DoubleArrayAssert_isEqualTo_withDelta_Test.java

/*
 * Created on Feb 14, 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.fest.test.ExpectedException;
import org.junit.BeforeClass;
import org.junit.Rule;
import org.junit.Test;

import static org.fest.assertions.ArrayFactory.doubleArray;
import static org.fest.assertions.Delta.delta;
import static org.fest.test.ExpectedException.none;

/**
 * Tests for {@link DoubleArrayAssert#isEqualTo(double[], Delta)}.
 *
 * @author Yvonne Wang
 * @author Alex Ruiz
 */
public class DoubleArrayAssert_isEqualTo_withDelta_Test {
  @Rule
  public ExpectedException thrown = none();

  private static double[] array;

  @BeforeClass
  public static void setUpOnce() {
    array = doubleArray(55.03, 4345.91);
  }

  @Test
  public void should_pass_if_actual_and_expected_are_equal_using_delta() {
    new DoubleArrayAssert(array).isEqualTo(doubleArray(55.00, 4345.0), delta(1.0));
  }

  @Test
  public void should_pass_if_actual_and_expected_are_exactly_equal() {
    new DoubleArrayAssert(array).isEqualTo(doubleArray(55.03, 4345.91), delta(1.0));
  }

  @Test
  public void should_pass_if_actual_is_same_as_expected() {
    new DoubleArrayAssert(array).isEqualTo(array, delta(0.0));
  }

  @Test
  public void should_pass_if_both_actual_and_expected_are_null() {
    new DoubleArrayAssert(null).isEqualTo(null);
  }

  @Test
  public void should_fail_if_expected_is_null() {
    thrown.expect(AssertionError.class, "expected:<null> but was:<[55.03, 4345.91]> using delta:<0.1>");
    new DoubleArrayAssert(array).isEqualTo(null, delta(0.1));
  }

  @Test
  public void should_fail_and_display_description_if_expected_is_null() {
    thrown.expect(AssertionError.class, "[A Test] expected:<null> but was:<[55.03, 4345.91]> using delta:<0.1>");
    new DoubleArrayAssert(array).as("A Test").isEqualTo(null, delta(0.1));
  }

  @Test
  public void should_fail_with_custom_message_if_expected_is_null() {
    thrown.expect(AssertionError.class, "My custom message");
    new DoubleArrayAssert(array).overridingErrorMessage("My custom message").isEqualTo(null, delta(0.1));
  }

  @Test
  public void should_fail_with_custom_message_ignoring_description_if_expected_is_null() {
    thrown.expect(AssertionError.class, "My custom message");
    new DoubleArrayAssert(array).as("A Test").overridingErrorMessage("My custom message").isEqualTo(null, delta(0.1));
  }

  @Test
  public void should_fail_if_arrays_do_not_have_equal_size() {
    thrown.expect(AssertionError.class, "expected:<[5323.2]> but was:<[55.03, 4345.91]> using delta:<0.1>");
    new DoubleArrayAssert(array).isEqualTo(doubleArray(5323.2), delta(0.1));
  }

  @Test
  public void should_fail_and_display_description_if_arrays_do_not_have_equal_size() {
    thrown.expect(AssertionError.class, "[A Test] expected:<[5323.2]> but was:<[55.03, 4345.91]> using delta:<0.1>");
    new DoubleArrayAssert(array).as("A Test").isEqualTo(doubleArray(5323.2), delta(0.1));
  }

  @Test
  public void should_fail_with_custom_message_if_arrays_do_not_have_equal_size() {
    thrown.expect(AssertionError.class, "My custom message");
    new DoubleArrayAssert(array).overridingErrorMessage("My custom message").isEqualTo(doubleArray(5323.2), delta(0.1));
  }

  @Test
  public void should_fail_with_custom_message_ignoring_description_if_arrays_do_not_have_equal_size() {
    thrown.expect(AssertionError.class, "My custom message");
    new DoubleArrayAssert(array).as("A Test").overridingErrorMessage("My custom message")
        .isEqualTo(doubleArray(5323.2), delta(0.1));
  }

  @Test
  public void should_fail_if_actual_and_expected_are_not_equal() {
    thrown.expect(AssertionError.class, "expected:<[55.0, 4345.0]> but was:<[55.03, 4345.91]> using delta:<0.1>");
    new DoubleArrayAssert(array).isEqualTo(doubleArray(55.0, 4345.0), delta(0.1));
  }

  @Test
  public void should_fail_and_display_description_if_actual_and_expected_are_not_equal() {
    thrown.expect(AssertionError.class, "[A Test] expected:<[55.0, 4345.0]> but was:<[55.03, 4345.91]> using delta:<0.1>");
    new DoubleArrayAssert(array).as("A Test").isEqualTo(doubleArray(55.0, 4345.0), delta(0.1));
  }

  @Test
  public void should_fail_with_custom_message_if_actual_and_expected_are_not_equal() {
    thrown.expect(AssertionError.class, "My custom message");
    new DoubleArrayAssert(array).overridingErrorMessage("My custom message").isEqualTo(doubleArray(55.0, 4345.0),
        delta(0.1));
  }

  @Test
  public void should_fail_with_custom_message_ignoring_description_if_actual_and_expected_are_not_equal() {
    thrown.expect(AssertionError.class, "My custom message");
    new DoubleArrayAssert(array).as("A Test").overridingErrorMessage("My custom message")
        .isEqualTo(doubleArray(55.0, 4345.0), delta(0.1));
  }
}