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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")
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                 { 55,   0,  Set.of()},                       // JDK 11
59         };
60     }
61 
62     // major, minor, modifiers for requires java.base
63     @DataProvider(name = "unsupported")
unsupported()64     public Object[][] unsupported() {
65         return new Object[][]{
66                 { 50,   0,  Set.of()},                       // JDK 6
67                 { 51,   0,  Set.of()},                       // JDK 7
68                 { 52,   0,  Set.of()},                       // JDK 8
69 
70                 { 54,   0,  Set.of(STATIC) },                // JDK 10
71                 { 54,   0,  Set.of(TRANSITIVE) },
72                 { 54,   0,  Set.of(STATIC, TRANSITIVE) },
73 
74                 { 55,   0,  Set.of(STATIC) },                // JDK 11
75                 { 55,   0,  Set.of(TRANSITIVE) },
76                 { 55,   0,  Set.of(STATIC, TRANSITIVE) },
77 
78                 { 56,   0,  Set.of()},                       // JDK 12
79         };
80     }
81 
82     @Test(dataProvider = "supported")
testSupported(int major, int minor, Set<Modifier> ms)83     public void testSupported(int major, int minor, Set<Modifier> ms) {
84         ModuleDescriptor descriptor = ModuleDescriptor.newModule("foo")
85                 .requires(ms, "java.base")
86                 .build();
87         ByteBuffer bb = ModuleInfoWriter.toByteBuffer(descriptor);
88         classFileVersion(bb, major, minor);
89         descriptor = ModuleDescriptor.read(bb);
90         assertEquals(descriptor.name(), "foo");
91     }
92 
93     @Test(dataProvider = "unsupported",
94           expectedExceptions = InvalidModuleDescriptorException.class)
testUnsupported(int major, int minor, Set<Modifier> ms)95     public void testUnsupported(int major, int minor, Set<Modifier> ms) {
96         ModuleDescriptor descriptor = ModuleDescriptor.newModule("foo")
97                 .requires(ms, "java.base")
98                 .build();
99         ByteBuffer bb = ModuleInfoWriter.toByteBuffer(descriptor);
100         classFileVersion(bb, major, minor);
101 
102         // throws InvalidModuleDescriptorException
103         ModuleDescriptor.read(bb);
104     }
105 
classFileVersion(ByteBuffer bb, int major, int minor)106     private void classFileVersion(ByteBuffer bb, int major, int minor) {
107         bb.putShort(4, (short) minor);
108         bb.putShort(6, (short) major);
109     }
110 }
111