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/*
* Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.nashorn.internal.runtime;
import static org.testng.Assert.assertEquals;
import org.testng.annotations.Test;
/**
* Tests for JSType methods.
*
* @test
* @run testng jdk.nashorn.internal.runtime.ConsStringTest
*/
public class ConsStringTest {
/**
* Test toString conversion
*/
@Test
public void testConsStringToString() {
final ConsString cs1 = new ConsString("b", "c");
final ConsString cs2 = new ConsString("d", "e");
final ConsString cs3 = new ConsString(cs1, cs2);
final ConsString cs4 = new ConsString(cs3, "f");
final ConsString cs5 = new ConsString("a", cs4);
assertEquals(cs5.toString(), "abcdef");
assertEquals(cs4.toString(), "bcdef");
assertEquals(cs3.toString(), "bcde");
assertEquals(cs2.toString(), "de");
assertEquals(cs1.toString(), "bc");
// ConsStrings should be flattened now
assertEquals(cs1.getComponents()[0], "bc");
assertEquals(cs1.getComponents()[1], "");
assertEquals(cs2.getComponents()[0], "de");
assertEquals(cs2.getComponents()[1], "");
assertEquals(cs3.getComponents()[0], "bcde");
assertEquals(cs3.getComponents()[1], "");
assertEquals(cs4.getComponents()[0], "bcdef");
assertEquals(cs4.getComponents()[1], "");
assertEquals(cs5.getComponents()[0], "abcdef");
assertEquals(cs5.getComponents()[1], "");
}
/**
* Test charAt
*/
@Test
public void testConsStringCharAt() {
final ConsString cs1 = new ConsString("b", "c");
final ConsString cs2 = new ConsString("d", "e");
final ConsString cs3 = new ConsString(cs1, cs2);
final ConsString cs4 = new ConsString(cs3, "f");
final ConsString cs5 = new ConsString("a", cs4);
assertEquals(cs1.charAt(1), 'c');
assertEquals(cs2.charAt(0), 'd');
assertEquals(cs3.charAt(3), 'e');
assertEquals(cs4.charAt(1), 'c');
assertEquals(cs5.charAt(2), 'c');
// ConsStrings should be flattened now
assertEquals(cs1.getComponents()[0], "bc");
assertEquals(cs1.getComponents()[1], "");
assertEquals(cs2.getComponents()[0], "de");
assertEquals(cs2.getComponents()[1], "");
assertEquals(cs3.getComponents()[0], "bcde");
assertEquals(cs3.getComponents()[1], "");
assertEquals(cs4.getComponents()[0], "bcdef");
assertEquals(cs4.getComponents()[1], "");
assertEquals(cs5.getComponents()[0], "abcdef");
assertEquals(cs5.getComponents()[1], "");
}
/**
* Test flattening of top-level and internal ConsStrings
*/
@Test
public void testConsStringFlattening() {
final ConsString cs1 = new ConsString("b", "c");
final ConsString cs2 = new ConsString("d", "e");
final ConsString cs3 = new ConsString(cs1, cs2);
final ConsString cs4 = new ConsString(cs3, "f");
final ConsString cs5 = new ConsString("a", cs4);
// top-level ConsString should not yet be flattened
assert(cs5.getComponents()[0] == "a");
assert(cs5.getComponents()[1] == cs4);
assertEquals(cs5.toString(), "abcdef");
// top-level ConsString should be flattened
assertEquals(cs5.getComponents()[0], "abcdef");
assertEquals(cs5.getComponents()[1], "");
// internal ConsString should not yet be flattened after first traversal
assertEquals(cs4.getComponents()[0], cs3);
assertEquals(cs4.getComponents()[1], "f");
final ConsString cs6 = new ConsString("a", cs4);
// top-level ConsString should not yet be flattened
assertEquals(cs6.getComponents()[0], "a");
assertEquals(cs6.getComponents()[1], cs4);
assertEquals(cs6.toString(), "abcdef");
// top-level ConsString should be flattened
assertEquals(cs6.getComponents()[0], "abcdef");
assertEquals(cs6.getComponents()[1], "");
// internal ConsString should have been flattened after second traversal
assertEquals(cs4.getComponents()[0], "bcdef");
assertEquals(cs4.getComponents()[1], "");
}
}
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