Fail_failIfNotEqual_withStubs_Test.java

/*
 * Created on Oct 27, 2009
 * 
 * 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.
 * 
 * Copyright @2009-2013 the original author or authors.
 */
package org.fest.assertions;

import org.junit.After;
import org.junit.Before;
import org.junit.ComparisonFailure;
import org.junit.Test;

import javax.annotation.Nonnull;

import static org.junit.Assert.*;

/**
 * Tests for {@link Fail#failIfNotEqual(String, Description, Object, Object)}.
 *
 * @author Alex Ruiz
 */
public class Fail_failIfNotEqual_withStubs_Test {
  private ConstructorInvoker invoker;

  @Before
  public void setUp() {
    invoker = new ConstructorInvoker() {
      @Override Object newInstance(
          @Nonnull String className, @Nonnull Class<?>[] parameterTypes, @Nonnull Object[] parameterValues) {
        // simulate that ComparisonFailure cannot be created (e.g. if JUnit is not in the classpath)
        return null;
      }
    };
    ComparisonFailureFactory.constructorInvoker(invoker);
  }

  @After
  public void tearDown() {
    ComparisonFailureFactory.constructorInvoker(new ConstructorInvoker());
  }

  @Test
  public void should_throw_AssertionError_when_failing_if_ComparisonFailure_is_not_available() {
    try {
      Fail.failIfNotEqual(null, new BasicDescription("message"), "expected", "actual");
      fail("Expecting AssertionError");
    } catch (AssertionError e) {
      assertFalse(e instanceof ComparisonFailure);
      assertEquals("[message] expected:<'actual'> but was:<'expected'>", e.getMessage());
    }
  }
}