1 /* 2 * Copyright (c) 2014, 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 import com.oracle.testlibrary.jsr292.Helper; 25 import java.lang.reflect.Method; 26 import java.util.Collection; 27 import java.util.function.Function; 28 29 /** 30 * Lambda forms caching test case class. Contains all necessary test routines to 31 * test lambda forms caching in method handles returned by methods of 32 * MethodHandles class. 33 * 34 * @author kshefov 35 */ 36 public abstract class LambdaFormTestCase { 37 38 private final static String METHOD_HANDLE_CLASS_NAME = "java.lang.invoke.MethodHandle"; 39 private final static String INTERNAL_FORM_METHOD_NAME = "internalForm"; 40 41 /** 42 * Reflection link to {@code j.l.i.MethodHandle.internalForm} method. It is 43 * used to get a lambda form from a method handle. 44 */ 45 protected final static Method INTERNAL_FORM; 46 47 static { 48 try { 49 Class mhClass = Class.forName(METHOD_HANDLE_CLASS_NAME); 50 INTERNAL_FORM = mhClass.getDeclaredMethod(INTERNAL_FORM_METHOD_NAME); 51 INTERNAL_FORM.setAccessible(true); 52 } catch (Exception ex) { 53 throw new Error("Unexpected exception: ", ex); 54 } 55 } 56 57 private final TestMethods testMethod; 58 59 /** 60 * Test case constructor. Generates test cases with random method types for 61 * given methods form {@code j.l.i.MethodHandles} class. 62 * 63 * @param testMethod A method from {@code j.l.i.MethodHandles} class which 64 * returns a {@code j.l.i.MethodHandle}. 65 */ 66 protected LambdaFormTestCase(TestMethods testMethod) { 67 this.testMethod = testMethod; 68 } 69 70 public TestMethods getTestMethod() { 71 return testMethod; 72 } 73 74 /** 75 * Routine that executes a test case. 76 */ 77 public abstract void doTest(); 78 79 /** 80 * Runs a number of test cases defined by the size of testCases list. 81 * 82 * @param ctor constructor of LambdaFormCachingTest or its child classes 83 * object. 84 * @param testMethods list of test methods 85 */ 86 public static void runTests(Function<TestMethods, LambdaFormTestCase> ctor, Collection<TestMethods> testMethods) { 87 boolean passed = true; 88 int testCounter = 0; 89 int failCounter = 0; 90 long iterations = Math.max(1, Helper.TEST_LIMIT / testMethods.size()); 91 for (long i = 0; i < iterations; i++) { 92 System.err.println(String.format("Iteration %d:", i)); 93 for (TestMethods testMethod : testMethods) { 94 LambdaFormTestCase testCase = ctor.apply(testMethod); 95 try { 96 System.err.printf("Tested LF caching feature with MethodHandles.%s method.%n", 97 testCase.getTestMethod().name); 98 testCase.doTest(); 99 System.err.println("PASSED"); 100 } catch (Throwable t) { 101 t.printStackTrace(); 102 System.err.println("FAILED"); 103 passed = false; 104 failCounter++; 105 } 106 testCounter++; 107 } 108 } 109 if (!passed) { 110 throw new Error(String.format("%d of %d test cases FAILED! %n" 111 + "Rerun the test with the same \"-Dseed=\" option as in the log file!", 112 failCounter, testCounter)); 113 } else { 114 System.err.println(String.format("All %d test cases PASSED!", testCounter)); 115 } 116 } 117 }