1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @modules java.base/jdk.internal.module
  27  * @run testng ClassFileVersionsTest
  28  * @summary Test parsing of module-info.class with different class file versions
  29  */
  30 
  31 import java.lang.module.InvalidModuleDescriptorException;
  32 import java.lang.module.ModuleDescriptor;
  33 import java.lang.module.ModuleDescriptor.Requires.Modifier;
  34 import java.nio.ByteBuffer;
  35 import java.util.Set;
  36 
  37 import static java.lang.module.ModuleDescriptor.Requires.Modifier.*;
  38 
  39 import jdk.internal.module.ModuleInfoWriter;
  40 
  41 import org.testng.annotations.DataProvider;
  42 import org.testng.annotations.Test;
  43 import static org.testng.Assert.*;
  44 
  45 public class ClassFileVersionsTest {
  46 
  47     // major, minor, modifiers for requires java.base
  48     @DataProvider(name = "supported")
  49     public Object[][] supported() {
  50         return new Object[][]{
  51                 { 53,   0,  Set.of() },                      // JDK 9
  52                 { 53,   0,  Set.of(STATIC) },
  53                 { 53,   0,  Set.of(TRANSITIVE) },
  54                 { 53,   0,  Set.of(STATIC, TRANSITIVE) },
  55 
  56                 { 54,   0,  Set.of() },                      // JDK 10
  57         };
  58     }
  59 
  60     // major, minor, modifiers for requires java.base
  61     @DataProvider(name = "unsupported")
  62     public Object[][] unsupported() {
  63         return new Object[][]{
  64                 { 50,   0,  Set.of()},                       // JDK 6
  65                 { 51,   0,  Set.of()},                       // JDK 7
  66                 { 52,   0,  Set.of()},                       // JDK 8
  67 
  68                 { 54,   0,  Set.of(STATIC) },                // JDK 10
  69                 { 54,   0,  Set.of(TRANSITIVE) },
  70                 { 54,   0,  Set.of(STATIC, TRANSITIVE) },
  71 
  72                 { 55,   0,  Set.of()},                       // JDK 11
  73         };
  74     }
  75 
  76     @Test(dataProvider = "supported")
  77     public void testSupported(int major, int minor, Set<Modifier> ms) {
  78         ModuleDescriptor descriptor = ModuleDescriptor.newModule("foo")
  79                 .requires(ms, "java.base")
  80                 .build();
  81         ByteBuffer bb = ModuleInfoWriter.toByteBuffer(descriptor);
  82         classFileVersion(bb, major, minor);
  83         descriptor = ModuleDescriptor.read(bb);
  84         assertEquals(descriptor.name(), "foo");
  85     }
  86 
  87     @Test(dataProvider = "unsupported",
  88           expectedExceptions = InvalidModuleDescriptorException.class)
  89     public void testUnsupported(int major, int minor, Set<Modifier> ms) {
  90         ModuleDescriptor descriptor = ModuleDescriptor.newModule("foo")
  91                 .requires(ms, "java.base")
  92                 .build();
  93         ByteBuffer bb = ModuleInfoWriter.toByteBuffer(descriptor);
  94         classFileVersion(bb, major, minor);
  95 
  96         // throws InvalidModuleDescriptorException
  97         ModuleDescriptor.read(bb);
  98     }
  99 
 100     private void classFileVersion(ByteBuffer bb, int major, int minor) {
 101         bb.putShort(4, (short) minor);
 102         bb.putShort(6, (short) major);
 103     }
 104 }