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UnsafeAllocatorInstantiationTest.java
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UnsafeAllocatorInstantiationTest.java
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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 junit.framework.TestCase;
/**
* Test unsafe allocator instantiation
* @author Ugljesa Jovanovic
*/
public final class UnsafeAllocatorInstantiationTest extends TestCase {
public interface Interface {
}
public static abstract class AbstractClass {
}
public static class ConcreteClass {
}
/**
* Ensure that the {@link java.lang.UnsupportedOperationException} is thrown when trying
* to instantiate an interface
*/
public void testInterfaceInstantiation() {
UnsafeAllocator unsafeAllocator = UnsafeAllocator.create();
try {
unsafeAllocator.newInstance(Interface.class);
fail();
} catch (Exception e) {
assertEquals(e.getClass(), UnsupportedOperationException.class);
}
}
/**
* Ensure that the {@link java.lang.UnsupportedOperationException} is thrown when trying
* to instantiate an abstract class
*/
public void testAbstractClassInstantiation() {
UnsafeAllocator unsafeAllocator = UnsafeAllocator.create();
try {
unsafeAllocator.newInstance(AbstractClass.class);
fail();
} catch (Exception e) {
assertEquals(e.getClass(), UnsupportedOperationException.class);
}
}
/**
* Ensure that no exception is thrown when trying to instantiate a concrete class
*/
public void testConcreteClassInstantiation() {
UnsafeAllocator unsafeAllocator = UnsafeAllocator.create();
try {
unsafeAllocator.newInstance(ConcreteClass.class);
} catch (Exception e) {
fail();
}
}
}