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/*
* Copyright 2014 Open Networking Laboratory
*
* 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.onlab.junit;
import org.junit.Test;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.is;
import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
/**
* Set of unit tests to check the implementation of the immutable class
* checker.
*/
public class ImmutableClassCheckerTest {
/**
* Test class for non final class check.
*/
// CHECKSTYLE IGNORE FinalClass FOR NEXT 1 LINES
static class NonFinal {
private NonFinal() { }
}
/**
* Check that a non final class correctly produces an error.
* @throws Exception if any of the reflection lookups fail.
*/
@Test
public void testNonFinalClass() throws Exception {
boolean gotException = false;
try {
assertThatClassIsImmutable(NonFinal.class);
} catch (AssertionError assertion) {
assertThat(assertion.getMessage(),
containsString("is not final"));
gotException = true;
}
assertThat(gotException, is(true));
}
/**
* Test class for non private member class check.
*/
static final class FinalProtectedMember {
protected final int x = 0;
}
/**
* Check that a final class with a non-private member is properly detected.
*
* @throws Exception if any of the reflection lookups fail.
*/
@Test
public void testFinalProtectedMember() throws Exception {
boolean gotException = false;
try {
assertThatClassIsImmutable(FinalProtectedMember.class);
} catch (AssertionError assertion) {
assertThat(assertion.getMessage(),
containsString("a field named 'x' that is not private"));
gotException = true;
}
assertThat(gotException, is(true));
}
/**
* Test class for non private member class check.
*/
static final class NotFinalPrivateMember {
private int x = 0;
}
/**
* Check that a final class with a non-final private
* member is properly detected.
*
* @throws Exception if any of the reflection lookups fail.
*/
@Test
public void testNotFinalPrivateMember() throws Exception {
boolean gotException = false;
try {
assertThatClassIsImmutable(NotFinalPrivateMember.class);
} catch (AssertionError assertion) {
assertThat(assertion.getMessage(),
containsString("a field named 'x' that is not final"));
gotException = true;
}
assertThat(gotException, is(true));
}
/**
* Test class for non private member class check.
*/
static final class ClassWithSetter {
private final int x = 0;
public void setX(int newX) {
}
}
/**
* Check that a final class with a final private
* member that is modifyable by a setter is properly detected.
*
* @throws Exception if any of the reflection lookups fail.
*/
@Test
public void testClassWithSetter() throws Exception {
boolean gotException = false;
try {
assertThatClassIsImmutable(ClassWithSetter.class);
} catch (AssertionError assertion) {
assertThat(assertion.getMessage(),
containsString("a class with a setter named 'setX'"));
gotException = true;
}
assertThat(gotException, is(true));
}
}
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