// =================================================================================================
// Copyright 2011 Twitter, Inc.
// -------------------------------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this work except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file, or 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.twitter.common.base;
import org.junit.Test;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
/**
* @author John Sirois
*/
public class MoreSuppliersTest {
private static final class PrivateClassPublicConstructor {
public PrivateClassPublicConstructor() { }
}
private static final class PrivateClassPrivateConstructor {
private PrivateClassPrivateConstructor() { }
}
public static final class PublicClassPublicConstructor {
public PublicClassPublicConstructor() { }
}
public static final class PublicClassPrivateConstructor {
private PublicClassPrivateConstructor() { }
}
@Test
public void testOfVisibilitiesHandled() throws Exception {
testOfForType(PrivateClassPublicConstructor.class);
testOfForType(PrivateClassPrivateConstructor.class);
testOfForType(PublicClassPublicConstructor.class);
testOfForType(PublicClassPrivateConstructor.class);
}
private void testOfForType(Class<?> type) {
Supplier<Object> supplier = MoreSuppliers.of(type);
Object object = supplier.get();
assertNotNull(object);
assertNotSame(object, supplier.get());
}
static class NoNoArgConstructor {
NoNoArgConstructor(String unused) { }
}
@Test(expected = NullPointerException.class)
public void testNullArgumentRejected() {
MoreSuppliers.of(null);
}
@Test(expected = IllegalArgumentException.class)
public void testNoNoArgFailsFast() {
MoreSuppliers.of(NoNoArgConstructor.class);
}
}