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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/**
 * @test
 * @bug 8244778
 * @requires vm.cds
 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
 * @run driver NewModuleFinderTest
 * @summary Make sure the archived module graph can co-exist with modules that are
 *          dynamically defined at runtime using the ModuleFinder API.
 */

import java.lang.module.Configuration;
import java.lang.module.ModuleFinder;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Set;
import jdk.test.lib.cds.CDSTestUtils;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class NewModuleFinderTest {

    private static final Path USER_DIR = Paths.get(System.getProperty("user.dir"));
    private static final String TEST_SRC = System.getProperty("test.src");
    private static final Path SRC_DIR = Paths.get(TEST_SRC, "modulepath/src");
    private static final Path MODS_DIR = Paths.get("mods");

    // the module name of the test module
    private static final String TEST_MODULE = "com.simple";

    // the module main class
    private static final String MAIN_CLASS = "com.simple.Main";

    private static final Set<String> modules = Set.of(TEST_MODULE);

    public static void buildTestModule() throws Exception {
        // javac -d mods/$TESTMODULE --module-path MOD_DIR modulepath/src/$TESTMODULE/**
        JarBuilder.compileModule(SRC_DIR.resolve(TEST_MODULE),
                                 MODS_DIR.resolve(TEST_MODULE),
                                 MODS_DIR.toString());
    }

    public static void main(String... args) throws Exception {
        // compile the modules and create the modular jar files
        buildTestModule();

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-Xlog:cds",
            "-Xlog:module=debug",
            "NewModuleFinderTest$Helper");
        OutputAnalyzer out = CDSTestUtils.executeAndLog(pb, "exec");
        out.shouldHaveExitValue(0);
        out.shouldContain("define_module(): creation of module: com.simple,");
    }

    static class Helper {
        public static void main(String... args) {
            ModuleFinder finder = ModuleFinder.of(MODS_DIR);
            Configuration parent = ModuleLayer.boot().configuration();
            Configuration cf = parent.resolveAndBind(ModuleFinder.of(),
                                                     finder,
                                                     modules);

            ClassLoader scl = ClassLoader.getSystemClassLoader();
            ModuleLayer layer = ModuleLayer.boot().defineModulesWithManyLoaders(cf, scl);

            Module m1 = layer.findModule(TEST_MODULE).get();
            System.out.println("Module = " + m1);
            if (m1 != null) {
                System.out.println("Success");
            } else {
                throw new RuntimeException("Module should not be null");
            }
        }
    }
}