/*
* Copyright 2015 McDowell
*
* 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 uk.kludje.testcontract.util.collection;
import uk.kludje.testcontract.ContractViolationException;
import java.util.Collection;
import java.util.Iterator;
public class CollectionSizeContract {
public static <E> void assertIterator(Collection<E> coll) {
Iterator<E> it = coll.iterator();
int size = 0;
while (it.hasNext()) {
it.next();
size++;
}
ContractViolationException.assertThat(size == coll.size(), "assertIteratorSize: " + coll.getClass());
}
public static <E> void assertStreamSize(Collection<E> coll) {
ContractViolationException.assertThat(coll.stream().count() == coll.size(), "assertStreamSize: " + coll.getClass());
}
public static <E> void assertToArraySize(Collection<E> coll) {
ContractViolationException.assertThat(coll.toArray().length == coll.size(), "assertToArraySize: " + coll.getClass());
}
}