androidx/collection/ArraySetCompatTest.java

/*
 * Copyright 2018 The Android Open Source Project
 *
 * 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 androidx.collection;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import org.junit.Test;

import java.util.Iterator;
import java.util.NoSuchElementException;

public class ArraySetCompatTest {
    @Test
    public void testCanNotIteratePastEnd() {
        ArraySet<String> set = new ArraySet<>();
        set.add("value");
        Iterator<String> iterator = set.iterator();

        assertTrue(iterator.hasNext());
        assertEquals("value", iterator.next());
        assertFalse(iterator.hasNext());

        try {
            iterator.next();
            fail();
        } catch (NoSuchElementException expected) {
        }
    }
}