/*
 * 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.j2objc;

import com.google.j2objc.annotations.LoopTranslation;
import java.util.Iterator;
import junit.framework.TestCase;

/**
 * Additional tests for java.lang.String support.
 *
 * @author Keith Stanger
 */
public class IterableTest extends TestCase {

  private static class NullIteratorIterable implements Iterable<String> {

    @Override
    public Iterator<String> iterator() {
      return null;
    }
  }

  public void testNullIterableWithEnhancedForLoop() {
    Iterable<String> iterable = new NullIteratorIterable();
    try {
      for (@LoopTranslation(LoopTranslation.LoopStyle.JAVA_ITERATOR) String s : iterable) {
      }
      fail("Expected NullPointerException");
    } catch (NullPointerException e) {
      // expected
    }
    try {
      for (@LoopTranslation(LoopTranslation.LoopStyle.FAST_ENUMERATION) String s : iterable) {
      }
      fail("Expected NullPointerException");
    } catch (NullPointerException e) {
      // expected
    }
  }
}
