MethodHandles: Track libcore change eb497095e03068459.
Adds tests for Lookup.unreflect*
Bug: 30550796
Test: make test-art-host
Change-Id: Iba28fa59b9a67cdb1ce894e1c7f244f95e43542b
diff --git a/test/956-methodhandles/src/Main.java b/test/956-methodhandles/src/Main.java
index 44c0447..d824c60 100644
--- a/test/956-methodhandles/src/Main.java
+++ b/test/956-methodhandles/src/Main.java
@@ -20,6 +20,10 @@
import java.lang.invoke.MethodType;
import java.lang.invoke.WrongMethodTypeException;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
public class Main {
public static class A {
@@ -59,6 +63,7 @@
testfindSpecial_invokeDirectBehaviour();
testExceptionDetailMessages();
testfindVirtual();
+ testUnreflects();
}
public static void testfindSpecial_invokeSuperBehaviour() throws Throwable {
@@ -262,6 +267,183 @@
System.out.println("Unexpected return value for BarImpl#superPackageMethod: " + str);
}
}
+
+ static class UnreflectTester {
+ public String publicField;
+ private String privateField;
+
+ public static String publicStaticField = "publicStaticValue";
+ private static String privateStaticField = "privateStaticValue";
+
+ private UnreflectTester(String val) {
+ publicField = val;
+ privateField = val;
+ }
+
+ // NOTE: The boolean constructor argument only exists to give this a
+ // different signature.
+ public UnreflectTester(String val, boolean unused) {
+ this(val);
+ }
+
+ private static String privateStaticMethod() {
+ return "privateStaticMethod";
+ }
+
+ private String privateMethod() {
+ return "privateMethod";
+ }
+
+ public static String publicStaticMethod() {
+ return "publicStaticMethod";
+ }
+
+ public String publicMethod() {
+ return "publicMethod";
+ }
+ }
+
+ public static void testUnreflects() throws Throwable {
+ UnreflectTester instance = new UnreflectTester("unused");
+ Method publicMethod = UnreflectTester.class.getMethod("publicMethod");
+
+ MethodHandle mh = MethodHandles.lookup().unreflect(publicMethod);
+ assertEquals("publicMethod", (String) mh.invoke(instance));
+ assertEquals("publicMethod", (String) mh.invokeExact(instance));
+
+ Method publicStaticMethod = UnreflectTester.class.getMethod("publicStaticMethod");
+ mh = MethodHandles.lookup().unreflect(publicStaticMethod);
+ assertEquals("publicStaticMethod", (String) mh.invoke());
+ assertEquals("publicStaticMethod", (String) mh.invokeExact());
+
+ Method privateMethod = UnreflectTester.class.getDeclaredMethod("privateMethod");
+ try {
+ mh = MethodHandles.lookup().unreflect(privateMethod);
+ fail();
+ } catch (IllegalAccessException expected) {}
+
+ privateMethod.setAccessible(true);
+ mh = MethodHandles.lookup().unreflect(privateMethod);
+ assertEquals("privateMethod", (String) mh.invoke(instance));
+ assertEquals("privateMethod", (String) mh.invokeExact(instance));
+
+ Method privateStaticMethod = UnreflectTester.class.getDeclaredMethod("privateStaticMethod");
+ try {
+ mh = MethodHandles.lookup().unreflect(privateStaticMethod);
+ fail();
+ } catch (IllegalAccessException expected) {}
+
+ privateStaticMethod.setAccessible(true);
+ mh = MethodHandles.lookup().unreflect(privateStaticMethod);
+ assertEquals("privateStaticMethod", (String) mh.invoke());
+ assertEquals("privateStaticMethod", (String) mh.invokeExact());
+
+ Constructor privateConstructor = UnreflectTester.class.getDeclaredConstructor(String.class);
+ try {
+ mh = MethodHandles.lookup().unreflectConstructor(privateConstructor);
+ fail();
+ } catch (IllegalAccessException expected) {}
+
+ privateConstructor.setAccessible(true);
+ mh = MethodHandles.lookup().unreflectConstructor(privateConstructor);
+ // TODO(narayan): Method handle constructor invokes are not supported yet.
+ //
+ // UnreflectTester tester = (UnreflectTester) mh.invoke("foo");
+ // UnreflectTester tester = (UnreflectTester) mh.invoke("fooExact");
+
+ Constructor publicConstructor = UnreflectTester.class.getConstructor(String.class,
+ boolean.class);
+ mh = MethodHandles.lookup().unreflectConstructor(publicConstructor);
+ // TODO(narayan): Method handle constructor invokes are not supported yet.
+ //
+ // UnreflectTester tester = (UnreflectTester) mh.invoke("foo");
+ // UnreflectTester tester = (UnreflectTester) mh.invoke("fooExact");
+
+ // TODO(narayan): Non exact invokes for field sets/gets are not implemented yet.
+ //
+ // assertEquals("instanceValue", (String) mh.invoke(new UnreflectTester("instanceValue")));
+ Field publicField = UnreflectTester.class.getField("publicField");
+ mh = MethodHandles.lookup().unreflectGetter(publicField);
+ instance = new UnreflectTester("instanceValue");
+ assertEquals("instanceValue", (String) mh.invokeExact(instance));
+
+ mh = MethodHandles.lookup().unreflectSetter(publicField);
+ instance = new UnreflectTester("instanceValue");
+ mh.invokeExact(instance, "updatedInstanceValue");
+ assertEquals("updatedInstanceValue", instance.publicField);
+
+ Field publicStaticField = UnreflectTester.class.getField("publicStaticField");
+ mh = MethodHandles.lookup().unreflectGetter(publicStaticField);
+ UnreflectTester.publicStaticField = "updatedStaticValue";
+ assertEquals("updatedStaticValue", (String) mh.invokeExact());
+
+ mh = MethodHandles.lookup().unreflectSetter(publicStaticField);
+ UnreflectTester.publicStaticField = "updatedStaticValue";
+ mh.invokeExact("updatedStaticValue2");
+ assertEquals("updatedStaticValue2", UnreflectTester.publicStaticField);
+
+ Field privateField = UnreflectTester.class.getDeclaredField("privateField");
+ try {
+ mh = MethodHandles.lookup().unreflectGetter(privateField);
+ fail();
+ } catch (IllegalAccessException expected) {
+ }
+ try {
+ mh = MethodHandles.lookup().unreflectSetter(privateField);
+ fail();
+ } catch (IllegalAccessException expected) {
+ }
+
+ privateField.setAccessible(true);
+
+ mh = MethodHandles.lookup().unreflectGetter(privateField);
+ instance = new UnreflectTester("instanceValue");
+ assertEquals("instanceValue", (String) mh.invokeExact(instance));
+
+ mh = MethodHandles.lookup().unreflectSetter(privateField);
+ instance = new UnreflectTester("instanceValue");
+ mh.invokeExact(instance, "updatedInstanceValue");
+ assertEquals("updatedInstanceValue", instance.privateField);
+
+ Field privateStaticField = UnreflectTester.class.getDeclaredField("privateStaticField");
+ try {
+ mh = MethodHandles.lookup().unreflectGetter(privateStaticField);
+ fail();
+ } catch (IllegalAccessException expected) {
+ }
+ try {
+ mh = MethodHandles.lookup().unreflectSetter(privateStaticField);
+ fail();
+ } catch (IllegalAccessException expected) {
+ }
+
+ privateStaticField.setAccessible(true);
+ mh = MethodHandles.lookup().unreflectGetter(privateStaticField);
+ privateStaticField.set(null, "updatedStaticValue");
+ assertEquals("updatedStaticValue", (String) mh.invokeExact());
+
+ mh = MethodHandles.lookup().unreflectSetter(privateStaticField);
+ privateStaticField.set(null, "updatedStaticValue");
+ mh.invokeExact("updatedStaticValue2");
+ assertEquals("updatedStaticValue2", (String) privateStaticField.get(null));
+ }
+
+ public static void assertEquals(String s1, String s2) {
+ if (s1 == s2) {
+ return;
+ }
+
+ if (s1 != null && s2 != null && s1.equals(s2)) {
+ return;
+ }
+
+ throw new AssertionError("assertEquals s1: " + s1 + ", s2: " + s2);
+ }
+
+ public static void fail() {
+ System.out.println("fail");
+ Thread.dumpStack();
+ }
}
