/*
    * Copyright (C) 2009 The Guava Authors
    *
    * 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 com.google.common.html;
  
  import static com.google.common.html.HtmlEscapers.htmlEscaper;
  
  import com.google.common.annotations.GwtCompatible;
  
  import junit.framework.TestCase;
  
  /**
   * Tests for the {@link HtmlEscapers} class.
   *
   * @author David Beaumont
   */
  @GwtCompatible
  public class HtmlEscapersTest extends TestCase {
  
    public void testHtmlEscaper() throws Exception {
      assertEquals("xxx", htmlEscaper().escape("xxx"));
      assertEquals(""test"", htmlEscaper().escape("\"test\""));
      assertEquals("'test'", htmlEscaper().escape("\'test'"));
      assertEquals("test & test & test", htmlEscaper().escape("test & test & test"));
      assertEquals("test &lt;&lt; 1", htmlEscaper().escape("test << 1"));
      assertEquals("test &gt;&gt; 1", htmlEscaper().escape("test >> 1"));
      assertEquals("&lt;tab&gt;", htmlEscaper().escape("<tab>"));
  
      // Test simple escape of '&'.
      assertEquals("foo&amp;bar", htmlEscaper().escape("foo&bar"));
  
      // If the string contains no escapes, it should return the arg.
      // Note: assert<b>Same</b> for this implementation.
      String s = "blah blah farhvergnugen";
      assertSame(s, htmlEscaper().escape(s));
  
      // Tests escapes at begin and end of string.
      assertEquals("&lt;p&gt;", htmlEscaper().escape("<p>"));
  
      // Test all escapes.
      assertEquals("a&quot;b&lt;c&gt;d&amp;", htmlEscaper().escape("a\"b<c>d&"));
  
      // Test two escapes in a row.
      assertEquals("foo&amp;&amp;bar", htmlEscaper().escape("foo&&bar"));
  
      // Test many non-escaped characters.
      s = "!@#$%^*()_+=-/?\\|]}[{,.;:"
          + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
          + "1234567890";
      assertSame(s, htmlEscaper().escape(s));
    }
  }