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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 static com.google.inject.Asserts.assertContains;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import com.google.inject.internal.Annotations;
import java.lang.annotation.Annotation;
import java.lang.annotation.Retention;
import junit.framework.TestCase;
/** @author crazybob@google.com (Bob Lee) */
public class BindingAnnotationTest extends TestCase {
public void testAnnotationWithValueMatchesKeyWithTypeOnly() throws CreationException {
Injector c =
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bindConstant().annotatedWith(Blue.class).to("foo");
bind(BlueFoo.class);
}
});
BlueFoo foo = c.getInstance(BlueFoo.class);
assertEquals("foo", foo.s);
}
public void testRequireExactAnnotationsDisablesFallback() {
try {
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
binder().requireExactBindingAnnotations();
bindConstant().annotatedWith(Blue.class).to("foo");
bind(BlueFoo.class);
}
});
fail();
} catch (CreationException expected) {
assertContains(
expected.getMessage(),
true,
"No implementation for String annotated with",
"BindingAnnotationTest$Blue(" + Annotations.memberValueString("value", 5) + ") was bound",
"at BindingAnnotationTest$2.configure");
}
}
public void testRequireExactAnnotationsDoesntBreakIfDefaultsExist() {
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
binder().requireExactBindingAnnotations();
bindConstant().annotatedWith(Red.class).to("foo");
bind(RedFoo.class);
}
})
.getInstance(RedFoo.class);
}
public void testRequireExactAnnotationsRequireAllOptionals() {
try {
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
binder().requireExactBindingAnnotations();
bindConstant().annotatedWith(Color.class).to("foo");
bind(ColorFoo.class);
}
});
fail();
} catch (CreationException expected) {
assertContains(
expected.getMessage(),
true,
"No implementation for String annotated with",
"BindingAnnotationTest$Color",
"at BindingAnnotationTest$4.configure");
}
}
public void testAnnotationWithValueThatDoesntMatch() {
try {
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bindConstant().annotatedWith(createBlue(6)).to("six");
bind(String.class).toInstance("bar");
bind(BlueFoo.class);
}
});
fail();
} catch (CreationException expected) {
assertContains(
expected.getMessage(),
true,
"No implementation for String annotated with",
"BindingAnnotationTest$Blue(" + Annotations.memberValueString("value", 5) + ") was bound",
"at BindingAnnotationTest$5.configure");
}
}
static class BlueFoo {
@Inject
@Blue(5)
String s;
}
static class RedFoo {
@Inject @Red String s;
}
static class ColorFoo {
@Inject
@Color(b = 2)
String s;
}
@Retention(RUNTIME)
@BindingAnnotation
@interface Blue {
int value();
}
@Retention(RUNTIME)
@BindingAnnotation
@interface Red {
int r() default 42;
int g() default 42;
int b() default 42;
}
@Retention(RUNTIME)
@BindingAnnotation
@interface Color {
int r() default 0;
int g() default 0;
int b();
}
public Blue createBlue(final int value) {
return new Blue() {
@Override
public int value() {
return value;
}
@Override
public Class<? extends Annotation> annotationType() {
return Blue.class;
}
@Override
public boolean equals(Object o) {
return o instanceof Blue && ((Blue) o).value() == value;
}
@Override
public int hashCode() {
return 127 * "value".hashCode() ^ value;
}
};
}
}
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