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6891770: JSR 292 API needs initial unit tests

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Backport working mlvm regression test to M3 implementation of JSR 292; requires jtreg 4.1

Reviewed-by: twisti
This commit is contained in:
John R Rose 2009-10-21 23:19:48 -07:00
parent 66b96c7d3f
commit c4f814598e
1 changed files with 881 additions and 0 deletions

881
jdk/test/java/dyn/MethodHandlesTest.java Normal file

@ -0,0 +1,881 @@
/*
* Copyright 2009 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/* @test
* @summary unit tests for java.dyn.MethodHandles
* @compile -XDinvokedynamic MethodHandlesTest.java
* @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic jdk.java.dyn.MethodHandlesTest
*/
package jdk.java.dyn;
import java.dyn.*;
import java.dyn.MethodHandles.Lookup;
import java.lang.reflect.*;
import java.util.*;
import org.junit.*;
import static org.junit.Assert.*;
import static org.junit.Assume.assumeTrue;
/**
*
* @author jrose
*/
public class MethodHandlesTest {
// How much output?
static int verbosity = 1;
// Set this true during development if you want to fast-forward to
// a particular new, non-working test. Tests which are known to
// work (or have recently worked) test this flag and return on true.
static boolean CAN_SKIP_WORKING = false;
//static { CAN_SKIP_WORKING = true; }
// Set true to test more calls. If false, some tests are just
// lookups, without exercising the actual method handle.
static boolean DO_MORE_CALLS = false;
@Test
public void testFirst() throws Throwable {
verbosity += 9; try {
// left blank for debugging
} finally { verbosity -= 9; }
}
static final int MAX_ARG_INCREASE = 3;
public MethodHandlesTest() {
}
@Before
public void checkImplementedPlatform() {
boolean platformOK = false;
Properties properties = System.getProperties();
String vers = properties.getProperty("java.vm.version");
String name = properties.getProperty("java.vm.name");
String arch = properties.getProperty("os.arch");
if (arch.equals("i386") &&
(name.contains("Client") || name.contains("Server"))
) {
platformOK = true;
} else {
System.err.println("Skipping tests for unsupported platform: "+Arrays.asList(vers, name, arch));
}
assumeTrue(platformOK);
}
String testName;
int posTests, negTests;
@After
public void printCounts() {
if (verbosity >= 1 && (posTests | negTests) != 0) {
System.out.println();
if (posTests != 0) System.out.println("=== "+testName+": "+posTests+" positive test cases run");
if (negTests != 0) System.out.println("=== "+testName+": "+negTests+" negative test cases run");
}
}
void countTest(boolean positive) {
if (positive) ++posTests;
else ++negTests;
}
void countTest() { countTest(true); }
void startTest(String name) {
if (testName != null) printCounts();
if (verbosity >= 0)
System.out.println(name);
posTests = negTests = 0;
testName = name;
}
@BeforeClass
public static void setUpClass() throws Exception {
calledLog.clear();
calledLog.add(null);
nextArg = 1000000;
}
@AfterClass
public static void tearDownClass() throws Exception {
}
static List<Object> calledLog = new ArrayList<Object>();
static Object logEntry(String name, Object... args) {
return Arrays.asList(name, Arrays.asList(args));
}
static Object called(String name, Object... args) {
Object entry = logEntry(name, args);
calledLog.add(entry);
return entry;
}
static void assertCalled(String name, Object... args) {
Object expected = logEntry(name, args);
Object actual = calledLog.get(calledLog.size() - 1);
if (expected.equals(actual)) return;
System.out.println("assertCalled "+name+":");
System.out.println("expected: "+expected);
System.out.println("actual: "+actual);
System.out.println("ex. types: "+getClasses(expected));
System.out.println("act. types: "+getClasses(actual));
assertEquals("previous method call types", expected, actual);
assertEquals("previous method call", expected, actual);
}
static void printCalled(MethodHandle target, String name, Object... args) {
if (verbosity >= 2)
System.out.println("calling "+logEntry(name, args)+" on "+target);
}
static Object castToWrapper(Object value, Class<?> dst) {
Object wrap = null;
if (value instanceof Number)
wrap = castToWrapperOrNull(((Number)value).longValue(), dst);
if (value instanceof Character)
wrap = castToWrapperOrNull((char)(Character)value, dst);
if (wrap != null) return wrap;
return dst.cast(value);
}
static Object castToWrapperOrNull(long value, Class<?> dst) {
if (dst == int.class || dst == Integer.class)
return (int)(value);
if (dst == long.class || dst == Long.class)
return (long)(value);
if (dst == char.class || dst == Character.class)
return (char)(value);
if (dst == short.class || dst == Short.class)
return (short)(value);
if (dst == float.class || dst == Float.class)
return (float)(value);
if (dst == double.class || dst == Double.class)
return (double)(value);
return null;
}
static int nextArg;
static Object randomArg(Class<?> param) {
Object wrap = castToWrapperOrNull(nextArg, param);
if (wrap != null) {
nextArg++;
return wrap;
}
// import sun.dyn.util.Wrapper;
// Wrapper wrap = Wrapper.forBasicType(dst);
// if (wrap == Wrapper.OBJECT && Wrapper.isWrapperType(dst))
// wrap = Wrapper.forWrapperType(dst);
// if (wrap != Wrapper.OBJECT)
// return wrap.wrap(nextArg++);
if (param.isInterface() || param.isAssignableFrom(String.class))
return "#"+(nextArg++);
else
try {
return param.newInstance();
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
}
return null; // random class not Object, String, Integer, etc.
}
static Object[] randomArgs(Class<?>... params) {
Object[] args = new Object[params.length];
for (int i = 0; i < args.length; i++)
args[i] = randomArg(params[i]);
return args;
}
static Object[] randomArgs(int nargs, Class<?> param) {
Object[] args = new Object[nargs];
for (int i = 0; i < args.length; i++)
args[i] = randomArg(param);
return args;
}
static <T, E extends T> T[] array(Class<T[]> atype, E... a) {
return Arrays.copyOf(a, a.length, atype);
}
static <T> T[] cat(T[] a, T... b) {
int alen = a.length, blen = b.length;
if (blen == 0) return a;
T[] c = Arrays.copyOf(a, alen + blen);
System.arraycopy(b, 0, c, alen, blen);
return c;
}
static Integer[] boxAll(int... vx) {
Integer[] res = new Integer[vx.length];
for (int i = 0; i < res.length; i++) {
res[i] = vx[i];
}
return res;
}
static Object getClasses(Object x) {
if (x == null) return x;
if (x instanceof String) return x; // keep the name
if (x instanceof List) {
// recursively report classes of the list elements
Object[] xa = ((List)x).toArray();
for (int i = 0; i < xa.length; i++)
xa[i] = getClasses(xa[i]);
return Arrays.asList(xa);
}
return x.getClass().getSimpleName();
}
static MethodHandle changeArgTypes(MethodHandle target, Class<?> argType) {
return changeArgTypes(target, 0, 999, argType);
}
static MethodHandle changeArgTypes(MethodHandle target,
int beg, int end, Class<?> argType) {
MethodType targetType = target.type();
end = Math.min(end, targetType.parameterCount());
ArrayList<Class<?>> argTypes = new ArrayList<Class<?>>(targetType.parameterList());
Collections.fill(argTypes.subList(beg, end), argType);
MethodType ttype2 = MethodType.make(targetType.returnType(), argTypes);
return MethodHandles.convertArguments(target, ttype2);
}
// This lookup is good for all members in and under MethodHandlesTest.
static final Lookup PRIVATE = MethodHandles.lookup();
// This lookup is good for package-private members but not private ones.
static final Lookup PACKAGE = PackageSibling.lookup();
// This lookup is good only for public members.
static final Lookup PUBLIC = MethodHandles.Lookup.PUBLIC_LOOKUP;
// Subject methods...
static class Example implements IntExample {
final String name;
public Example() { name = "Example#"+(nextArg++); }
protected Example(String name) { this.name = name; }
protected Example(int x) { this(); called("protected <init>", this, x); }
@Override public String toString() { return name; }
public void v0() { called("v0", this); }
void pkg_v0() { called("pkg_v0", this); }
private void pri_v0() { called("pri_v0", this); }
public static void s0() { called("s0"); }
static void pkg_s0() { called("pkg_s0"); }
private static void pri_s0() { called("pri_s0"); }
public Object v1(Object x) { return called("v1", this, x); }
public Object v2(Object x, Object y) { return called("v2", this, x, y); }
public Object v2(Object x, int y) { return called("v2", this, x, y); }
public Object v2(int x, Object y) { return called("v2", this, x, y); }
public Object v2(int x, int y) { return called("v2", this, x, y); }
public static Object s1(Object x) { return called("s1", x); }
public static Object s2(int x) { return called("s2", x); }
public static Object s3(long x) { return called("s3", x); }
public static Object s4(int x, int y) { return called("s4", x, y); }
public static Object s5(long x, int y) { return called("s5", x, y); }
public static Object s6(int x, long y) { return called("s6", x, y); }
public static Object s7(float x, double y) { return called("s7", x, y); }
}
public static class PubExample extends Example {
}
static class SubExample extends Example {
@Override public void v0() { called("Sub/v0", this); }
@Override void pkg_v0() { called("Sub/pkg_v0", this); }
private SubExample(int x) { called("<init>", this, x); }
public SubExample() { super("SubExample#"+(nextArg++)); }
}
public static interface IntExample {
public void v0();
static class Impl implements IntExample {
public void v0() { called("Int/v0", this); }
final String name;
public Impl() { name = "Example#"+(nextArg++); }
}
}
static final Object[][][] ACCESS_CASES = {
{ { true, PRIVATE } } // only one test case at present
};
static Object[][] accessCases(Class<?> defc, String name) {
return ACCESS_CASES[0];
}
@Test
public void testFindStatic() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("findStatic");
testFindStatic(PubExample.class, void.class, "s0");
testFindStatic(Example.class, void.class, "s0");
testFindStatic(Example.class, void.class, "pkg_s0");
testFindStatic(Example.class, void.class, "pri_s0");
testFindStatic(Example.class, Object.class, "s1", Object.class);
testFindStatic(Example.class, Object.class, "s2", int.class);
testFindStatic(Example.class, Object.class, "s3", long.class);
testFindStatic(Example.class, Object.class, "s4", int.class, int.class);
testFindStatic(Example.class, Object.class, "s5", long.class, int.class);
testFindStatic(Example.class, Object.class, "s6", int.class, long.class);
testFindStatic(Example.class, Object.class, "s7", float.class, double.class);
testFindStatic(false, PRIVATE, Example.class, void.class, "bogus");
}
void testFindStatic(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
for (Object[] ac : accessCases(defc, name)) {
testFindStatic((Boolean)ac[0], (Lookup)ac[1], defc, ret, name, params);
}
}
void testFindStatic(Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
testFindStatic(true, lookup, defc, ret, name, params);
}
void testFindStatic(boolean positive, Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
countTest(positive);
MethodType type = MethodType.make(ret, params);
MethodHandle target = null;
RuntimeException noAccess = null;
try {
target = lookup.findStatic(defc, name, type);
} catch (NoAccessException ex) {
noAccess = ex;
}
if (verbosity >= 2)
System.out.println("findStatic "+lookup+": "+defc+"."+name+"/"+type+" => "+target
+(noAccess == null ? "" : " !! "+noAccess));
if (positive && noAccess != null) throw noAccess;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
assertEquals(type, target.type());
assertTrue(target.toString().contains(name)); // rough check
if (!DO_MORE_CALLS && lookup != PRIVATE) return;
Object[] args = randomArgs(params);
printCalled(target, name, args);
MethodHandles.invoke(target, args);
assertCalled(name, args);
System.out.print(':');
}
@Test
public void testFindVirtual() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("findVirtual");
testFindVirtual(Example.class, void.class, "v0");
testFindVirtual(Example.class, void.class, "pkg_v0");
testFindVirtual(Example.class, void.class, "pri_v0");
testFindVirtual(Example.class, Object.class, "v1", Object.class);
testFindVirtual(Example.class, Object.class, "v2", Object.class, Object.class);
testFindVirtual(Example.class, Object.class, "v2", Object.class, int.class);
testFindVirtual(Example.class, Object.class, "v2", int.class, Object.class);
testFindVirtual(Example.class, Object.class, "v2", int.class, int.class);
testFindVirtual(false, PRIVATE, Example.class, Example.class, void.class, "bogus");
// test dispatch
testFindVirtual(SubExample.class, SubExample.class, void.class, "Sub/v0");
testFindVirtual(SubExample.class, Example.class, void.class, "Sub/v0");
testFindVirtual(SubExample.class, IntExample.class, void.class, "Sub/v0");
testFindVirtual(SubExample.class, SubExample.class, void.class, "Sub/pkg_v0");
testFindVirtual(SubExample.class, Example.class, void.class, "Sub/pkg_v0");
testFindVirtual(Example.class, IntExample.class, void.class, "v0");
testFindVirtual(IntExample.Impl.class, IntExample.class, void.class, "Int/v0");
}
void testFindVirtual(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
Class<?> rcvc = defc;
testFindVirtual(rcvc, defc, ret, name, params);
}
void testFindVirtual(Class<?> rcvc, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
for (Object[] ac : accessCases(defc, name)) {
testFindVirtual((Boolean)ac[0], (Lookup)ac[1], rcvc, defc, ret, name, params);
}
}
void testFindVirtual(Lookup lookup, Class<?> rcvc, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
testFindVirtual(true, lookup, rcvc, defc, ret, name, params);
}
void testFindVirtual(boolean positive, Lookup lookup, Class<?> rcvc, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
countTest(positive);
String methodName = name.substring(1 + name.indexOf('/')); // foo/bar => foo
MethodType type = MethodType.make(ret, params);
MethodHandle target = null;
RuntimeException noAccess = null;
try {
target = lookup.findVirtual(defc, methodName, type);
} catch (NoAccessException ex) {
noAccess = ex;
}
if (verbosity >= 2)
System.out.println("findVirtual "+lookup+": "+defc+"."+name+"/"+type+" => "+target
+(noAccess == null ? "" : " !! "+noAccess));
if (positive && noAccess != null) throw noAccess;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)defc), params);
MethodType typeWithSelf = MethodType.make(ret, paramsWithSelf);
MethodType ttype = target.type();
ttype = ttype.changeParameterType(0, defc); // FIXME: test this
assertEquals(typeWithSelf, ttype);
assertTrue(target.toString().contains(methodName)); // rough check
if (!DO_MORE_CALLS && lookup != PRIVATE) return;
Object[] argsWithSelf = randomArgs(paramsWithSelf);
if (rcvc != defc) argsWithSelf[0] = randomArg(rcvc);
printCalled(target, name, argsWithSelf);
MethodHandles.invoke(target, argsWithSelf);
assertCalled(name, argsWithSelf);
System.out.print(':');
}
@Test
public void testFindSpecial() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("findSpecial");
testFindSpecial(Example.class, void.class, "v0");
testFindSpecial(Example.class, void.class, "pkg_v0");
testFindSpecial(false, PRIVATE, Example.class, void.class, "<init>", int.class);
testFindSpecial(false, PRIVATE, Example.class, void.class, "bogus");
}
void testFindSpecial(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
testFindSpecial(true, PRIVATE, defc, ret, name, params);
testFindSpecial(false, PACKAGE, defc, ret, name, params);
testFindSpecial(false, PUBLIC, defc, ret, name, params);
}
void testFindSpecial(boolean positive, Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
countTest(positive);
MethodType type = MethodType.make(ret, params);
MethodHandle target = null;
RuntimeException noAccess = null;
try {
target = lookup.findSpecial(defc, name, type, defc);
} catch (NoAccessException ex) {
noAccess = ex;
}
if (verbosity >= 2)
System.out.println("findSpecial "+defc+"."+name+"/"+type+" => "+target
+(noAccess == null ? "" : " !! "+noAccess));
if (positive && noAccess != null) throw noAccess;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
Class<?>[] paramsWithSelf = cat(array(Class[].class, (Class)defc), params);
MethodType typeWithSelf = MethodType.make(ret, paramsWithSelf);
MethodType ttype = target.type();
ttype = ttype.changeParameterType(0, defc); // FIXME: test this
assertEquals(typeWithSelf, ttype);
assertTrue(target.toString().contains(name)); // rough check
if (!DO_MORE_CALLS && lookup != PRIVATE) return;
Object[] args = randomArgs(paramsWithSelf);
printCalled(target, name, args);
MethodHandles.invoke(target, args);
assertCalled(name, args);
System.out.print(':');
}
@Test
public void testBind() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("bind");
testBind(Example.class, void.class, "v0");
testBind(Example.class, void.class, "pkg_v0");
testBind(Example.class, void.class, "pri_v0");
testBind(Example.class, Object.class, "v1", Object.class);
testBind(Example.class, Object.class, "v2", Object.class, Object.class);
testBind(Example.class, Object.class, "v2", Object.class, int.class);
testBind(Example.class, Object.class, "v2", int.class, Object.class);
testBind(Example.class, Object.class, "v2", int.class, int.class);
testBind(false, PRIVATE, Example.class, void.class, "bogus");
testBind(SubExample.class, void.class, "Sub/v0");
testBind(SubExample.class, void.class, "Sub/pkg_v0");
testBind(IntExample.Impl.class, void.class, "Int/v0");
}
void testBind(Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
for (Object[] ac : accessCases(defc, name)) {
testBind((Boolean)ac[0], (Lookup)ac[1], defc, ret, name, params);
}
}
void testBind(boolean positive, Lookup lookup, Class<?> defc, Class<?> ret, String name, Class<?>... params) throws Throwable {
countTest(positive);
String methodName = name.substring(1 + name.indexOf('/')); // foo/bar => foo
MethodType type = MethodType.make(ret, params);
Object receiver = randomArg(defc);
MethodHandle target = null;
RuntimeException noAccess = null;
try {
target = lookup.bind(receiver, methodName, type);
} catch (NoAccessException ex) {
noAccess = ex;
}
if (verbosity >= 2)
System.out.println("bind "+receiver+"."+name+"/"+type+" => "+target
+(noAccess == null ? "" : " !! "+noAccess));
if (positive && noAccess != null) throw noAccess;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
assertEquals(type, target.type());
Object[] args = randomArgs(params);
printCalled(target, name, args);
MethodHandles.invoke(target, args);
Object[] argsWithReceiver = cat(array(Object[].class, receiver), args);
assertCalled(name, argsWithReceiver);
System.out.print(':');
}
@Test
public void testUnreflect() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("unreflect");
testUnreflect(Example.class, true, void.class, "s0");
testUnreflect(Example.class, true, void.class, "pkg_s0");
testUnreflect(Example.class, true, void.class, "pri_s0");
testUnreflect(Example.class, true, Object.class, "s1", Object.class);
testUnreflect(Example.class, true, Object.class, "s2", int.class);
//testUnreflect(Example.class, true, Object.class, "s3", long.class);
//testUnreflect(Example.class, true, Object.class, "s4", int.class, int.class);
//testUnreflect(Example.class, true, Object.class, "s5", long.class, int.class);
//testUnreflect(Example.class, true, Object.class, "s6", int.class, long.class);
testUnreflect(Example.class, false, void.class, "v0");
testUnreflect(Example.class, false, void.class, "pkg_v0");
testUnreflect(Example.class, false, void.class, "pri_v0");
testUnreflect(Example.class, false, Object.class, "v1", Object.class);
testUnreflect(Example.class, false, Object.class, "v2", Object.class, Object.class);
testUnreflect(Example.class, false, Object.class, "v2", Object.class, int.class);
testUnreflect(Example.class, false, Object.class, "v2", int.class, Object.class);
testUnreflect(Example.class, false, Object.class, "v2", int.class, int.class);
}
void testUnreflect(Class<?> defc, boolean isStatic, Class<?> ret, String name, Class<?>... params) throws Throwable {
for (Object[] ac : accessCases(defc, name)) {
testUnreflect((Boolean)ac[0], (Lookup)ac[1], defc, isStatic, ret, name, params);
}
}
void testUnreflect(boolean positive, Lookup lookup, Class<?> defc, boolean isStatic, Class<?> ret, String name, Class<?>... params) throws Throwable {
countTest(positive);
MethodType type = MethodType.make(ret, params);
Method rmethod = null;
MethodHandle target = null;
RuntimeException noAccess = null;
try {
rmethod = defc.getDeclaredMethod(name, params);
} catch (NoSuchMethodException ex) {
throw new NoAccessException(ex);
}
assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
try {
target = lookup.unreflect(rmethod);
} catch (NoAccessException ex) {
noAccess = ex;
}
if (verbosity >= 2)
System.out.println("unreflect "+defc+"."+name+"/"+type+" => "+target
+(noAccess == null ? "" : " !! "+noAccess));
if (positive && noAccess != null) throw noAccess;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
Class<?>[] paramsMaybeWithSelf = params;
if (!isStatic) {
paramsMaybeWithSelf = cat(array(Class[].class, (Class)defc), params);
}
MethodType typeMaybeWithSelf = MethodType.make(ret, paramsMaybeWithSelf);
MethodType ttype = target.type();
if (!isStatic)
ttype = ttype.changeParameterType(0, defc); // FIXME: test this
assertEquals(typeMaybeWithSelf, ttype);
Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
printCalled(target, name, argsMaybeWithSelf);
MethodHandles.invoke(target, argsMaybeWithSelf);
assertCalled(name, argsMaybeWithSelf);
System.out.print(':');
}
@Test @Ignore("unimplemented")
public void testUnreflectSpecial() throws Throwable {
Lookup lookup = PRIVATE; // FIXME: test more lookups than this one
startTest("unreflectSpecial");
Method m = null;
MethodHandle expResult = null;
MethodHandle result = lookup.unreflectSpecial(m, Example.class);
assertEquals(expResult, result);
fail("The test case is a prototype.");
}
@Test @Ignore("unimplemented")
public void testUnreflectGetter() throws Throwable {
Lookup lookup = PRIVATE; // FIXME: test more lookups than this one
startTest("unreflectGetter");
Field f = null;
MethodHandle expResult = null;
MethodHandle result = lookup.unreflectGetter(f);
assertEquals(expResult, result);
fail("The test case is a prototype.");
}
@Test @Ignore("unimplemented")
public void testUnreflectSetter() throws Throwable {
Lookup lookup = PRIVATE; // FIXME: test more lookups than this one
startTest("unreflectSetter");
Field f = null;
MethodHandle expResult = null;
MethodHandle result = lookup.unreflectSetter(f);
assertEquals(expResult, result);
fail("The test case is a prototype.");
}
@Test @Ignore("unimplemented")
public void testArrayElementGetter() throws Throwable {
startTest("arrayElementGetter");
Class<?> arrayClass = null;
MethodHandle expResult = null;
MethodHandle result = MethodHandles.arrayElementGetter(arrayClass);
assertEquals(expResult, result);
fail("The test case is a prototype.");
}
@Test @Ignore("unimplemented")
public void testArrayElementSetter() throws Throwable {
startTest("arrayElementSetter");
Class<?> arrayClass = null;
MethodHandle expResult = null;
MethodHandle result = MethodHandles.arrayElementSetter(arrayClass);
assertEquals(expResult, result);
fail("The test case is a prototype.");
}
static class Callee {
static Object id() { return called("id"); }
static Object id(Object x) { return called("id", x); }
static Object id(Object x, Object y) { return called("id", x, y); }
static Object id(Object x, Object y, Object z) { return called("id", x, y, z); }
static Object id(Object... vx) { return called("id", vx); }
static MethodHandle ofType(int n) {
return ofType(Object.class, n);
}
static MethodHandle ofType(Class<?> rtype, int n) {
if (n == -1)
return ofType(MethodType.make(rtype, Object[].class));
return ofType(MethodType.makeGeneric(n).changeReturnType(rtype));
}
static MethodHandle ofType(Class<?> rtype, Class<?>... ptypes) {
return ofType(MethodType.make(rtype, ptypes));
}
static MethodHandle ofType(MethodType type) {
Class<?> rtype = type.returnType();
String pfx = "";
if (rtype != Object.class)
pfx = rtype.getSimpleName().substring(0, 1).toLowerCase();
String name = pfx+"id";
return PRIVATE.findStatic(Callee.class, name, type);
}
}
@Test
public void testConvertArguments() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("convertArguments");
testConvert(Callee.ofType(1), null, "id", int.class);
testConvert(Callee.ofType(1), null, "id", String.class);
testConvert(Callee.ofType(1), null, "id", Integer.class);
testConvert(Callee.ofType(1), null, "id", short.class);
}
void testConvert(MethodHandle id, Class<?> rtype, String name, Class<?>... params) throws Throwable {
testConvert(true, id, rtype, name, params);
}
void testConvert(boolean positive, MethodHandle id, Class<?> rtype, String name, Class<?>... params) throws Throwable {
countTest(positive);
MethodType idType = id.type();
if (rtype == null) rtype = idType.returnType();
for (int i = 0; i < params.length; i++) {
if (params[i] == null) params[i] = idType.parameterType(i);
}
// simulate the pairwise conversion
MethodType newType = MethodType.make(rtype, params);
Object[] args = randomArgs(newType.parameterArray());
Object[] convArgs = args.clone();
for (int i = 0; i < args.length; i++) {
Class<?> src = newType.parameterType(i);
Class<?> dst = idType.parameterType(i);
if (src != dst)
convArgs[i] = castToWrapper(convArgs[i], dst);
}
Object convResult = MethodHandles.invoke(id, convArgs);
{
Class<?> dst = newType.returnType();
Class<?> src = idType.returnType();
if (src != dst)
convResult = castToWrapper(convResult, dst);
}
MethodHandle target = null;
RuntimeException error = null;
try {
target = MethodHandles.convertArguments(id, newType);
} catch (RuntimeException ex) {
error = ex;
}
if (verbosity >= 2)
System.out.println("convert "+id+ " to "+newType+" => "+target
+(error == null ? "" : " !! "+error));
if (positive && error != null) throw error;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
assertEquals(newType, target.type());
printCalled(target, id.toString(), args);
Object result = MethodHandles.invoke(target, args);
assertCalled(name, convArgs);
assertEquals(convResult, result);
System.out.print(':');
}
@Test
public void testInsertArguments() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("insertArguments");
for (int nargs = 0; nargs <= 4; nargs++) {
for (int ins = 0; ins <= 4; ins++) {
if (ins > MAX_ARG_INCREASE) continue; // FIXME Fail_6
for (int pos = 0; pos <= nargs; pos++) {
testInsertArguments(nargs, pos, ins);
}
}
}
}
void testInsertArguments(int nargs, int pos, int ins) throws Throwable {
if (pos != 0 || ins != 1) return; // temp. restriction until MHs.insertArguments
countTest();
MethodHandle target = ValueConversions.varargsArray(nargs + ins);
Object[] args = randomArgs(target.type().parameterArray());
List<Object> resList = Arrays.asList(args);
List<Object> argsToPass = new ArrayList<Object>(resList);
List<Object> argsToInsert = argsToPass.subList(pos, pos + ins);
if (verbosity >= 2)
System.out.println("insert: "+argsToInsert+" into "+target);
MethodHandle target2 = MethodHandles.insertArgument(target, pos,
argsToInsert.get(0));
argsToInsert.clear(); // remove from argsToInsert
Object res2 = MethodHandles.invoke(target2, argsToPass.toArray());
Object res2List = Arrays.asList((Object[])res2);
if (verbosity >= 2)
System.out.println("result: "+res2List);
//if (!resList.equals(res2List))
// System.out.println("*** fail at n/p/i = "+nargs+"/"+pos+"/"+ins+": "+resList+" => "+res2List);
assertEquals(resList, res2List);
}
private static final String MISSING_ARG = "missingArg";
static Object targetIfEquals() {
return called("targetIfEquals");
}
static Object fallbackIfNotEquals() {
return called("fallbackIfNotEquals");
}
static Object targetIfEquals(Object x) {
assertEquals(x, MISSING_ARG);
return called("targetIfEquals", x);
}
static Object fallbackIfNotEquals(Object x) {
assertFalse(x.toString(), x.equals(MISSING_ARG));
return called("fallbackIfNotEquals", x);
}
static Object targetIfEquals(Object x, Object y) {
assertEquals(x, y);
return called("targetIfEquals", x, y);
}
static Object fallbackIfNotEquals(Object x, Object y) {
assertFalse(x.toString(), x.equals(y));
return called("fallbackIfNotEquals", x, y);
}
static Object targetIfEquals(Object x, Object y, Object z) {
assertEquals(x, y);
return called("targetIfEquals", x, y, z);
}
static Object fallbackIfNotEquals(Object x, Object y, Object z) {
assertFalse(x.toString(), x.equals(y));
return called("fallbackIfNotEquals", x, y, z);
}
}
// Local abbreviated copy of sun.dyn.util.ValueConversions
class ValueConversions {
private static final Lookup IMPL_LOOKUP = MethodHandles.lookup();
private static final Object[] NO_ARGS_ARRAY = {};
private static Object[] makeArray(Object... args) { return args; }
private static Object[] array() { return NO_ARGS_ARRAY; }
private static Object[] array(Object a0)
{ return makeArray(a0); }
private static Object[] array(Object a0, Object a1)
{ return makeArray(a0, a1); }
private static Object[] array(Object a0, Object a1, Object a2)
{ return makeArray(a0, a1, a2); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3)
{ return makeArray(a0, a1, a2, a3); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
Object a4)
{ return makeArray(a0, a1, a2, a3, a4); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
Object a4, Object a5)
{ return makeArray(a0, a1, a2, a3, a4, a5); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
Object a4, Object a5, Object a6)
{ return makeArray(a0, a1, a2, a3, a4, a5, a6); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
Object a4, Object a5, Object a6, Object a7)
{ return makeArray(a0, a1, a2, a3, a4, a5, a6, a7); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
Object a4, Object a5, Object a6, Object a7,
Object a8)
{ return makeArray(a0, a1, a2, a3, a4, a5, a6, a7, a8); }
private static Object[] array(Object a0, Object a1, Object a2, Object a3,
Object a4, Object a5, Object a6, Object a7,
Object a8, Object a9)
{ return makeArray(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9); }
static MethodHandle[] makeArrays() {
ArrayList<MethodHandle> arrays = new ArrayList<MethodHandle>();
MethodHandles.Lookup lookup = IMPL_LOOKUP;
for (;;) {
int nargs = arrays.size();
MethodType type = MethodType.makeGeneric(nargs).changeReturnType(Object[].class);
String name = "array";
MethodHandle array = null;
try {
array = lookup.findStatic(ValueConversions.class, name, type);
} catch (NoAccessException ex) {
}
if (array == null) break;
arrays.add(array);
}
assert(arrays.size() == 11); // current number of methods
return arrays.toArray(new MethodHandle[0]);
}
static final MethodHandle[] ARRAYS = makeArrays();
/** Return a method handle that takes the indicated number of Object
* arguments and returns an Object array of them, as if for varargs.
*/
public static MethodHandle varargsArray(int nargs) {
if (nargs < ARRAYS.length)
return ARRAYS[nargs];
// else need to spin bytecode or do something else fancy
throw new UnsupportedOperationException("NYI");
}
}
// This guy tests access from outside the same package member, but inside
// the package itself.
class PackageSibling {
static Lookup lookup() {
return MethodHandles.lookup();
}
}