FlexPMD/language-module/parser/parser-impl/src/test/java/org/apache/flex/pmd/parser/impl/NestedNodeTest.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.flex.pmd.parser.impl;

import static org.junit.Assert.*;

import org.apache.flex.pmd.parser.NodeKind;
import org.apache.flex.pmd.parser.exceptions.TokenException;
import org.junit.Before;
import org.junit.Test;

public class NestedNodeTest extends AbstractAs3ParserTestBase {

    private NestedNode function;

    @Override
    @Before
    public void setUp() {
        super.setUp();

        final String code = "public function foo() : void     {"
                + "while(i>0){" + "while(true){" + "switch(a){" + "case 1:break;default:return;" + "}" + "}"
                + "}" + "}";
        final Node classNode = parseClass(code);

        function = (Node) classNode.getChild(0);
    }

    @Test
    public void testComputeCyclomaticComplexity() {
        assertEquals(5, function.computeCyclomaticComplexity());
    }

    @Test
    public void testCountNodeFromType() {
        assertEquals(2, function.countNodeFromType(NodeKind.WHILE));
    }

    @Test
    public void testGetLastChild() {
        assertEquals(NodeKind.RETURN, function.getLastChild().getId());

        assertNull(function.getChild(Integer.MAX_VALUE));
    }

    @Test
    public void testIs() {
        assertFalse(function.is(null));
    }

    private Node parseClass(final String input) {
        scn.setLines(new String[]
                {"{", input, "}", "__END__"});
        try {
            asp.nextToken();
            asp.nextToken(); // skip {
            return asp.parseClassContent();
        } catch (final TokenException e) {
            e.printStackTrace();
        }
        return null;
    }
}