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test/runtime/modules/ExportTwice.java

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  40 
  41     // Check that a package can not be exported unqualifiedly, and then exported
  42     // to a specific package.
  43     // Also, check that a package can be exported to a specific package and then
  44     // exported unqualifiedly.
  45     public static void main(String args[]) throws Throwable {
  46         Object m1x, m2x, m3x;
  47 
  48         // Get the java.lang.Module object for module java.base.
  49         Class jlObject = Class.forName("java.lang.Object");
  50         Object jlObject_jlM = jlObject.getModule();
  51         assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
  52 
  53         // Get the class loader for ExportTwice and assume it's also used to
  54         // load classes p1.c1 and p2.c2.
  55         ClassLoader this_cldr = ExportTwice.class.getClassLoader();
  56 
  57         // Define a module for p1.
  58         m1x = ModuleHelper.ModuleObject("module_one", this_cldr, new String[] { "p1" });
  59         assertNotNull(m1x, "Module should not be null");
  60         ModuleHelper.DefineModule(m1x, "9.0", "m1x/here", new String[] { "p1" });
  61         ModuleHelper.AddReadsModule(m1x, jlObject_jlM);
  62 
  63         // Define a module for p2.
  64         m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
  65         assertNotNull(m2x, "Module should not be null");
  66         ModuleHelper.DefineModule(m2x, "9.0", "m2x/there", new String[] { "p2" });
  67         ModuleHelper.AddReadsModule(m2x, jlObject_jlM);
  68 
  69         // Define a module for p3.
  70         m3x = ModuleHelper.ModuleObject("module_three", this_cldr, new String[] { "p3" });
  71         assertNotNull(m3x, "Module should not be null");
  72         ModuleHelper.DefineModule(m3x, "9.0", "m3x/there", new String[] { "p3" });
  73         ModuleHelper.AddReadsModule(m3x, jlObject_jlM);
  74 
  75         // Make package p1 in m1x visible to everyone.
  76         ModuleHelper.AddModuleExportsToAll(m1x, "p1");
  77 
  78         // Try to export p1 only to m2x after it was exported unqualifiedly.  It
  79         // should silently succeed.
  80         ModuleHelper.AddModuleExports(m1x, "p1", m2x);
  81 
  82         // Export p2 to m3x then export it again unqualifiedly.
  83         ModuleHelper.AddModuleExports(m2x, "p2", m3x);
  84         ModuleHelper.AddModuleExportsToAll(m2x, "p2");
  85 
  86         // p1.c1's ctor tries to call a method in p2.c2.  This should work because
  87         // p1's module can read p2's module and p2 is now exported unqualifiedly.
  88         ModuleHelper.AddReadsModule(m1x, m2x);
  89         Class p1_c1_class = Class.forName("p1.c1");
  90         p1_c1_class.newInstance();
  91     }
  92 }


  40 
  41     // Check that a package can not be exported unqualifiedly, and then exported
  42     // to a specific package.
  43     // Also, check that a package can be exported to a specific package and then
  44     // exported unqualifiedly.
  45     public static void main(String args[]) throws Throwable {
  46         Object m1x, m2x, m3x;
  47 
  48         // Get the java.lang.Module object for module java.base.
  49         Class jlObject = Class.forName("java.lang.Object");
  50         Object jlObject_jlM = jlObject.getModule();
  51         assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
  52 
  53         // Get the class loader for ExportTwice and assume it's also used to
  54         // load classes p1.c1 and p2.c2.
  55         ClassLoader this_cldr = ExportTwice.class.getClassLoader();
  56 
  57         // Define a module for p1.
  58         m1x = ModuleHelper.ModuleObject("module_one", this_cldr, new String[] { "p1" });
  59         assertNotNull(m1x, "Module should not be null");
  60         ModuleHelper.DefineModule(m1x, false, "9.0", "m1x/here", new String[] { "p1" });
  61         ModuleHelper.AddReadsModule(m1x, jlObject_jlM);
  62 
  63         // Define a module for p2.
  64         m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
  65         assertNotNull(m2x, "Module should not be null");
  66         ModuleHelper.DefineModule(m2x, false, "9.0", "m2x/there", new String[] { "p2" });
  67         ModuleHelper.AddReadsModule(m2x, jlObject_jlM);
  68 
  69         // Define a module for p3.
  70         m3x = ModuleHelper.ModuleObject("module_three", this_cldr, new String[] { "p3" });
  71         assertNotNull(m3x, "Module should not be null");
  72         ModuleHelper.DefineModule(m3x, false, "9.0", "m3x/there", new String[] { "p3" });
  73         ModuleHelper.AddReadsModule(m3x, jlObject_jlM);
  74 
  75         // Make package p1 in m1x visible to everyone.
  76         ModuleHelper.AddModuleExportsToAll(m1x, "p1");
  77 
  78         // Try to export p1 only to m2x after it was exported unqualifiedly.  It
  79         // should silently succeed.
  80         ModuleHelper.AddModuleExports(m1x, "p1", m2x);
  81 
  82         // Export p2 to m3x then export it again unqualifiedly.
  83         ModuleHelper.AddModuleExports(m2x, "p2", m3x);
  84         ModuleHelper.AddModuleExportsToAll(m2x, "p2");
  85 
  86         // p1.c1's ctor tries to call a method in p2.c2.  This should work because
  87         // p1's module can read p2's module and p2 is now exported unqualifiedly.
  88         ModuleHelper.AddReadsModule(m1x, m2x);
  89         Class p1_c1_class = Class.forName("p1.c1");
  90         p1_c1_class.newInstance();
  91     }
  92 }
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