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 }