/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds licenses this file
* to you 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 current 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 org.jclouds.collect;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import org.easymock.EasyMock;
import org.testng.Assert;
import org.testng.annotations.Test;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
/**
* Tests behavior of {@code IterableWithMarkers}.
*
* @author Adrian Cole
*/
@Test(testName = "PagedIterablesTest")
public class PagedIterablesTest {
@SuppressWarnings("unchecked")
@Test
public void testSinglePageResultReturnsSame() {
IterableWithMarker<String> initial = IterableWithMarkers.from(ImmutableSet.of("foo", "bar"));
Function<Object, IterableWithMarker<String>> markerToNext = createMock(Function.class);
EasyMock.replay(markerToNext);
PagedIterable<String> iterable = PagedIterables.advance(initial, markerToNext);
Assert.assertSame(iterable.get(0), initial);
EasyMock.verify(markerToNext);
}
@SuppressWarnings("unchecked")
@Test
public void testConcatPage3Pages() {
IterableWithMarker<String> initial = IterableWithMarkers.from(ImmutableSet.of("foo", "bar"), "MARKER1");
Function<Object, IterableWithMarker<String>> markerToNext = createMock(Function.class);
expect(markerToNext.apply("MARKER1")).andReturn(
IterableWithMarkers.from(ImmutableSet.of("boo", "baz"), "MARKER2"));
expect(markerToNext.apply("MARKER2")).andReturn(IterableWithMarkers.from(ImmutableSet.of("ham", "cheeze"), null));
EasyMock.replay(markerToNext);
PagedIterable<String> iterable = PagedIterables.advance(initial, markerToNext);
Assert.assertEquals(iterable.concat().toSet(),
ImmutableSet.of("foo", "bar", "boo", "baz", "ham", "cheeze"));
EasyMock.verify(markerToNext);
}
}