/*
 * 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 2012-2018 the original author or authors.
 */
package org.assertj.core.util;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.ArgumentMatchers.isA;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import java.io.PrintWriter;

import org.junit.Test;

/**
 * Tests for {@link Throwables#getStackTrace(Throwable)}.
 * 
 * @author Daniel Zlotin
 */
public class Throwables_getStackTrace_Test {

  @Test
  public void calls_printStackTrace_with_temp_PrintWriter() {
    final Throwable mock = mock(Throwable.class);
    Throwables.getStackTrace(mock);
    verify(mock, times(1)).printStackTrace(isA(PrintWriter.class));
  }

  @Test
  public void should_return_stacktrace_as_String() {
    final Throwable throwable = new Throwable("some message");
    assertThat(Throwables.getStackTrace(throwable)).isInstanceOf(String.class)
                                                   .contains("java.lang.Throwable: some message")
                                                   .containsPattern("\tat .*\\(Throwables_getStackTrace_Test.java:\\d");
  }

}
