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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/**
 * @test
 * @bug 8371873
 * @summary Check for proper handling of trailing ASCII SUB character
 * @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 AsciiSubCharTest
 */

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

import toolbox.JavacTask;
import toolbox.Task;
import toolbox.ToolBox;

public class AsciiSubCharTest {

    ToolBox tb = new ToolBox();
    Path base;

    @Test
    public void testTrailingAsciiSubIsIgnored() throws Exception {
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);
        new JavacTask(tb)
                .options("-d", classes.toString())
                .sources("""
                         public class Test {
                            void main(String... args) { IO.println("\u001A"); }
                         }
                         \u001A""")
                .run()
                .writeAll();
    }

    @Test
    public void testMultipleTrailingAsciiSubAreReported() throws Exception {
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);
        List<String> out = new JavacTask(tb)
                .options("-d", classes.toString(), "-XDrawDiagnostics", "-nowarn")
                .sources("""
                         public class Test {
                            void main(String... args) { IO.println("\u001A"); }
                         }
                         \u001A\u001A""")
                .run(Task.Expect.FAIL)
                .writeAll()
                .getOutputLines(Task.OutputKind.DIRECT);
        tb.checkEqual(out, List.of(
                "Test.java:4:1: compiler.err.illegal.char: \\u001a",
                "Test.java:4:2: compiler.err.premature.eof",
                "2 errors"));
    }

    @Test
    public void test8371873() throws Exception {
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);
        List<String> out = new JavacTask(tb)
                .options("-d", classes.toString(), "-XDrawDiagnostics", "-nowarn")
                .sources("""
                         public class Test {
                            void main(String... args) { IO.println("\u001A"); }
                         }
                         \u001A\u0001""")
                .run(Task.Expect.FAIL)
                .writeAll()
                .getOutputLines(Task.OutputKind.DIRECT);
        tb.checkEqual(out, List.of(
                "Test.java:4:1: compiler.err.illegal.char: \\u001a",
                "Test.java:4:2: compiler.err.illegal.char: \\u0001",
                "Test.java:4:3: compiler.err.premature.eof",
                "3 errors"));
    }

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