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/****************************************************************************
* Sangria *
* Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com> *
* *
* 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.tavianator.sangria.listbinder;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.*;
import javax.inject.Provider;
import javax.inject.Qualifier;
import com.google.inject.AbstractModule;
import com.google.inject.CreationException;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.TypeLiteral;
import com.google.inject.name.Names;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import com.tavianator.sangria.core.TypeLiterals;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
/**
* Tests for {@link ListBinder}.
*
* @author Tavian Barnes (tavianator@tavianator.com)
* @version 1.1
* @since 1.1
*/
public class ListBinderTest {
public @Rule ExpectedException thrown = ExpectedException.none();
@Retention(RetentionPolicy.RUNTIME)
@Qualifier
private @interface Simple {
}
private static final TypeLiteral<List<String>> LIST_OF_STRINGS = TypeLiterals.listOf(String.class);
private static final TypeLiteral<List<Provider<String>>> LIST_OF_STRING_PROVIDERS = TypeLiterals.listOf(TypeLiterals.providerOf(String.class));
@Test
public void testBasicLists() {
Injector injector = Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
ListBinder<String> listBinder = ListBinder.build(binder(), String.class)
.withDefaultPriority();
listBinder.addBinding().toInstance("a");
listBinder.addBinding().toInstance("b");
listBinder.addBinding().toInstance("c");
listBinder = ListBinder.build(binder(), String.class)
.annotatedWith(Simple.class)
.withDefaultPriority();
listBinder.addBinding().toInstance("d");
listBinder.addBinding().toInstance("e");
listBinder.addBinding().toInstance("f");
listBinder = ListBinder.build(binder(), String.class)
.annotatedWith(Names.named("name"))
.withDefaultPriority();
listBinder.addBinding().toInstance("g");
listBinder.addBinding().toInstance("h");
listBinder.addBinding().toInstance("i");
}
});
List<String> list = injector.getInstance(Key.get(LIST_OF_STRINGS));
assertThat(list, contains("a", "b", "c"));
List<Provider<String>> providers = injector.getInstance(Key.get(LIST_OF_STRING_PROVIDERS));
assertThat(providers, hasSize(3));
assertThat(providers.get(0).get(), equalTo("a"));
assertThat(providers.get(1).get(), equalTo("b"));
assertThat(providers.get(2).get(), equalTo("c"));
list = injector.getInstance(Key.get(LIST_OF_STRINGS, Simple.class));
assertThat(list, contains("d", "e", "f"));
list = injector.getInstance(Key.get(LIST_OF_STRINGS, Names.named("name")));
assertThat(list, contains("g", "h", "i"));
}
@Test
public void testSplitBinders() {
Injector injector = Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
ListBinder<String> listBinder = ListBinder.build(binder(), String.class)
.withPriority(1);
listBinder.addBinding().toInstance("c");
listBinder.addBinding().toInstance("d");
}
}, new AbstractModule() {
@Override
protected void configure() {
ListBinder<String> listBinder = ListBinder.build(binder(), String.class)
.withPriority(0);
listBinder.addBinding().toInstance("a");
listBinder.addBinding().toInstance("b");
}
});
List<String> list = injector.getInstance(Key.get(LIST_OF_STRINGS));
assertThat(list, contains("a", "b", "c", "d"));
}
@Test
public void testConflictingDefaultPriorities() {
thrown.expect(CreationException.class);
thrown.expectMessage(containsString("2 errors"));
thrown.expectMessage(containsString("1) Duplicate ListBinder<java.lang.String> with default priority"));
thrown.expectMessage(containsString("2) Duplicate ListBinder<java.lang.String> with default priority"));
thrown.expectMessage(containsString("at com.tavianator.sangria.listbinder.ListBinderTest"));
Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
ListBinder.build(binder(), String.class)
.withDefaultPriority();
}
}, new AbstractModule() {
@Override
protected void configure() {
ListBinder.build(binder(), String.class)
.withDefaultPriority();
}
});
}
@Test
public void testConflictingExplicitPriorities() {
thrown.expect(CreationException.class);
thrown.expectMessage(containsString("2 errors"));
thrown.expectMessage(containsString("1) Duplicate ListBinder<java.lang.String> with priority [1]"));
thrown.expectMessage(containsString("2) Duplicate ListBinder<java.lang.String> with priority [1]"));
thrown.expectMessage(containsString("at com.tavianator.sangria.listbinder.ListBinderTest"));
Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
ListBinder.build(binder(), String.class)
.withPriority(1);
}
}, new AbstractModule() {
@Override
protected void configure() {
ListBinder.build(binder(), String.class)
.withPriority(1);
}
});
}
@Test
public void testConflictingDefaultAndExplicitPriorities() {
thrown.expect(CreationException.class);
thrown.expectMessage(containsString("2 errors"));
thrown.expectMessage(containsString(") ListBinder<java.lang.String> with default priority conflicts with ListBinder with explicit priority"));
thrown.expectMessage(containsString(") ListBinder<java.lang.String> with priority [1] conflicts with ListBinder with default priority"));
thrown.expectMessage(containsString("at com.tavianator.sangria.listbinder.ListBinderTest"));
Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
ListBinder.build(binder(), String.class)
.withDefaultPriority();
}
}, new AbstractModule() {
@Override
protected void configure() {
ListBinder.build(binder(), String.class)
.withPriority(1);
}
});
}
@Test
public void testToString() {
Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
ListBinder<String> listBinder = ListBinder.build(binder(), String.class)
.annotatedWith(Names.named("name"))
.withDefaultPriority();
assertThat(listBinder.toString(), equalTo("ListBinder<java.lang.String> annotated with @com.google.inject.name.Named(value=name) with default priority"));
ListBinder<Object> objectListBinder = ListBinder.build(binder(), Object.class)
.withPriority(1, 2);
assertThat(objectListBinder.toString(), equalTo("ListBinder<java.lang.Object> with priority [1, 2]"));
}
});
}
}
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