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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * 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).

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/* @test

 * @summary unit tests for java.lang.invoke.MethodHandles

 * @run testng/othervm -ea -esa test.java.lang.invoke.VarArgsTest

 */

package test.java.lang.invoke;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

import java.lang.invoke.MethodType;

import java.util.Arrays;

import java.util.List;

import static java.lang.invoke.MethodHandles.*;

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

import static org.testng.AssertJUnit.*;

import org.testng.annotations.*;

public class VarArgsTest {

    @Test

    public void testWithVarargs() throws Throwable {

        MethodHandle deepToString = publicLookup()

            .findStatic(Arrays.class, "deepToString", methodType(String.class, Object[].class));

        assertFalse(deepToString.isVarargsCollector());

        MethodHandle ts = deepToString.withVarargs(false);

        assertFalse(ts.isVarargsCollector());

        MethodHandle ts1 = deepToString.withVarargs(true);

        assertTrue(ts1.isVarargsCollector());

        assertEquals("[won]", (String) ts1.invokeExact(new Object[]{"won"}));

        assertEquals("[won]", (String) ts1.invoke(new Object[]{"won"}));

        assertEquals("[won]", (String) ts1.invoke("won"));

        assertEquals("[won, won]", (String) ts1.invoke("won", "won"));

        assertEquals("[won, won]", (String) ts1.invoke(new Object[]{"won", "won"}));

        assertEquals("[[won]]", (String) ts1.invoke((Object) new Object[]{"won"}));

    }

    @Test

    public void testWithVarargs2() throws Throwable {

        MethodHandle asList = publicLookup()

            .findStatic(Arrays.class, "asList", methodType(List.class, Object[].class));

        MethodHandle asListWithVarargs = asList.withVarargs(asList.isVarargsCollector());

        assert(asListWithVarargs.isVarargsCollector());

        assertEquals("[]", asListWithVarargs.invoke().toString());

        assertEquals("[1]", asListWithVarargs.invoke(1).toString());

        assertEquals("[two, too]", asListWithVarargs.invoke("two", "too").toString());

    }

    @Test

    @ExpectedExceptions(IllegalArgumentException.class)

    public void testWithVarargsIAE() throws Throwable {

        MethodHandle lenMH = publicLookup()

            .findVirtual(String.class, "length", methodType(int.class));

        MethodHandle lenMHWithVarargs = lenMH.withVarargs(true);

    }

}