/*
* Copyright 2013 eXo Platform SAS
*
* 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 juzu.impl.router;
import juzu.impl.router.regex.RENode;
import juzu.impl.router.regex.REParser;
import juzu.impl.router.regex.RERenderer;
import juzu.impl.router.regex.REVisitor;
import juzu.impl.router.regex.SyntaxException;
import juzu.test.AbstractTestCase;
import org.junit.Test;
import java.io.IOException;
/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
public class GroupTransformationTestCase extends AbstractTestCase {
@Test
public void testCapturing() throws SyntaxException, IOException {
assertCapturing("a", "(a)");
assertCapturing("(a)", "(a)");
assertCapturing("a(b)c", "a(b)c");
assertCapturing("(a)?", "((?:a)?)");
assertCapturing("a|b", "(a)|(b)");
assertCapturing("(a)|b", "(a)|(b)");
assertCapturing("(a|b)", "(a|b)");
assertCapturing("(a)(b)", "((?:a)(?:b))");
assertCapturing("(a)|", "(a)|()");
assertCapturing("|(a)", "()|(a)");
assertCapturing("|", "()|()");
}
@Test
public void testNonCapturing() throws SyntaxException, IOException {
assertNonCapturing("a", "(a)");
assertNonCapturing("(a)", "((?:a))");
assertNonCapturing("a(b)c", "(a(?:b)c)");
assertNonCapturing("(a)|b", "((?:a)|b)");
}
private void assertNonCapturing(String test, String expected) throws SyntaxException, IOException {
assertTransform(test, expected, false);
}
private void assertCapturing(String test, String expected) throws SyntaxException, IOException {
assertTransform(test, expected, true);
}
private void assertTransform(String test, String expected, boolean capturing) throws SyntaxException, IOException {
RENode node = new REParser(test).parse();
REVisitor<RuntimeException> transformer = capturing ? new CaptureGroupTransformation() : new NonCaptureGroupTransformation();
node.accept(transformer);
StringBuilder sb = new StringBuilder();
RERenderer renderer = new RERenderer(sb);
node.accept(renderer);
assertEquals(expected, sb.toString());
}
}