/*
 * Copyright 2002-2019 Igor Maznitsa (http://www.igormaznitsa.com)
 *
 * 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.
 */

package com.igormaznitsa.jcp.removers;

import static org.junit.Assert.assertEquals;


import java.io.StringReader;
import java.io.StringWriter;
import org.junit.Test;

public class JavaCommentsRemoverTest {

  @Test
  public void testRemovingSingleStringComments() throws Exception {
    final String SRC = "class main() {\n// hello world\nSystem.out.println(\"hello // world\");// a comment\n}";
    final String DST = "class main() {\n\nSystem.out.println(\"hello // world\");\n}";

    final StringReader reader = new StringReader(SRC);
    final StringWriter writer = new StringWriter(256);

    new JavaCommentsRemover(reader, writer).process();

    assertEquals("Must be the same", DST, writer.toString());
  }

  @Test
  public void testMultilineStringComments() throws Exception {
    final String SRC = "class main() {/**\ntest\n*/\n\n// hello world\nSystem.out.println(\"hello /*ooo*/ world\");/* a comment*/\n/*  aslajdhkajhdkqwiueyoqiweuoqwueoqwiue}";
    final String DST = "class main() {\n\n\nSystem.out.println(\"hello /*ooo*/ world\");\n";

    final StringReader reader = new StringReader(SRC);
    final StringWriter writer = new StringWriter(256);

    new JavaCommentsRemover(reader, writer).process();

    assertEquals("Must be the same", DST, writer.toString());
  }

  @Test
  public void testMultipleStarsAtComments() throws Exception {
    final String SRC = "class main() {/**\ntest\n**/\n\n// hello world\nSystem.out.println(/**** some *** comment** ***/\"hello /*ooo*/ world\"/**** some *** comment*/);/* a comment*/\n/*  aslajdhkajhdkqwiueyoqiweuoqwueoqwiue}";
    final String DST = "class main() {\n\n\nSystem.out.println(\"hello /*ooo*/ world\");\n";
    final StringReader reader = new StringReader(SRC);
    final StringWriter writer = new StringWriter(256);

    new JavaCommentsRemover(reader, writer).process();

    assertEquals("Must be the same", DST, writer.toString());
  }

  @Test
  public void testTabulation() throws Exception {
    final String SRC = "\thello world();//test";
    final String DST = "\thello world();";

    final StringReader reader = new StringReader(SRC);
    final StringWriter writer = new StringWriter(256);

    new JavaCommentsRemover(reader, writer).process();

    assertEquals("Must be the same", DST, writer.toString());
  }
}
