test/jdk/java/lang/invoke/condy/BootstrapMethodJumboArgsTest.java

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/*
 * @test
 * @bug 8186046
 * @summary Test bootstrap methods throwing an exception
 * @library /java/lang/invoke/common
 * @build test.java.lang.invoke.lib.InstructionHelper
 * @run testng BootstrapMethodJumboArgsTest
 * @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 BootstrapMethodJumboArgsTest
 */

import org.testng.Assert;
import org.testng.annotations.Test;
import test.java.lang.invoke.lib.InstructionHelper;

import java.lang.invoke.ConstantCallSite;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.util.stream.IntStream;

import static java.lang.invoke.MethodType.methodType;

public class BootstrapMethodJumboArgsTest {
    static final MethodHandles.Lookup L = MethodHandles.lookup();


    static Object bsmZero(MethodHandles.Lookup l, String name, Object type,
                          Object... args) {
        Object[] a = args.clone();
        if (type instanceof MethodType) {
            return new ConstantCallSite(MethodHandles.constant(Object[].class, a));
        } else {
            return a;
        }
    }

    static Object bsmOne(MethodHandles.Lookup l, String name, Object type,
                         Object first, Object... args) {
        Object[] a = new Object[args.length + 1];
        a[0] = first;
        System.arraycopy(args, 0, a, 1, args.length);
        if (type instanceof MethodType) {
            return new ConstantCallSite(MethodHandles.constant(Object[].class, a));
        } else {
            return a;
        }
    }

    static Object bsmTwo(MethodHandles.Lookup l, String name, Object type,
                         Object first, Object second, Object... args) {
        Object[] a = new Object[args.length + 2];
        a[0] = first;
        a[1] = second;
        System.arraycopy(args, 0, a, 2, args.length);
        if (type instanceof MethodType) {
            return new ConstantCallSite(MethodHandles.constant(Object[].class, a));
        } else {
            return a;
        }
    }

    @Test
    public void testCondyWithJumboArgs() throws Throwable {
        String[] expected = IntStream.range(0, 1000).mapToObj(Integer::toString).toArray(String[]::new);

        {
            MethodHandle mh = InstructionHelper.ldcDynamicConstant(
                    L, "name", Object[].class,
                    "bsmZero", methodType(Object.class, MethodHandles.Lookup.class, String.class,
                            Object.class, Object[].class), expected);

            Object[] actual = (Object[]) mh.invoke();
            Assert.assertEquals(actual, expected);
        }

        {
            MethodHandle mh = InstructionHelper.ldcDynamicConstant(
                    L, "name", Object[].class,
                    "bsmOne", methodType(Object.class, MethodHandles.Lookup.class, String.class,
                            Object.class, Object.class, Object[].class), expected);

            Object[] actual = (Object[]) mh.invoke();
            Assert.assertEquals(actual, expected);
        }

        {
            MethodHandle mh = InstructionHelper.ldcDynamicConstant(
                    L, "name", Object[].class,
                    "bsmTwo", methodType(Object.class, MethodHandles.Lookup.class, String.class,
                            Object.class, Object.class, Object.class, Object[].class), expected);

            Object[] actual = (Object[]) mh.invoke();
            Assert.assertEquals(actual, expected);
        }
    }

    @Test
    public void testIndyWithJumboArgs() throws Throwable {
        String[] expected = IntStream.range(0, 1000).mapToObj(Integer::toString).toArray(String[]::new);

        {
            MethodHandle mh = InstructionHelper.invokedynamic(
                    L, "name", methodType(Object[].class),
                    "bsmZero", methodType(Object.class, MethodHandles.Lookup.class, String.class,
                            Object.class, Object[].class), expected);

            Object[] actual = (Object[]) mh.invoke();
            Assert.assertEquals(actual, expected);
        }

        {
            MethodHandle mh = InstructionHelper.invokedynamic(
                    L, "name", methodType(Object[].class),
                    "bsmOne", methodType(Object.class, MethodHandles.Lookup.class, String.class,
                            Object.class, Object.class, Object[].class), expected);

            Object[] actual = (Object[]) mh.invoke();
            Assert.assertEquals(actual, expected);
        }

        {
            MethodHandle mh = InstructionHelper.invokedynamic(
                    L, "name", methodType(Object[].class),
                    "bsmTwo", methodType(Object.class, MethodHandles.Lookup.class, String.class,
                            Object.class, Object.class, Object.class, Object[].class), expected);

            Object[] actual = (Object[]) mh.invoke();
            Assert.assertEquals(actual, expected);
        }
    }
}