/*
* Copyright (C) 2007 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.primitives;
import com.google.common.collect.ImmutableSet;
import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;
import java.util.Set;
/**
* Unit test for {@link Primitives}.
*
* @author Kevin Bourrillion
*/
public class PrimitivesTest extends TestCase {
public void testIsWrapperType() {
assertTrue(Primitives.isWrapperType(Void.class));
assertFalse(Primitives.isWrapperType(void.class));
}
public void testWrap() {
assertSame(Integer.class, Primitives.wrap(int.class));
assertSame(Integer.class, Primitives.wrap(Integer.class));
assertSame(String.class, Primitives.wrap(String.class));
}
public void testUnwrap() {
assertSame(int.class, Primitives.unwrap(Integer.class));
assertSame(int.class, Primitives.unwrap(int.class));
assertSame(String.class, Primitives.unwrap(String.class));
}
public void testAllPrimitiveTypes() {
Set<Class<?>> primitives = Primitives.allPrimitiveTypes();
assertEquals(
ImmutableSet.<Object>of(
boolean.class, byte.class, char.class, double.class,
float.class, int.class, long.class, short.class, void.class),
primitives);
try {
primitives.remove(boolean.class);
fail();
} catch (UnsupportedOperationException expected) {
}
}
public void testAllWrapperTypes() {
Set<Class<?>> wrappers = Primitives.allWrapperTypes();
assertEquals(
ImmutableSet.<Object>of(
Boolean.class, Byte.class, Character.class, Double.class,
Float.class, Integer.class, Long.class, Short.class, Void.class),
wrappers);
try {
wrappers.remove(Boolean.class);
fail();
} catch (UnsupportedOperationException expected) {
}
}
public void testNullPointerExceptions() throws Exception {
NullPointerTester tester = new NullPointerTester();
tester.testAllPublicStaticMethods(Primitives.class);
}
}