Quelle TestStringEncoding.java Sprache: JAVA

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* Copyright (c) 2021, 2022, 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
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*  published by the Free Software Foundation.
*
*  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
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*  Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.lang.foreign.Arena;
import java.lang.foreign.MemorySegment;

import org.testng.annotations.*;
import static org.testng.Assert.*;

/*
* @test
* @enablePreview
* @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64"
* @run testng TestStringEncoding
*/

public class TestStringEncoding {

    @Test(dataProvider = "strings")
    public void testStrings(String testString, int expectedByteLength) {
        try (Arena arena = Arena.openConfined()) {
            MemorySegment text = arena.allocateUtf8String(testString);

            assertEquals(text.byteSize(), expectedByteLength);

            String roundTrip = text.getUtf8String(0);
            assertEquals(roundTrip, testString);
        }
    }

    @DataProvider
    public static Object[][] strings() {
        return new Object[][] {
            { "testing",               8 },
            { "",                      1 },
            { "X",                     2 },
            { "12345",                 6 },
            { "yen \u00A5",            7 }, // in UTF-8 2 bytes: 0xC2 0xA5
            { "snowman \u26C4",       12 }, // in UTF-8 three bytes: 0xE2 0x9B 0x84
            { "rainbow \uD83C\uDF08", 13 }  // in UTF-8 four bytes: 0xF0 0x9F 0x8C 0x88
        };
    }
}

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