118 lines
4.3 KiB
Java
118 lines
4.3 KiB
Java
/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import com.oracle.testlibrary.jsr292.Helper;
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import java.lang.reflect.Method;
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import java.util.Collection;
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import java.util.function.Function;
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/**
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* Lambda forms caching test case class. Contains all necessary test routines to
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* test lambda forms caching in method handles returned by methods of
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* MethodHandles class.
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*
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* @author kshefov
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*/
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public abstract class LambdaFormTestCase {
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private final static String METHOD_HANDLE_CLASS_NAME = "java.lang.invoke.MethodHandle";
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private final static String INTERNAL_FORM_METHOD_NAME = "internalForm";
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/**
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* Reflection link to {@code j.l.i.MethodHandle.internalForm} method. It is
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* used to get a lambda form from a method handle.
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*/
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protected final static Method INTERNAL_FORM;
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static {
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try {
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Class mhClass = Class.forName(METHOD_HANDLE_CLASS_NAME);
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INTERNAL_FORM = mhClass.getDeclaredMethod(INTERNAL_FORM_METHOD_NAME);
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INTERNAL_FORM.setAccessible(true);
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} catch (Exception ex) {
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throw new Error("Unexpected exception: ", ex);
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}
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}
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private final TestMethods testMethod;
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/**
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* Test case constructor. Generates test cases with random method types for
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* given methods form {@code j.l.i.MethodHandles} class.
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*
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* @param testMethod A method from {@code j.l.i.MethodHandles} class which
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* returns a {@code j.l.i.MethodHandle}.
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*/
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protected LambdaFormTestCase(TestMethods testMethod) {
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this.testMethod = testMethod;
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}
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public TestMethods getTestMethod() {
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return testMethod;
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}
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/**
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* Routine that executes a test case.
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*/
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public abstract void doTest();
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/**
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* Runs a number of test cases defined by the size of testCases list.
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*
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* @param ctor constructor of LambdaFormCachingTest or its child classes
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* object.
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* @param testMethods list of test methods
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*/
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public static void runTests(Function<TestMethods, LambdaFormTestCase> ctor, Collection<TestMethods> testMethods) {
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boolean passed = true;
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int testCounter = 0;
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int failCounter = 0;
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long iterations = Math.max(1, Helper.TEST_LIMIT / testMethods.size());
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for (long i = 0; i < iterations; i++) {
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System.err.println(String.format("Iteration %d:", i));
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for (TestMethods testMethod : testMethods) {
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LambdaFormTestCase testCase = ctor.apply(testMethod);
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try {
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System.err.printf("Tested LF caching feature with MethodHandles.%s method.%n",
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testCase.getTestMethod().name);
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testCase.doTest();
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System.err.println("PASSED");
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} catch (Throwable t) {
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t.printStackTrace();
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System.err.println("FAILED");
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passed = false;
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failCounter++;
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}
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testCounter++;
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}
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}
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if (!passed) {
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throw new Error(String.format("%d of %d test cases FAILED! %n"
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+ "Rerun the test with the same \"-Dseed=\" option as in the log file!",
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failCounter, testCounter));
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} else {
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System.err.println(String.format("All %d test cases PASSED!", testCounter));
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}
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}
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}
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