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/*
* Copyright (C) 2011 The Guava Authors
*
* 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.common.reflect;
import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;
import java.lang.reflect.Method;
import java.lang.reflect.TypeVariable;
import junit.framework.TestCase;
/**
* Unit test for {@link TypeParameter}.
*
* @author Ben Yu
*/
public class TypeParameterTest extends TestCase {
public <T> void testCaptureTypeParameter() throws Exception {
TypeVariable<?> variable = new TypeParameter<T>() {}.typeVariable;
TypeVariable<?> expected =
TypeParameterTest.class.getDeclaredMethod("testCaptureTypeParameter")
.getTypeParameters()[0];
assertEquals(expected, variable);
}
public void testConcreteTypeRejected() {
try {
new TypeParameter<String>() {};
fail();
} catch (IllegalArgumentException expected) {
}
}
public <A, B> void testEquals() throws Exception {
Method method = TypeParameterTest.class.getDeclaredMethod("testEquals");
new EqualsTester()
.addEqualityGroup(new TypeParameter<A>() {}, new TypeParameter<A>() {})
.addEqualityGroup(new TypeParameter<B>() {})
.testEquals();
}
public void testNullPointers() {
new NullPointerTester().testAllPublicStaticMethods(TypeParameter.class);
}
}
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