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/*

 * @test

 * @summary Test if package p2 in module m2 is not exported, then class p1.c1

 *          in an unnamed module can not access p2.c2 in module m2.

 * @library /testlibrary /test/lib

 * @compile myloaders/MySameClassLoader.java

 * @compile p2/c2.java

 * @compile p1/c1.java

 * @build Umod_PkgNotExp

 * @run main/othervm -Xbootclasspath/a:. Umod_PkgNotExp

 */

import static jdk.test.lib.Asserts.*;

import java.lang.reflect.Layer;

import java.lang.module.Configuration;

import java.lang.module.ModuleDescriptor;

import java.lang.module.ModuleFinder;

import java.util.HashMap;

import java.util.Map;

import java.util.Set;

import myloaders.MySameClassLoader;

// ClassLoader1 --> defines m1 --> no packages

//                  defines m2 --> packages p2

//

// m1 can read m2

// package p2 in m2 is not exported

//

// class p1.c1 defined in an unnamed module tries to access p2.c2 defined in m2

// Access denied since p2 is not exported.

//

public class Umod_PkgNotExp {

    // Create a Layer over the boot layer.

    // Define modules within this layer to test access between

    // publically defined classes within packages of those modules.

    public void createLayerOnBoot() throws Throwable {

        // Define module:     m1

        // Can read:          java.base, m2

        // Packages:          none

        // Packages exported: none

        ModuleDescriptor descriptor_m1 =

                new ModuleDescriptor.Builder("m1")

                        .requires("java.base")

                        .requires("m2")

                        .build();

        // Define module:     m2

        // Can read:          java.base

        // Packages:          p2

        // Packages exported: none

        ModuleDescriptor descriptor_m2 =

                new ModuleDescriptor.Builder("m2")

                        .requires("java.base")

                        .conceals("p2")

                        .build();

        // Set up a ModuleFinder containing all modules for this layer.

        ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);

        // Resolves "m1"

        Configuration cf = Layer.boot()

                .configuration()

                .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1"));

        // map each module to the same class loader for this test

        Map<String, ClassLoader> map = new HashMap<>();

        map.put("m1", MySameClassLoader.loader1);

        map.put("m2", MySameClassLoader.loader1);

        // Create Layer that contains m1 and m2

        Layer layer = Layer.boot().defineModules(cf, map::get);

        assertTrue(layer.findLoader("m1") == MySameClassLoader.loader1);

        assertTrue(layer.findLoader("m2") == MySameClassLoader.loader1);

        assertTrue(layer.findLoader("java.base") == null);

        // now use the same loader to load class p1.c1

        Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1");

        try {

            p1_c1_class.newInstance();

            throw new RuntimeException("Failed to get IAE (p2 in m2 is not exported)");

        } catch (IllegalAccessError e) {

          System.out.println(e.getMessage());

          if (!e.getMessage().contains("does not export")) {

              throw new RuntimeException("Wrong message: " + e.getMessage());

          }

        }

    }

    public static void main(String args[]) throws Throwable {

      Umod_PkgNotExp test = new Umod_PkgNotExp();

      test.createLayerOnBoot();

    }

}