nashorn/test/src/jdk/dynalink/beans/test/BeansLinkerTest.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2015, 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.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * 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.
  */
 package jdk.dynalink.beans.test;

 import static jdk.dynalink.StandardOperation.CALL;
 import static jdk.dynalink.StandardOperation.GET_ELEMENT;
 import static jdk.dynalink.StandardOperation.GET_METHOD;
 import static jdk.dynalink.StandardOperation.GET_PROPERTY;
 import static jdk.dynalink.StandardOperation.SET_ELEMENT;
 import static jdk.dynalink.StandardOperation.SET_PROPERTY;

 import java.lang.invoke.MethodHandles;
 import java.lang.invoke.MethodType;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
 import java.util.regex.Pattern;
 import java.util.stream.Stream;
 import jdk.dynalink.CallSiteDescriptor;
 import jdk.dynalink.CompositeOperation;
 import jdk.dynalink.DynamicLinkerFactory;
 import jdk.dynalink.NamedOperation;
 import jdk.dynalink.NoSuchDynamicMethodException;
 import jdk.dynalink.Operation;
 import jdk.dynalink.StandardOperation;
 import jdk.dynalink.support.SimpleRelinkableCallSite;
 import org.testng.Assert;
 import org.testng.annotations.Test;

 public class BeansLinkerTest {
     public static class Bean1 {
         public final int answer = 42;

         public String getName() {
             return "bean1";
         }

         public String someMethod(final String x) {
             return x + "-foo";
         }
     }

     @Test
     public static void testPublicFieldPropertyUnnamedGetter() {
         testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals(42, call(op, new Bean1(), "answer")));
     }

     @Test
     public static void testPublicFieldPropertyNamedGetter() {
         testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals(42, call(named("answer", op), new Bean1())));
     }

     @Test
     public static void testGetterPropertyUnnamedGetter() {
         testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals("bean1", call(op, new Bean1(), "name")));
     }

     @Test
     public static void testGetterPropertyNamedGetter() {
         testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals("bean1", call(named("name", op), new Bean1())));
     }

     @Test
     public static void testMethodUnnamedGetter() {
         testGetterPermutations(GET_METHOD, (op) -> Assert.assertEquals("bar-foo", call(call(op, new Bean1(), "someMethod"), new Bean1(), "bar")));
     }

     @Test
     public static void testMethodNamedGetter() {
         testGetterPermutations(GET_METHOD, (op) -> Assert.assertEquals("bar-foo", call(call(named("someMethod", op), new Bean1()), new Bean1(), "bar")));
     }

     private static final Map<String, String> MAP1 = new HashMap<>();
     static {
         MAP1.put("foo", "bar");
     }

     @Test
     public static void testElementUnnamedGetter() {
         testGetterPermutations(GET_ELEMENT, (op) -> Assert.assertEquals("bar", call(op, MAP1, "foo")));
     }

     @Test
     public static void testElementNamedGetter() {
         testGetterPermutations(GET_ELEMENT, (op) -> Assert.assertEquals("bar", call(named("foo", op), MAP1)));
     }

     public static class Bean2 {
         public int answer;
         private String name;

         public void setName(final String name) {
             this.name = name;
         }
     }

     @Test
     public static void testUnnamedFieldSetter() {
         testSetterPermutations(SET_PROPERTY, (op) -> {
             final Bean2 bean2 = new Bean2();
             call(op, bean2, "answer", 12);
             Assert.assertEquals(bean2.answer, 12);
         });
     }

     @Test
     public static void testNamedFieldSetter() {
         testSetterPermutations(SET_PROPERTY, (op) -> {
             final Bean2 bean2 = new Bean2();
             call(named("answer", op), bean2, 14);
             Assert.assertEquals(bean2.answer, 14);
         });
     }

     @Test
     public static void testUnnamedPropertySetter() {
         testSetterPermutations(SET_PROPERTY, (op) -> {
             final Bean2 bean2 = new Bean2();
             call(op, bean2, "name", "boo");
             Assert.assertEquals(bean2.name, "boo");
         });
     }

     @Test
     public static void testNamedPropertySetter() {
         testSetterPermutations(SET_PROPERTY, (op) -> {
             final Bean2 bean2 = new Bean2();
             call(named("name", op), bean2, "blah");
             Assert.assertEquals(bean2.name, "blah");
         });
     }

     private static final Pattern GET_ELEMENT_THEN_PROPERTY_PATTERN = Pattern.compile(".*GET_ELEMENT.*GET_PROPERTY.*");

     @Test
     public static void testUnnamedElementAndPropertyGetter() {
         final Map<String, Object> map = new HashMap<>();
         map.put("empty", true);
         testGetterPermutations(GET_ELEMENT_THEN_PROPERTY_PATTERN, 4, (op) -> Assert.assertEquals(true, call(op, map, "empty")));
     }

     @Test
     public static void testNamedElementAndPropertyGetter() {
         final Map<String, Object> map = new HashMap<>();
         map.put("empty", true);
         testGetterPermutations(GET_ELEMENT_THEN_PROPERTY_PATTERN, 4, (op) -> Assert.assertEquals(true, call(named("empty", op), map)));
     }

     private static final Pattern GET_PROPERTY_THEN_ELEMENT_PATTERN = Pattern.compile(".*GET_PROPERTY.*GET_ELEMENT.*");

     @Test
     public static void testUnnamedPropertyAndElementGetter() {
         final Map<String, Object> map = new HashMap<>();
         map.put("empty", true);
         testGetterPermutations(GET_PROPERTY_THEN_ELEMENT_PATTERN, 4, (op) -> Assert.assertEquals(false, call(op, map, "empty")));
     }

     @Test
     public static void testNamedPropertyAndElementGetter() {
         final Map<String, Object> map = new HashMap<>();
         map.put("empty", true);
         testGetterPermutations(GET_PROPERTY_THEN_ELEMENT_PATTERN, 4, (op) -> Assert.assertEquals(false, call(named("empty", op), map)));
     }

     public static class MapWithProperty extends HashMap<String, Object> {
         private String name;

         public void setName(final String name) {
             this.name = name;
         }
     }

     @Test
     public static void testUnnamedPropertyAndElementSetter() {
         final MapWithProperty map = new MapWithProperty();
         map.put("name", "element");

         call(ops(SET_PROPERTY, SET_ELEMENT), map, "name", "property");
         Assert.assertEquals("property", map.name);
         Assert.assertEquals("element", map.get("name"));

         call(ops(SET_ELEMENT, SET_PROPERTY), map, "name", "element2");
         Assert.assertEquals("property", map.name);
         Assert.assertEquals("element2", map.get("name"));
     }

     @Test
     public static void testMissingMembersAtLinkTime() {
         testPermutations(GETTER_PERMUTATIONS, (op) -> expectNoSuchDynamicMethodException(()-> call(named("foo", op), new Object())));
         testPermutations(SETTER_PERMUTATIONS, (op) -> expectNoSuchDynamicMethodException(()-> call(named("foo", op), new Object(), "newValue")));
     }

     @Test
     public static void testMissingMembersAtRunTime() {
         call(GET_ELEMENT, new ArrayList<>(), "foo");
         Stream.of(new HashMap(), new ArrayList(), new Object[0]).forEach((receiver) -> {
             testPermutations(GETTER_PERMUTATIONS, (op) -> { System.err.println(op + " " + receiver.getClass().getName()); Assert.assertNull(call(op, receiver, "foo"));});
             // No assertion for the setter; we just expect it to silently succeed
             testPermutations(SETTER_PERMUTATIONS, (op) -> call(op, receiver, "foo", "newValue"));
         });
     }

     private static void expectNoSuchDynamicMethodException(final Runnable r) {
         try {
             r.run();
             Assert.fail("Should've thrown NoSuchDynamicMethodException");
         } catch(final NoSuchDynamicMethodException e) {
         }
     }

     private static Operation[] GETTER_PERMUTATIONS = new Operation[] {
         GET_PROPERTY,
         GET_METHOD,
         GET_ELEMENT,
         ops(GET_PROPERTY, GET_ELEMENT),
         ops(GET_PROPERTY, GET_METHOD),
         ops(GET_ELEMENT,  GET_PROPERTY),
         ops(GET_ELEMENT,  GET_METHOD),
         ops(GET_METHOD,   GET_PROPERTY),
         ops(GET_METHOD,   GET_ELEMENT),
         ops(GET_PROPERTY, GET_ELEMENT,  GET_METHOD),
         ops(GET_PROPERTY, GET_METHOD,   GET_ELEMENT),
         ops(GET_ELEMENT,  GET_PROPERTY, GET_METHOD),
         ops(GET_ELEMENT,  GET_METHOD,   GET_PROPERTY),
         ops(GET_METHOD,   GET_PROPERTY, GET_ELEMENT),
         ops(GET_METHOD,   GET_ELEMENT,  GET_PROPERTY),
     };

     private static Operation[] SETTER_PERMUTATIONS = new Operation[] {
         SET_PROPERTY,
         SET_ELEMENT,
         ops(SET_PROPERTY, SET_ELEMENT),
         ops(SET_ELEMENT,  SET_PROPERTY)
     };

     private static void testPermutations(final Operation[] ops, final StandardOperation requiredOp, final int expectedCount, final Consumer<Operation> test) {
         testPermutationsWithFilter(ops, (op)->CompositeOperation.contains(op, requiredOp), expectedCount, test);
     }

     private static void testPermutations(final Operation[] ops, final Pattern regex, final int expectedCount, final Consumer<Operation> test) {
         testPermutationsWithFilter(ops, (op)->regex.matcher(op.toString()).matches(), expectedCount, test);
     }

     private static void testPermutations(final Operation[] ops, final Consumer<Operation> test) {
         testPermutationsWithFilter(ops, (op)->true, ops.length, test);
     }

     private static void testPermutationsWithFilter(final Operation[] ops, final Predicate<Operation> filter, final int expectedCount, final Consumer<Operation> test) {
         final int[] counter = new int[1];
         Stream.of(ops).filter(filter).forEach((op)-> { counter[0]++; test.accept(op); });
         Assert.assertEquals(counter[0], expectedCount);
     }

     private static void testGetterPermutations(final StandardOperation requiredOp, final Consumer<Operation> test) {
         testPermutations(GETTER_PERMUTATIONS, requiredOp, 11, test);
     }

     private static void testGetterPermutations(final Pattern regex, final int expectedCount, final Consumer<Operation> test) {
         testPermutations(GETTER_PERMUTATIONS, regex, expectedCount, test);
     }

     private static void testSetterPermutations(final StandardOperation requiredOp, final Consumer<Operation> test) {
         testPermutations(SETTER_PERMUTATIONS, requiredOp, 3, test);
     }

     private static Object call(final Operation op, final Object... args) {
         try {
             return new DynamicLinkerFactory().createLinker().link(
                     new SimpleRelinkableCallSite(new CallSiteDescriptor(
                             MethodHandles.publicLookup(), op, t(args.length))))
                             .dynamicInvoker().invokeWithArguments(args);
         } catch (final Error|RuntimeException e) {
             throw e;
         } catch (final Throwable t) {
             throw new RuntimeException(t);
         }
     }

     private static Object call(final Object... args) {
         return call(CALL, args);
     }

     private static Operation named(final Object name, final Operation... ops) {
         return new NamedOperation(ops(ops), name);
     }

     private static Operation ops(final Operation... ops) {
         return ops.length == 1 ? ops[0] : new CompositeOperation(ops);
     }

     private static MethodType t(final int argCount) {
         return MethodType.methodType(Object.class, Collections.nCopies(argCount, Object.class));
     }
 }
	/*
	* Copyright (c) 2015, 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. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* 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.
	*/
	package jdk.dynalink.beans.test;

	import static jdk.dynalink.StandardOperation.CALL;
	import static jdk.dynalink.StandardOperation.GET_ELEMENT;
	import static jdk.dynalink.StandardOperation.GET_METHOD;
	import static jdk.dynalink.StandardOperation.GET_PROPERTY;
	import static jdk.dynalink.StandardOperation.SET_ELEMENT;
	import static jdk.dynalink.StandardOperation.SET_PROPERTY;

	import java.lang.invoke.MethodHandles;
	import java.lang.invoke.MethodType;
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.Map;
	import java.util.function.Consumer;
	import java.util.function.Predicate;
	import java.util.regex.Pattern;
	import java.util.stream.Stream;
	import jdk.dynalink.CallSiteDescriptor;
	import jdk.dynalink.CompositeOperation;
	import jdk.dynalink.DynamicLinkerFactory;
	import jdk.dynalink.NamedOperation;
	import jdk.dynalink.NoSuchDynamicMethodException;
	import jdk.dynalink.Operation;
	import jdk.dynalink.StandardOperation;
	import jdk.dynalink.support.SimpleRelinkableCallSite;
	import org.testng.Assert;
	import org.testng.annotations.Test;

	public class BeansLinkerTest {
	public static class Bean1 {
	public final int answer = 42;

	public String getName() {
	return "bean1";
	}

	public String someMethod(final String x) {
	return x + "-foo";
	}
	}

	@Test
	public static void testPublicFieldPropertyUnnamedGetter() {
	testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals(42, call(op, new Bean1(), "answer")));
	}

	@Test
	public static void testPublicFieldPropertyNamedGetter() {
	testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals(42, call(named("answer", op), new Bean1())));
	}

	@Test
	public static void testGetterPropertyUnnamedGetter() {
	testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals("bean1", call(op, new Bean1(), "name")));
	}

	@Test
	public static void testGetterPropertyNamedGetter() {
	testGetterPermutations(GET_PROPERTY, (op) -> Assert.assertEquals("bean1", call(named("name", op), new Bean1())));
	}

	@Test
	public static void testMethodUnnamedGetter() {
	testGetterPermutations(GET_METHOD, (op) -> Assert.assertEquals("bar-foo", call(call(op, new Bean1(), "someMethod"), new Bean1(), "bar")));
	}

	@Test
	public static void testMethodNamedGetter() {
	testGetterPermutations(GET_METHOD, (op) -> Assert.assertEquals("bar-foo", call(call(named("someMethod", op), new Bean1()), new Bean1(), "bar")));
	}

	private static final Map<String, String> MAP1 = new HashMap<>();
	static {
	MAP1.put("foo", "bar");
	}

	@Test
	public static void testElementUnnamedGetter() {
	testGetterPermutations(GET_ELEMENT, (op) -> Assert.assertEquals("bar", call(op, MAP1, "foo")));
	}

	@Test
	public static void testElementNamedGetter() {
	testGetterPermutations(GET_ELEMENT, (op) -> Assert.assertEquals("bar", call(named("foo", op), MAP1)));
	}

	public static class Bean2 {
	public int answer;
	private String name;

	public void setName(final String name) {
	this.name = name;
	}
	}

	@Test
	public static void testUnnamedFieldSetter() {
	testSetterPermutations(SET_PROPERTY, (op) -> {
	final Bean2 bean2 = new Bean2();
	call(op, bean2, "answer", 12);
	Assert.assertEquals(bean2.answer, 12);
	});
	}

	@Test
	public static void testNamedFieldSetter() {
	testSetterPermutations(SET_PROPERTY, (op) -> {
	final Bean2 bean2 = new Bean2();
	call(named("answer", op), bean2, 14);
	Assert.assertEquals(bean2.answer, 14);
	});
	}

	@Test
	public static void testUnnamedPropertySetter() {
	testSetterPermutations(SET_PROPERTY, (op) -> {
	final Bean2 bean2 = new Bean2();
	call(op, bean2, "name", "boo");
	Assert.assertEquals(bean2.name, "boo");
	});
	}

	@Test
	public static void testNamedPropertySetter() {
	testSetterPermutations(SET_PROPERTY, (op) -> {
	final Bean2 bean2 = new Bean2();
	call(named("name", op), bean2, "blah");
	Assert.assertEquals(bean2.name, "blah");
	});
	}

	private static final Pattern GET_ELEMENT_THEN_PROPERTY_PATTERN = Pattern.compile(".GET_ELEMENT.GET_PROPERTY.*");

	@Test
	public static void testUnnamedElementAndPropertyGetter() {
	final Map<String, Object> map = new HashMap<>();
	map.put("empty", true);
	testGetterPermutations(GET_ELEMENT_THEN_PROPERTY_PATTERN, 4, (op) -> Assert.assertEquals(true, call(op, map, "empty")));
	}

	@Test
	public static void testNamedElementAndPropertyGetter() {
	final Map<String, Object> map = new HashMap<>();
	map.put("empty", true);
	testGetterPermutations(GET_ELEMENT_THEN_PROPERTY_PATTERN, 4, (op) -> Assert.assertEquals(true, call(named("empty", op), map)));
	}

	private static final Pattern GET_PROPERTY_THEN_ELEMENT_PATTERN = Pattern.compile(".GET_PROPERTY.GET_ELEMENT.*");

	@Test
	public static void testUnnamedPropertyAndElementGetter() {
	final Map<String, Object> map = new HashMap<>();
	map.put("empty", true);
	testGetterPermutations(GET_PROPERTY_THEN_ELEMENT_PATTERN, 4, (op) -> Assert.assertEquals(false, call(op, map, "empty")));
	}

	@Test
	public static void testNamedPropertyAndElementGetter() {
	final Map<String, Object> map = new HashMap<>();
	map.put("empty", true);
	testGetterPermutations(GET_PROPERTY_THEN_ELEMENT_PATTERN, 4, (op) -> Assert.assertEquals(false, call(named("empty", op), map)));
	}

	public static class MapWithProperty extends HashMap<String, Object> {
	private String name;

	public void setName(final String name) {
	this.name = name;
	}
	}

	@Test
	public static void testUnnamedPropertyAndElementSetter() {
	final MapWithProperty map = new MapWithProperty();
	map.put("name", "element");

	call(ops(SET_PROPERTY, SET_ELEMENT), map, "name", "property");
	Assert.assertEquals("property", map.name);
	Assert.assertEquals("element", map.get("name"));

	call(ops(SET_ELEMENT, SET_PROPERTY), map, "name", "element2");
	Assert.assertEquals("property", map.name);
	Assert.assertEquals("element2", map.get("name"));
	}

	@Test
	public static void testMissingMembersAtLinkTime() {
	testPermutations(GETTER_PERMUTATIONS, (op) -> expectNoSuchDynamicMethodException(()-> call(named("foo", op), new Object())));
	testPermutations(SETTER_PERMUTATIONS, (op) -> expectNoSuchDynamicMethodException(()-> call(named("foo", op), new Object(), "newValue")));
	}

	@Test
	public static void testMissingMembersAtRunTime() {
	call(GET_ELEMENT, new ArrayList<>(), "foo");
	Stream.of(new HashMap(), new ArrayList(), new Object[0]).forEach((receiver) -> {
	testPermutations(GETTER_PERMUTATIONS, (op) -> { System.err.println(op + " " + receiver.getClass().getName()); Assert.assertNull(call(op, receiver, "foo"));});
	// No assertion for the setter; we just expect it to silently succeed
	testPermutations(SETTER_PERMUTATIONS, (op) -> call(op, receiver, "foo", "newValue"));
	});
	}

	private static void expectNoSuchDynamicMethodException(final Runnable r) {
	try {
	r.run();
	Assert.fail("Should've thrown NoSuchDynamicMethodException");
	} catch(final NoSuchDynamicMethodException e) {
	}
	}

	private static Operation[] GETTER_PERMUTATIONS = new Operation[] {
	GET_PROPERTY,
	GET_METHOD,
	GET_ELEMENT,
	ops(GET_PROPERTY, GET_ELEMENT),
	ops(GET_PROPERTY, GET_METHOD),
	ops(GET_ELEMENT, GET_PROPERTY),
	ops(GET_ELEMENT, GET_METHOD),
	ops(GET_METHOD, GET_PROPERTY),
	ops(GET_METHOD, GET_ELEMENT),
	ops(GET_PROPERTY, GET_ELEMENT, GET_METHOD),
	ops(GET_PROPERTY, GET_METHOD, GET_ELEMENT),
	ops(GET_ELEMENT, GET_PROPERTY, GET_METHOD),
	ops(GET_ELEMENT, GET_METHOD, GET_PROPERTY),
	ops(GET_METHOD, GET_PROPERTY, GET_ELEMENT),
	ops(GET_METHOD, GET_ELEMENT, GET_PROPERTY),
	};

	private static Operation[] SETTER_PERMUTATIONS = new Operation[] {
	SET_PROPERTY,
	SET_ELEMENT,
	ops(SET_PROPERTY, SET_ELEMENT),
	ops(SET_ELEMENT, SET_PROPERTY)
	};

	private static void testPermutations(final Operation[] ops, final StandardOperation requiredOp, final int expectedCount, final Consumer<Operation> test) {
	testPermutationsWithFilter(ops, (op)->CompositeOperation.contains(op, requiredOp), expectedCount, test);
	}

	private static void testPermutations(final Operation[] ops, final Pattern regex, final int expectedCount, final Consumer<Operation> test) {
	testPermutationsWithFilter(ops, (op)->regex.matcher(op.toString()).matches(), expectedCount, test);
	}

	private static void testPermutations(final Operation[] ops, final Consumer<Operation> test) {
	testPermutationsWithFilter(ops, (op)->true, ops.length, test);
	}

	private static void testPermutationsWithFilter(final Operation[] ops, final Predicate<Operation> filter, final int expectedCount, final Consumer<Operation> test) {
	final int[] counter = new int[1];
	Stream.of(ops).filter(filter).forEach((op)-> { counter[0]++; test.accept(op); });
	Assert.assertEquals(counter[0], expectedCount);
	}

	private static void testGetterPermutations(final StandardOperation requiredOp, final Consumer<Operation> test) {
	testPermutations(GETTER_PERMUTATIONS, requiredOp, 11, test);
	}

	private static void testGetterPermutations(final Pattern regex, final int expectedCount, final Consumer<Operation> test) {
	testPermutations(GETTER_PERMUTATIONS, regex, expectedCount, test);
	}

	private static void testSetterPermutations(final StandardOperation requiredOp, final Consumer<Operation> test) {
	testPermutations(SETTER_PERMUTATIONS, requiredOp, 3, test);
	}

	private static Object call(final Operation op, final Object... args) {
	try {
	return new DynamicLinkerFactory().createLinker().link(
	new SimpleRelinkableCallSite(new CallSiteDescriptor(
	MethodHandles.publicLookup(), op, t(args.length))))
	.dynamicInvoker().invokeWithArguments(args);
	} catch (final Error\|RuntimeException e) {
	throw e;
	} catch (final Throwable t) {
	throw new RuntimeException(t);
	}
	}

	private static Object call(final Object... args) {
	return call(CALL, args);
	}

	private static Operation named(final Object name, final Operation... ops) {
	return new NamedOperation(ops(ops), name);
	}

	private static Operation ops(final Operation... ops) {
	return ops.length == 1 ? ops[0] : new CompositeOperation(ops);
	}

	private static MethodType t(final int argCount) {
	return MethodType.methodType(Object.class, Collections.nCopies(argCount, Object.class));
	}
	}