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/*
* Copyright (c) 2020, 2023, Oracle and/or its affiliates. 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.
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @enablePreview
* @requires jdk.foreign.linker != "UNSUPPORTED"
* @run testng/othervm --enable-native-access=ALL-UNNAMED TestFunctionDescriptor
*/
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.MemorySegment;
import java.lang.invoke.MethodType;
import java.util.List;
import java.util.Optional;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertNotEquals;
import static org.testng.Assert.assertTrue;
public class TestFunctionDescriptor extends NativeTestHelper {
static final String DUMMY_ATTR = "dummy";
@Test
public void testOf() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_DOUBLE, C_LONG_LONG);
assertEquals(fd.argumentLayouts(), List.of(C_DOUBLE, C_LONG_LONG));
Optional<MemoryLayout> returnLayoutOp = fd.returnLayout();
assertTrue(returnLayoutOp.isPresent());
assertEquals(returnLayoutOp.get(), C_INT);
}
@Test
public void testOfVoid() {
FunctionDescriptor fd = FunctionDescriptor.ofVoid(C_DOUBLE, C_LONG_LONG);
assertEquals(fd.argumentLayouts(), List.of(C_DOUBLE, C_LONG_LONG));
Optional<MemoryLayout> returnLayoutOp = fd.returnLayout();
assertFalse(returnLayoutOp.isPresent());
}
@Test
public void testAppendArgumentLayouts() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_DOUBLE, C_LONG_LONG);
fd = fd.appendArgumentLayouts(C_POINTER);
assertEquals(fd.argumentLayouts(), List.of(C_DOUBLE, C_LONG_LONG, C_POINTER));
Optional<MemoryLayout> returnLayoutOp = fd.returnLayout();
assertTrue(returnLayoutOp.isPresent());
assertEquals(returnLayoutOp.get(), C_INT);
}
@Test
public void testChangeReturnLayout() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_DOUBLE, C_LONG_LONG);
fd = fd.changeReturnLayout(C_INT);
assertEquals(fd.argumentLayouts(), List.of(C_DOUBLE, C_LONG_LONG));
Optional<MemoryLayout> returnLayoutOp = fd.returnLayout();
assertTrue(returnLayoutOp.isPresent());
assertEquals(returnLayoutOp.get(), C_INT);
}
@Test
public void testDropReturnLayout() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_DOUBLE, C_LONG_LONG);
fd = fd.dropReturnLayout();
assertEquals(fd.argumentLayouts(), List.of(C_DOUBLE, C_LONG_LONG));
Optional<MemoryLayout> returnLayoutOp = fd.returnLayout();
assertFalse(returnLayoutOp.isPresent());
}
@Test
public void testEquals() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT, C_INT, C_INT);
assertEquals(fd, fd);
FunctionDescriptor fdReturnSomethingElse = FunctionDescriptor.of(C_LONG_LONG, C_INT, C_INT);
FunctionDescriptor fdOtherArguments = FunctionDescriptor.of(C_INT, C_INT);
assertFalse(fd.equals(fdReturnSomethingElse));
assertFalse(fd.equals(fdOtherArguments));
assertFalse(fd.equals(null));
assertFalse(fd.equals("A"));
}
@Test
public void testCarrierMethodType() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT,
C_INT,
MemoryLayout.structLayout(C_INT, C_INT),
MemoryLayout.sequenceLayout(3, C_INT));
MethodType cmt = fd.toMethodType();
assertEquals(cmt, MethodType.methodType(int.class, int.class, MemorySegment.class, MemorySegment.class));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadCarrierMethodType() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT,
C_INT,
MemoryLayout.structLayout(C_INT, C_INT),
MemoryLayout.sequenceLayout(3, C_INT),
MemoryLayout.paddingLayout(4));
fd.toMethodType(); // should throw
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testIllegalInsertArgNegIndex() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT);
fd.insertArgumentLayouts(-1, C_INT);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testIllegalInsertArgOutOfBounds() {
FunctionDescriptor fd = FunctionDescriptor.of(C_INT);
fd.insertArgumentLayouts(2, C_INT);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadPaddingInVoidFunction() {
FunctionDescriptor.ofVoid(MemoryLayout.paddingLayout(1));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadPaddingInNonVoidFunction() {
FunctionDescriptor.of(MemoryLayout.paddingLayout(1));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadPaddingInAppendArgLayouts() {
FunctionDescriptor.ofVoid().appendArgumentLayouts(MemoryLayout.paddingLayout(1));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadPaddingInInsertArgLayouts() {
FunctionDescriptor.ofVoid().insertArgumentLayouts(0, MemoryLayout.paddingLayout(1));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadPaddingInChangeRetLayout() {
FunctionDescriptor.ofVoid().changeReturnLayout(MemoryLayout.paddingLayout(1));
}
}
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