Java example source code file (NamesTest.java)

This example Java source code file (NamesTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

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Java - Java tags/keywords

abstractmodule, calgary, edmonton, exception, injector, named, oilers, pats, properties, regina, sanjose, sharks, string, testcase, util

The NamesTest.java Java example source code

/**
 * 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.name;

import static com.google.inject.Asserts.assertEqualWhenReserialized;
import static com.google.inject.Asserts.assertEqualsBothWays;

import com.google.common.collect.ImmutableMap;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;

import junit.framework.TestCase;

import java.io.IOException;
import java.util.Map;
import java.util.Properties;

/**
 * @author jessewilson@google.com (Jesse Wilson)
 */
public class NamesTest extends TestCase {

  @Named("foo") private String foo;
  private Named namedFoo;
  
  protected void setUp() throws Exception {
    super.setUp();
    namedFoo = getClass().getDeclaredField("foo").getAnnotation(Named.class);
  }

  public void testConsistentEqualsAndHashcode() {
    Named actual = Names.named("foo");
    assertEqualsBothWays(namedFoo, actual);
    assertEquals(namedFoo.toString(), actual.toString());
  }

  public void testNamedIsSerializable() throws IOException {
    assertEqualWhenReserialized(Names.named("foo"));
  }

  public void testBindPropertiesUsingProperties() {
    final Properties teams = new Properties();
    teams.setProperty("SanJose", "Sharks");
    teams.setProperty("Edmonton", "Oilers");

    Injector injector = Guice.createInjector(new AbstractModule() {
      protected void configure() {
        Names.bindProperties(binder(), teams);
      }
    });

    assertEquals("Sharks", injector.getInstance(Key.get(String.class, Names.named("SanJose"))));
    assertEquals("Oilers", injector.getInstance(Key.get(String.class, Names.named("Edmonton"))));
  }

  public void testBindPropertiesUsingMap() {
    final Map<String, String> properties = ImmutableMap.of(
        "SanJose", "Sharks", "Edmonton", "Oilers");

    Injector injector = Guice.createInjector(new AbstractModule() {
      protected void configure() {
        Names.bindProperties(binder(), properties);
      }
    });

    assertEquals("Sharks", injector.getInstance(Key.get(String.class, Names.named("SanJose"))));
    assertEquals("Oilers", injector.getInstance(Key.get(String.class, Names.named("Edmonton"))));
  }

  public void testBindPropertiesIncludesInheritedProperties() {
    Properties defaults = new Properties();
    defaults.setProperty("Edmonton", "Eskimos");
    defaults.setProperty("Regina", "Pats");

    final Properties teams = new Properties(defaults);
    teams.setProperty("SanJose", "Sharks");
    teams.setProperty("Edmonton", "Oilers");

    Injector injector = Guice.createInjector(new AbstractModule() {
      protected void configure() {
        Names.bindProperties(binder(), teams);
      }
    });

    assertEquals("Pats", injector.getInstance(Key.get(String.class, Names.named("Regina"))));
    assertEquals("Oilers", injector.getInstance(Key.get(String.class, Names.named("Edmonton"))));
    assertEquals("Sharks", injector.getInstance(Key.get(String.class, Names.named("SanJose"))));

    try {
      injector.getInstance(Key.get(String.class, Names.named("Calgary")));
      fail();
    } catch (RuntimeException expected) {
    }
  }
}