jdk8-mips64-public/langtools: test/tools/javac/defaultMethods/TestDefaultBody.java@01c9d4161882

8003280: Add lambda tests
Summary: Turn on lambda expression, method reference and default method support
Reviewed-by: jjg

     1 /*

     2  * Copyright (c) 2011, 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  */

    24 /*

    25  * @test

    26  * @summary  check that code attributed for default methods is correctly generated

    27  */

    29 import com.sun.tools.classfile.AccessFlags;

    30 import com.sun.tools.classfile.Attribute;

    31 import com.sun.tools.classfile.ClassFile;

    32 import com.sun.tools.classfile.ConstantPool.*;

    33 import com.sun.tools.classfile.Code_attribute;

    34 import com.sun.tools.classfile.Instruction;

    35 import com.sun.tools.classfile.Method;

    37 import com.sun.tools.classfile.Opcode;

    38 import java.io.*;

    40 public class TestDefaultBody {

    42     interface TestInterface {

    43         int no_default(int i);

    44         default int yes_default(int i) { return impl(this, i); }

    45     }

    47     static int impl(TestInterface ti, int i) { return 0; }

    49     static final String TARGET_CLASS_NAME = "TestDefaultBody";

    50     static final String TARGET_NAME = "impl";

    51     static final String TARGET_TYPE = "(LTestDefaultBody$TestInterface;I)I";

    52     static final String SUBTEST_NAME = TestInterface.class.getName() + ".class";

    53     static final String TEST_METHOD_NAME = "yes_default";

    55     public static void main(String... args) throws Exception {

    56         new TestDefaultBody().run();

    57     }

    59     public void run() throws Exception {

    60         String workDir = System.getProperty("test.classes");

    61         File compiledTest = new File(workDir, SUBTEST_NAME);

    62         verifyDefaultBody(compiledTest);

    63     }

    65     void verifyDefaultBody(File f) {

    66         System.err.println("verify: " + f);

    67         try {

    68             ClassFile cf = ClassFile.read(f);

    69             Method testMethod = null;

    70             Code_attribute codeAttr = null;

    71             for (Method m : cf.methods) {

    72                 codeAttr = (Code_attribute)m.attributes.get(Attribute.Code);

    73                 String mname = m.getName(cf.constant_pool);

    74                 if (mname.equals(TEST_METHOD_NAME)) {

    75                     testMethod = m;

    76                     break;

    77                 } else {

    78                     codeAttr = null;

    79                 }

    80             }

    81             if (testMethod == null) {

    82                 throw new Error("Test method not found");

    83             }

    84             if (testMethod.access_flags.is(AccessFlags.ACC_ABSTRACT)) {

    85                 throw new Error("Test method is abstract");

    86             }

    87             if (codeAttr == null) {

    88                 throw new Error("Code attribute in test method not found");

    89             }

    91             boolean found = false;

    92             for (Instruction instr : codeAttr.getInstructions()) {

    93                 if (instr.getOpcode() == Opcode.INVOKESTATIC) {

    94                     found = true;

    95                     int pc_index = instr.getShort(1);

    96                     CONSTANT_Methodref_info mref = (CONSTANT_Methodref_info)cf.constant_pool.get(pc_index);

    97                     String className = mref.getClassName();

    98                     String targetName = mref.getNameAndTypeInfo().getName();

    99                     String targetType = mref.getNameAndTypeInfo().getType();

   101                     if (!className.equals(TARGET_CLASS_NAME)) {

   102                         throw new Error("unexpected class in default method body " + className);

   103                     }

   104                     if (!targetName.equals(TARGET_NAME)) {

   105                         throw new Error("unexpected method name in default method body " + targetName);

   106                     }

   107                     if (!targetType.equals(TARGET_TYPE)) {

   108                         throw new Error("unexpected method type in default method body " + targetType);

   109                     }

   110                     break;

   111                 }

   112             }

   114             if (!found) {

   115                 throw new Error("no invokestatic found in default method body");

   116             }

   117         } catch (Exception e) {

   118             e.printStackTrace();

   119             throw new Error("error reading " + f +": " + e);

   120         }

   121     }

   122 }

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