jdk/test/langtools/tools/javac/TextBlockU2028.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 8380912
 * @summary Verify that trailing whitespace warning is not reported for \u2028
 *          inside text block content
 * @library /tools/lib
 * @modules
 *      jdk.compiler/com.sun.tools.javac.api
 *      jdk.compiler/com.sun.tools.javac.main
 * @build toolbox.ToolBox toolbox.JavacTask
 * @run junit TextBlockU2028
 */

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import toolbox.JavacTask;
import toolbox.ToolBox;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class TextBlockU2028 {
    Path base;
    ToolBox tb = new ToolBox();

    @Test
    void testNoFalseTrailingWhitespaceWarning() throws Exception {
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);
        new JavacTask(tb)
                .options("-d", classes.toString(), "-Xlint:text-blocks", "-XDrawDiagnostics", "-Werror")
                .sources("""
                         public class Test {
                             String s = \"\"\"
                                        foo \\u2028 bar
                                        \"\"\";
                         }
                         """)
                .run()
                .writeAll();
    }

    @BeforeEach
    public void setUp(TestInfo info) {
        base = Paths.get(".")
                    .resolve(info.getTestMethod()
                                 .orElseThrow()
                                 .getName());
    }
}