CajaCssParserTest.java

/*
 * 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 org.apache.shindig.gadgets.parse.caja;

import com.google.caja.parser.css.CssTree;

import org.apache.shindig.common.cache.LruCacheProvider;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.util.List;

/**
 * Basic CSS parse tests
 */
public class CajaCssParserTest extends Assert {

  private CajaCssParser cajaCssParser;

  @Before
  public void setUp() throws Exception {
    cajaCssParser = new CajaCssParser();
    cajaCssParser.setCacheProvider(new LruCacheProvider(10));
  }

  @Test
  public void testBasicCssParse() throws Exception {
    String css = ".xyz { font : bold; } A { color : #7f7f7f }";
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(css);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(styleSheet,
        CssTree.SimpleSelector.class);
    assertEquals(2, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }

  /**
   * These tests test Caja's parsing of "funky" CSS which are not legal
   * but accepted by commonly used browsers
   */
  @Test
  public void testCajaParseColonInRValue() throws Exception {
    String original = " A {\n"
        + " -moz-opacity: 0.80;\n"
        + " filter: alpha(opacity=40);\n"
        + " filter: progid:DXImageTransform.Microsoft.Alpha(opacity=80);\n"
        + '}';
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(original);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(
        styleSheet, CssTree.SimpleSelector.class);
    assertEquals(1, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }

  @Test
  public void testCajaParseNoLValue() throws Exception {
    String original = "body, input, td {\n"
        + "  Arial, sans-serif;\n"
        + '}';
    cajaCssParser.parseDom(original);
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(original);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(
        styleSheet, CssTree.SimpleSelector.class);
    assertEquals(3, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }

  @Test
  public void testCajaParseNoScheme() throws Exception {
    String original = "span { background-image:url('//www.example.org/image.gif'); }";
    cajaCssParser.parseDom(original);
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(original);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(
        styleSheet, CssTree.SimpleSelector.class);

    // TODO: Remove with next caja update
    // This will break once Caja cloning works again
    assertEquals(1, selectorList.size());
    // assertEquals(3, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }

  @Test
  public void testCajaParseCommentInContent() throws Exception {
    String original = "body { font : bold; } \n//A comment\n A { font : bold; }";
    cajaCssParser.parseDom(original);
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(original);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(
        styleSheet, CssTree.SimpleSelector.class);
    assertEquals(2, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }

  @Test
  public void testCajaParseDotInIdent() throws Exception {
    String original = "li{list-style:none;.padding-bottom:4px;}";
    cajaCssParser.parseDom(original);
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(original);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(
        styleSheet, CssTree.SimpleSelector.class);
    assertEquals(1, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }

  @Test
  public void testCajaParseDotInFunction() throws Exception {
    String original = ".iepngfix {behavior: expression(IEPNGFIX.fix(this)); }";
    cajaCssParser.parseDom(original);
    CssTree.StyleSheet styleSheet = cajaCssParser.parseDom(original);
    List<CssTree.SimpleSelector> selectorList = CajaCssUtils.descendants(
        styleSheet, CssTree.SimpleSelector.class);
    assertEquals(1, selectorList.size());
    assertSame(CssTree.SimpleSelector.class, selectorList.get(0).getClass());
  }
}