package org.apache.maven.plugins.shade.resource;
   
   import java.io.ByteArrayInputStream;
   import java.io.IOException;
   import java.util.Collections;
   import java.util.List;
   
   import junit.framework.TestCase;
   
  
  /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  /**
   * Tests {@link ApacheLicenseResourceTransformer} parameters.
   */
  public class ApacheNoticeResourceTransformerParameterTests extends TestCase {
  	
  	private static final String NOTICE_RESOURCE = "META-INF/NOTICE";
  	private ApacheNoticeResourceTransformer subject;
  
  	protected void setUp() throws Exception {
  		super.setUp();
  		subject = new ApacheNoticeResourceTransformer();
  	}
  
  	
  	public void testNoParametersShouldNotThrowNullPointerWhenNoInput() throws IOException {
  		processAndFailOnNullPointer("");
  	}
  	
  	public void testNoParametersShouldNotThrowNullPointerWhenNoLinesOfInput() throws IOException {
  		processAndFailOnNullPointer("Some notice text");
  	}
  
  	public void testNoParametersShouldNotThrowNullPointerWhenOneLineOfInput() throws IOException {
  		processAndFailOnNullPointer("Some notice text\n");
  	}
  
  	public void testNoParametersShouldNotThrowNullPointerWhenTwoLinesOfInput() throws IOException {
  		processAndFailOnNullPointer("Some notice text\nSome notice text\n");
  	}
  
  	public void testNoParametersShouldNotThrowNullPointerWhenLineStartsWithSlashSlash() throws IOException {
  		processAndFailOnNullPointer("Some notice text\n//Some notice text\n");
  	}
  
  	public void testNoParametersShouldNotThrowNullPointerWhenLineIsSlashSlash() throws IOException {
  		processAndFailOnNullPointer("//\n");
  	}
  
  	public void testNoParametersShouldNotThrowNullPointerWhenLineIsEmpty() throws IOException {
  		processAndFailOnNullPointer("\n");
  	}
  	
  	private void processAndFailOnNullPointer(final String noticeText)
  			throws IOException {
  		try {
  			final ByteArrayInputStream noticeInputStream = new ByteArrayInputStream(noticeText.getBytes());
  			final List emptyList = Collections.EMPTY_LIST;
  			subject.processResource(NOTICE_RESOURCE, noticeInputStream, emptyList);
  		} catch (NullPointerException e) {
  			fail("Null pointer should not be thrown when no parameters are set.");
  		}
  	}
  }