8057719: Develop new tests for LambdaForm Reduction and Caching feature

Reviewed-by: iignatyev, vlivanov, psandoz
2025-09-21 03:24:38 +02:00 · 2014-09-12 22:33:09 +04:00 · 2014-09-12 22:33:09 +04:00 · 881fa79cfe
commit 881fa79cfe
parent 9e30841d28
6 changed files with 1184 additions and 0 deletions
--- a/jdk/test/java/lang/invoke/LFCaching/LambdaFormTestCase.java
+++ b/jdk/test/java/lang/invoke/LFCaching/LambdaFormTestCase.java
@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import com.oracle.testlibrary.jsr292.Helper;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.function.Function;
+
+/**
+ * Lambda forms caching test case class. Contains all necessary test routines to
+ * test lambda forms caching in method handles returned by methods of
+ * MethodHandles class.
+ *
+ * @author kshefov
+ */
+public abstract class LambdaFormTestCase {
+
+    private final static String METHOD_HANDLE_CLASS_NAME = "java.lang.invoke.MethodHandle";
+    private final static String INTERNAL_FORM_METHOD_NAME = "internalForm";
+
+    /**
+     * Reflection link to {@code j.l.i.MethodHandle.internalForm} method. It is
+     * used to get a lambda form from a method handle.
+     */
+    protected final static Method INTERNAL_FORM;
+
+    static {
+        try {
+            Class mhClass = Class.forName(METHOD_HANDLE_CLASS_NAME);
+            INTERNAL_FORM = mhClass.getDeclaredMethod(INTERNAL_FORM_METHOD_NAME);
+            INTERNAL_FORM.setAccessible(true);
+        } catch (Exception ex) {
+            throw new Error("Unexpected exception: ", ex);
+        }
+    }
+
+    private final TestMethods testMethod;
+
+    /**
+     * Test case constructor. Generates test cases with random method types for
+     * given methods form {@code j.l.i.MethodHandles} class.
+     *
+     * @param testMethod A method from {@code j.l.i.MethodHandles} class which
+     * returns a {@code j.l.i.MethodHandle}.
+     */
+    protected LambdaFormTestCase(TestMethods testMethod) {
+        this.testMethod = testMethod;
+    }
+
+    public TestMethods getTestMethod() {
+        return testMethod;
+    }
+
+    /**
+     * Routine that executes a test case.
+     */
+    public abstract void doTest();
+
+    /**
+     * Runs a number of test cases defined by the size of testCases list.
+     *
+     * @param ctor constructor of LambdaFormCachingTest or its child classes
+     * object.
+     * @param testMethods list of test methods
+     */
+    public static void runTests(Function<TestMethods, LambdaFormTestCase> ctor, Collection<TestMethods> testMethods) {
+        boolean passed = true;
+        int testCounter = 0;
+        int failCounter = 0;
+        long iterations = Math.max(1, Helper.TEST_LIMIT / testMethods.size());
+        for (long i = 0; i < iterations; i++) {
+            System.err.println(String.format("Iteration %d:", i));
+            for (TestMethods testMethod : testMethods) {
+                LambdaFormTestCase testCase = ctor.apply(testMethod);
+                try {
+                    System.err.printf("Tested LF caching feature with MethodHandles.%s method.%n",
+                            testCase.getTestMethod().name);
+                    testCase.doTest();
+                    System.err.println("PASSED");
+                } catch (Throwable t) {
+                    t.printStackTrace();
+                    System.err.println("FAILED");
+                    passed = false;
+                    failCounter++;
+                }
+                testCounter++;
+            }
+        }
+        if (!passed) {
+            throw new Error(String.format("%d of %d test cases FAILED! %n"
+                    + "Rerun the test with the same \"-Dseed=\" option as in the log file!",
+                    failCounter, testCounter));
+        } else {
+            System.err.println(String.format("All %d test cases PASSED!", testCounter));
+        }
+    }
+}