/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jctools.channels.mapping;
import org.jctools.util.UnsafeAccess;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
public class MapperTest {
private static final int EXAMPLE_SIZE_IN_BYTES = 16;
private long startAddress;
private Mapper<Example> mapper;
@Before
public void malloc() {
startAddress = UnsafeAccess.UNSAFE.allocateMemory(EXAMPLE_SIZE_IN_BYTES * 2);
mapper = new Mapper<Example>(Example.class, false);
}
@After
public void free() {
UnsafeAccess.UNSAFE.freeMemory(startAddress);
}
@Test
public void shouldUnderstandInterfaceFields() {
assertEquals(EXAMPLE_SIZE_IN_BYTES, mapper.getSizeInBytes());
StubFlyweight example = newFlyweight();
assertNotNull(example);
assertTrue(example instanceof Example);
}
@Test
public void shouldBeAbleToReadAndWriteData() {
Example writer = (Example) newFlyweight();
Example reader = (Example) newFlyweight();
writer.setFoo(5);
assertEquals(5, reader.getFoo());
writer.setBar(6L);
assertEquals(6L, reader.getBar());
}
@Test
public void shouldBeAbleToMoveFlyweights() {
Example writer = (Example) newFlyweight();
Example reader = (Example) newFlyweight();
StubFlyweight writeCursor = (StubFlyweight) writer;
StubFlyweight readCursor = (StubFlyweight) reader;
writeCursor.moveTo(startAddress + EXAMPLE_SIZE_IN_BYTES);
readCursor.moveTo(startAddress + EXAMPLE_SIZE_IN_BYTES);
writer.setFoo(5);
assertEquals(5, reader.getFoo());
writer.setBar(6L);
assertEquals(6L, reader.getBar());
}
private StubFlyweight newFlyweight() {
return mapper.newFlyweight(StubFlyweight.class, "StubTemplate.java", startAddress);
}
// ---------------------------------------------------
public interface Example {
int getFoo();
void setFoo(int value);
long getBar();
void setBar(long value);
}
}