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/*
* Copyright (C) 2016 Google Inc.
*
* 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 com.google.gson.internal;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import org.junit.Test;
/**
* Test unsafe allocator instantiation
* @author Ugljesa Jovanovic
*/
public final class UnsafeAllocatorInstantiationTest {
public interface Interface {
}
public static abstract class AbstractClass {
}
public static class ConcreteClass {
}
/**
* Ensure that an {@link AssertionError} is thrown when trying
* to instantiate an interface
*/
@Test
public void testInterfaceInstantiation() throws Exception {
try {
UnsafeAllocator.INSTANCE.newInstance(Interface.class);
fail();
} catch (AssertionError e) {
assertTrue(e.getMessage().startsWith("UnsafeAllocator is used for non-instantiable type"));
}
}
/**
* Ensure that an {@link AssertionError} is thrown when trying
* to instantiate an abstract class
*/
@Test
public void testAbstractClassInstantiation() throws Exception {
try {
UnsafeAllocator.INSTANCE.newInstance(AbstractClass.class);
fail();
} catch (AssertionError e) {
assertTrue(e.getMessage().startsWith("UnsafeAllocator is used for non-instantiable type"));
}
}
/**
* Ensure that no exception is thrown when trying to instantiate a concrete class
*/
@Test
public void testConcreteClassInstantiation() throws Exception {
ConcreteClass instance = UnsafeAllocator.INSTANCE.newInstance(ConcreteClass.class);
assertNotNull(instance);
}
}
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