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package com.oracle.truffle.nfi.test;

import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.nfi.test.interop.NullObject;
import com.oracle.truffle.nfi.test.interop.TestCallback;
import com.oracle.truffle.tck.TruffleRunner;
import com.oracle.truffle.tck.TruffleRunner.Inject;
import java.util.ArrayList;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
@Parameterized.UseParametersRunnerFactory(TruffleRunner.ParametersFactory.class)
public class WrappedPrimitiveNFITest extends NFITest {

    private static class TestObject implements TruffleObject {
    }

    private static final Object[] ARGUMENTS = {
                    false, (byte) 42, (short) 42, (char) 42, 42, (long) 42, (float) 42, (double) 42, //
                    8472, Integer.MAX_VALUE, Integer.MIN_VALUE, //
                    "Hello, World!", new TestObject(), new NullObject()
    };

    @Parameters(name = "{1}")
    public static List<Object[]> getParameters() {
        ArrayList<Object[]> ret = new ArrayList<>(ARGUMENTS.length);
        for (Object arg : ARGUMENTS) {
            ret.add(new Object[]{arg, arg.getClass().getSimpleName()});
        }
        return ret;
    }

    @Parameter(0) public Object argument;
    @Parameter(1) public String argumentType;

    private final TestCallback getObject = new TestCallback(0, (args) -> {
        return argument;
    });

    private final TestCallback verifyObject = new TestCallback(2, (args) -> {
        if (argument instanceof TruffleObject) {
            Assert.assertSame("arg 1", argument, args[0]);
            Assert.assertSame("arg 2", argument, args[1]);
        } else {
            // everything else is considered a value type by Truffle, so identity can be lost
            Assert.assertEquals("arg 1", argument, args[0]);
            Assert.assertEquals("arg 2", argument, args[1]);
        }
        return argument;
    });

    public static class PassObjectNode extends SendExecuteNode {

        public PassObjectNode() {
            super("pass_object", "(object, ():object, (object, object):object) : object");
        }
    }

    @Test
    public void passObjectTest(@Inject(PassObjectNode.class) CallTarget target) {
        Object ret = target.call(argument, getObject, verifyObject);
        if (argument instanceof TruffleObject) {
            Assert.assertSame("return value", argument, ret);
        } else {
            // everything else is considered a value type by Truffle, so identity can be lost
            Assert.assertEquals("return value", argument, ret);
        }
    }
}