
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bind(Foo.class).toProvider(FooProvider.class);
}
});
Foo a = injector.getInstance(Foo.class);
Foo b = injector.getInstance(Foo.class);
assertEquals(0, a.i);
assertEquals(0, b.i);
assertNotNull(a.bar);
assertNotNull(b.bar);
assertNotSame(a.bar, b.bar);
}
public void testSingletonFooProvider() throws CreationException {
Injector injector =
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bind(Foo.class).toProvider(SingletonFooProvider.class);
}
});
Foo a = injector.getInstance(Foo.class);
Foo b = injector.getInstance(Foo.class);
assertEquals(0, a.i);
assertEquals(1, b.i);
assertNotNull(a.bar);
assertNotNull(b.bar);
assertSame(a.bar, b.bar);
}
static class Bar {}
static class Foo {
final Bar bar;
final int i;
Foo(Bar bar, int i) {
this.bar = bar;
this.i = i;
}
}
static class FooProvider implements Provider<Foo> {
final Bar bar;
int count = 0;
@Inject
public FooProvider(Bar bar) {
this.bar = bar;
}
@Override
public Foo get() {
return new Foo(this.bar, count++);
}
}
@Singleton
static class SingletonFooProvider implements Provider<Foo> {
final Bar bar;
int count = 0;
@Inject
public SingletonFooProvider(Bar bar) {
this.bar = bar;
}
@Override
public Foo get() {
return new Foo(this.bar, count++);
}
}
}
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