tests/src/cgeo/geocaching/utils/LazyInitializedListTest.java


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package cgeo.geocaching.utils;

import static org.assertj.core.api.Assertions.assertThat;

import java.util.ArrayList;
import java.util.List;

import junit.framework.TestCase;

public class LazyInitializedListTest extends TestCase {

    private static final class MockedLazyInitializedList extends LazyInitializedList<String> {
        @Override
        public List<String> call() {
            return new ArrayList<String>();
        }
    }

    public static void testAccess() {
        final LazyInitializedList<String> list = new MockedLazyInitializedList();
        assertThat(list.isEmpty()).isTrue();
        list.add("Test");
        assertThat(list.isEmpty()).isFalse();
        assertThat(list).hasSize(1);
        int iterations = 0;
        for (String element : list) {
            assertThat(element).isEqualTo("Test");
            iterations++;
        }
        assertThat(iterations).isEqualTo(1);
    }

}