/*
 * Copyright 2008 Google Inc.
 *
 * 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.css.compiler.ast;

import junit.framework.TestCase;

/**
 * Unit tests for {@link CssNode}
 *
 * @author oana@google.com (Oana Florescu)
 *
 */
public class CssNodeTest extends TestCase {

  public void testNodeCreation() {
    CssLiteralNode node = new CssLiteralNode("");

    assertNull(node.getParent());
    assertNull(node.getSourceCodeLocation());
  }

  public void testBecomeParent() {
    CssPropertyValueNode parentNode = new CssPropertyValueNode();
    CssLiteralNode childNode = new CssLiteralNode("");
    parentNode.becomeParentForNode(childNode);

    assertEquals(parentNode, childNode.getParent());
  }

  public void testDeleteAsParent() {
    CssPropertyValueNode parentNode = new CssPropertyValueNode();
    CssLiteralNode childNode = new CssLiteralNode("");
    parentNode.becomeParentForNode(childNode);
    assertEquals(parentNode, childNode.getParent());
    
    parentNode.removeAsParentOfNode(childNode);
    assertNull(childNode.getParent());
  }
}
