br.com.objectos.way.assertion.AssertThat Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of assertion Show documentation

objectos assertion library

The newest version!

/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.way.assertion;

import java.util.List;

import br.com.objectos.way.assertion.ListAssertion;
import br.com.objectos.way.assertion.TestableAssertion;
import br.com.objectos.way.testable.Testable;

import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.StringDescription;

/**
 * @author [email protected] (Marcio Endo)
 */
public class AssertThat {

  private AssertThat() {
  }

  public static  ListAssertion assertThat(List subject) {
    return ListAssertion.assertThat(subject);
  }

  public static  TestableAssertion assertThat(Testable subject) {
    return TestableAssertion.assertThat(subject);
  }

  // hamcrest compatible API

  public static  void assertThat(T actual, Matcher matcher) {
    assertThat("", actual, matcher);
  }

  public static  void assertThat(String reason, T actual, Matcher matcher) {
    if (!matcher.matches(actual)) {
      Description description = new StringDescription();
      description.appendText(reason)
          .appendText("\nExpected: ")
          .appendDescriptionOf(matcher)
          .appendText("\n     but: ");
      matcher.describeMismatch(actual, description);

      throw new AssertionError(description.toString());
    }
  }

  public static void assertThat(String reason, boolean assertion) {
    if (!assertion) {
      throw new AssertionError(reason);
    }
  }

}