ComparisonFailureFactory_comparisonFailure_withMocks_Test.java

/*
 * Created on Feb 15, 2008
 * 
 * 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 @2008-2013 the original author or authors.
 */
package org.fest.assertions;

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

import static org.fest.assertions.Mocks.createComparisonFailureFrom;
import static org.junit.Assert.assertNull;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

/**
 * Tests for {@link ComparisonFailureFactory#comparisonFailure(String, Object, Object)}.
 *
 * @author Alex Ruiz
 */
public class ComparisonFailureFactory_comparisonFailure_withMocks_Test {
  private ConstructorInvoker invoker;

  @Before
  public void setUp() {
    invoker = mock(ConstructorInvoker.class);
    ComparisonFailureFactory.constructorInvoker(invoker);
  }

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

  @Test
  public void should_return_null_if_created_Object_is_not_AssertionError() {
    when(createComparisonFailure()).thenReturn(new Object());
    AssertionError created = ComparisonFailureFactory.comparisonFailure("message", "expected", "actual");
    assertNull(created);
  }

  @Test
  public void should_return_null_if_call_to_constructor_throws_exception() {
    when(createComparisonFailure()).thenThrow(new RuntimeException());
    AssertionError created = ComparisonFailureFactory.comparisonFailure("message", "expected", "actual");
    assertNull(created);
  }

  private Object createComparisonFailure() {
    return createComparisonFailureFrom(invoker);
  }
}