test/langtools/tools/javac/modules/AnachronisticModuleInfo/AnachronisticModuleInfoTest.java

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/*
 * @test
 * @bug 8157512
 * @summary AssertionError in javac when module-info < v53.0
 * @library /tools/lib
 * @modules
 *      jdk.compiler/com.sun.tools.javac.api
 *      jdk.compiler/com.sun.tools.javac.main
 * @build toolbox.ToolBox toolbox.JavacTask module-info
 * @run main AnachronisticModuleInfoTest
 */

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

import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;

public class AnachronisticModuleInfoTest extends TestRunner {

    protected ToolBox tb;

    AnachronisticModuleInfoTest() {
        super(System.err);
        tb = new ToolBox();
    }

    public static void main(String... args) throws Exception {
        AnachronisticModuleInfoTest t = new AnachronisticModuleInfoTest();
        t.runTests();
    }

    /**
     * Run all methods annotated with @Test, and throw an exception if any
     * errors are reported..
     *
     * @throws Exception if any errors occurred
     */
    protected void runTests() throws Exception {
        runTests(m -> new Object[] { Paths.get(m.getName()) });
    }

    Path[] findJavaFiles(Path... paths) throws IOException {
        return tb.findJavaFiles(paths);
    }

    @Test
    public void anachronisticModuleInfoTest(Path base) throws Exception {
        Path src = base.resolve("src");
        tb.writeJavaFiles(src, "class C { }");
        String modulePath = System.getProperty("test.classes");

        String log = new JavacTask(tb, Task.Mode.CMDLINE)
                .options("-XDrawDiagnostics",
                        "--upgrade-module-path", modulePath)
                .files(findJavaFiles(src))
                .run(Task.Expect.FAIL)
                .writeAll()
                .getOutput(Task.OutputKind.DIRECT);
        String expected = "- compiler.err.cant.access: foo.module-info, (compiler.misc.bad.class.file.header: module-info.class, (compiler.misc.anachronistic.module.info: 52, 0))";
        if (!log.contains(expected))
            throw new Exception("expected output not found" + log);
    }
}