content: /**
   * Copyright (c) 2016-2018, the Alpha Team.
   * All rights reserved.
   * 
   * Additional changes made by Siemens.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   * 
   * 1) Redistributions of source code must retain the above copyright notice, this
   * list of conditions and the following disclaimer.
   * 
   * 2) Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package at.ac.tuwien.kr.alpha;
  
  import static at.ac.tuwien.kr.alpha.Main.main;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.util.Arrays;
  import java.util.stream.Stream;
  
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.Arguments;
  import org.junit.jupiter.params.provider.MethodSource;
  
  public class MainTest {
  	
  	private static final String INPUT = "p(a). " + System.lineSeparator() + " b :- p(X)." + System.lineSeparator();
  
  
  
  	
  	private static Stream<Arguments> provideCommandLineArguments() {
  		return Stream.of(
  				Arguments.of((Object) new String[]{"-DebugEnableInternalChecks", "-g", "naive", "-s", "default", "-e", "1119654162577372", "-n", "20", "-str", INPUT}),
  				Arguments.of((Object) new String[]{"-DebugEnableInternalChecks", "-g", "naive", "-s", "default", "-n", "0", "-str", INPUT}),
  				Arguments.of((Object) new String[]{"-DebugEnableInternalChecks", "-g", "naive", "-s", "default", "-n", "1", "-str", INPUT}),
  				Arguments.of((Object) new String[]{"-g", "naive", "-s", "default", "-r", "naive", "-e", "1119654162577372", "--numAS", "1", "-str", INPUT}));
  	}
  
  	/**
  	 * Temporarily redirects System.out while running the solver from the main entry point with the
  	 * given parameters.
  	 * Warning: this test is fragile and may require adaptions if printing is changed anywhere in Alpha.
  	 */
  	@ParameterizedTest
  	@MethodSource("provideCommandLineArguments")
  	public void test(String[] argv) {
  		PrintStream sysOut = System.out;
  		ByteArrayOutputStream newOut = new ByteArrayOutputStream();
  		System.setOut(new PrintStream(newOut));
  		main(argv);
  		System.setOut(sysOut);
  		assertTrue(newOut.toString().contains("{ b, p(a) }"));
  	}
  
  	@ParameterizedTest
  	@MethodSource("provideCommandLineArguments")
  	public void filterTest(String[] argv) {
  		PrintStream sysOut = System.out;
  		ByteArrayOutputStream newOut = new ByteArrayOutputStream();
  		System.setOut(new PrintStream(newOut));
  		String[] args = Arrays.copyOf(argv, argv.length + 2);
  		args[args.length - 2] = "-f";
  		args[args.length - 1] = "b";
  		main(args);
  		System.setOut(sysOut);
  		assertTrue(newOut.toString().contains("{ b }"));
  	}
  
  }
  