1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.replacements.test;
  26 
  27 import org.graalvm.compiler.core.test.GraalCompilerTest;
  28 import org.junit.Test;
  29 
  30 // JDK-8228903
  31 public final class StringCompareToAVX512Test extends GraalCompilerTest {
  32 
  33     public static int compareTo(String str1, String str2) {
  34         return str1.compareTo(str2);
  35     }
  36 
  37     @Test
  38     public void testLatin1VsUtf16BadStride() {
  39         String latin1 = "000000001111111122222222333333334444444455555555666666667777777\u0099888888889";
  40         String utf16 = "000000001111111122222222333333334444444455555555666666667777777\u0699888888889";
  41         test("compareTo", latin1, utf16);
  42         test("compareTo", utf16, latin1);
  43     }
  44 
  45     @Test
  46     public void testLatin1VsUtf16BadStride2() {
  47         String latin1 = "00000000111111112222222233333333444444445555555566666666777777778888888\u008799999999AAAAAAAAB";
  48         String utf16 = "00000000111111112222222233333333444444445555555566666666777777778888888\u058799999999AAAAAAAAB";
  49         test("compareTo", latin1, utf16);
  50         test("compareTo", utf16, latin1);
  51     }
  52 
  53     @Test
  54     public void testLatin1VsUtf16FalseEquality() {
  55         // java.lang.AssertionError: expected:<-1536> but was:<0>
  56         String latin1 = "00000000111111112222222233333333\u0099444444455555555";
  57         String utf16 = "00000000111111112222222233333333\u0699xxxxxxxxxxxxxxx";
  58         test("compareTo", latin1, utf16);
  59         test("compareTo", utf16, latin1);
  60     }
  61 
  62     @Test
  63     public void testLatin1BeyondRange() {
  64         StringBuilder latin1Builder = new StringBuilder();
  65         for (int j = 0; j <= 255; ++j) {
  66             latin1Builder.append((char) j);
  67         }
  68         String latin1 = latin1Builder.toString();
  69         test("compareTo", latin1, String.valueOf(latin1.toCharArray()));
  70     }
  71 }