NumberAssert_isZero_TestCase.java

/*
 * Created on Oct 1, 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.fest.test.ExpectedException;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

import static org.fest.assertions.FailureMessages.actualIsNull;
import static org.fest.assertions.FailureMessages.notEqual;
import static org.fest.test.ExpectedException.none;

/**
 * Test case for implementations of {@link NumberAssert#isZero()}.
 *
 * @param <T> The type supported by the implementation of the {@code NumberAssert} to test.
 * @author Alex Ruiz
 */
public abstract class NumberAssert_isZero_TestCase<T extends Number> {
  // TODO make NumberAssert a subclass of ComparableAssert
  @Rule
  public ExpectedException thrown = none();

  private T notZero;
  private T zero;
  private NumberAssert assertions;

  @Before
  public final void setUp() {
    notZero = notZero();
    zero = zero();
    assertions = assertionsFor(notZero);
  }

  protected abstract T notZero();

  protected abstract T zero();

  protected abstract NumberAssert assertionsFor(T actual);

  @Test
  public final void should_pass_if_actual_is_zero() {
    assertionsFor(zero).isZero();
  }

  @Test
  public final void should_fail_if_actual_is_null() {
    thrown.expect(AssertionError.class, actualIsNull());
    new BigDecimalAssert(null).isZero();
  }

  // @Test
  // public final void should_fail_and_display_description_if_actual_is_null() {
  // thrown.expect(AssertionError.class, actualIsNull("A Test"));
  // public void run() {
  // assertionsFor(null).as("A Test")
  // .isZero();
  // }
  // });
  // }

  @Test
  public final void should_fail_if_actual_is_not_zero() {
    thrown.expect(AssertionError.class, notEqual(notZero, zero));
    assertions.isZero();
  }
  //
  // @Test
  // public final void should_fail_and_display_description_if_actual_is_not_zero() {
  // thrown.expect(AssertionError.class, "[A Test] expected:<0> but was:<8.0>");
  // public void run() {
  // assertions.as("A Test")
  // .isZero();
  // }
  // });
  // }
  //
  // @Test
  // public final void should_fail_with_custom_message_if_actual_is_not_zero() {
  // thrown.expect(AssertionError.class, "My custom message");
  // public void run() {
  // assertions.overridingErrorMessage("My custom message")
  // .isZero();
  // }
  // });
  // }
  //
  // @Test
  // public final void should_fail_with_custom_message_ignoring_description_if_actual_is_not_zero() {
  // thrown.expect(AssertionError.class, "My custom message");
  // public void run() {
  // assertions.as("A Test")
  // .overridingErrorMessage("My custom message")
  // .isZero();
  // }
  // });
  // }
}