/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.isis.core.commons.encoding;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import org.jmock.Mockery;
import org.jmock.integration.junit4.JUnit4Mockery;
import org.junit.Before;
import org.junit.Test;
import org.apache.isis.core.commons.authentication.AuthenticationSession;
public abstract class EncodabilityContractTest {
protected final Mockery context = new JUnit4Mockery();
protected AuthenticationSession mockAuthSession;
protected Encodable encodable;
public EncodabilityContractTest() {
super();
}
@Before
public void setUp() throws Exception {
encodable = createEncodable();
mockAuthSession = context.mock(AuthenticationSession.class);
}
/**
* Hook for subclasses to provide object to be tested.
*/
protected abstract Encodable createEncodable();
@Test
public void shouldImplementEncodeable() throws Exception {
assertThat(encodable, is(instanceOf(Encodable.class)));
}
@Test
public void shouldHaveOneArgConstructorThatAcceptsInput() {
final Object o = encodable;
try {
o.getClass().getConstructor(DataInputExtended.class);
} catch (final Exception e) {
fail("could not locate 1-arg constructor accepting a DataInputExtended instance");
}
}
@Test
public void shouldRoundTrip() throws IOException {
final PipedInputStream pipedInputStream = new PipedInputStream();
final PipedOutputStream pipedOutputStream = new PipedOutputStream(pipedInputStream);
final DataOutputStreamExtended outputImpl = new DataOutputStreamExtended(pipedOutputStream);
final DataInputStreamExtended inputImpl = new DataInputStreamExtended(pipedInputStream);
outputImpl.writeEncodable(encodable);
final Object decodedEncodable = inputImpl.readEncodable(Object.class);
assertRoundtripped(decodedEncodable, encodable);
}
protected abstract void assertRoundtripped(Object decodedEncodable, Object originalEncodable);
}