/*
* Copyright 2016 the original author or authors.
*
* 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 org.springframework.data.gemfire.domain.support;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Spy;
import org.mockito.junit.MockitoJUnitRunner;
import org.springframework.data.domain.Pageable;
/**
* Unit tests for {@link AbstractSliceSupport}.
*
* @author John Blum
* @see org.junit.Test
* @see org.junit.runner.RunWith
* @see org.mockito.Mock
* @see org.mockito.Mockito
* @see org.mockito.junit.MockitoJUnitRunner
* @see org.springframework.data.gemfire.domain.support.AbstractSliceSupport
* @since 1.0.0
*/
@RunWith(MockitoJUnitRunner.class)
public class AbstractSliceSupportTests {
@Spy
private AbstractSliceSupport mockSlice;
@Test
public void hasContentIsTrue() {
doReturn(1).when(mockSlice).getNumberOfElements();
assertThat(mockSlice.hasContent()).isTrue();
verify(mockSlice, times(1)).getNumberOfElements();
}
@Test
public void hasContentIsFalse() {
doReturn(0).when(mockSlice).getNumberOfElements();
assertThat(mockSlice.hasContent()).isFalse();
verify(mockSlice, times(1)).getNumberOfElements();
}
@Test
public void isFirstReturnsTrueWhenHasPreviousIsFalse() {
doReturn(false).when(mockSlice).hasPrevious();
assertThat(mockSlice.isFirst()).isTrue();
verify(mockSlice, times(1)).hasPrevious();
}
@Test
public void isFirstReturnsFalseWhenHasPreviousIsTrue() {
doReturn(true).when(mockSlice).hasPrevious();
assertThat(mockSlice.isFirst()).isFalse();
verify(mockSlice, times(1)).hasPrevious();
}
@Test
public void isLastReturnsTrueWhenHasNextIsFalse() {
doReturn(false).when(mockSlice).hasNext();
assertThat(mockSlice.isLast()).isTrue();
verify(mockSlice, times(1)).hasNext();
}
@Test
public void isLastReturnFalseWhenHasNextIsTrue() {
doReturn(true).when(mockSlice).hasNext();
assertThat(mockSlice.isLast()).isFalse();
verify(mockSlice, times(1)).hasNext();
}
@Test
public void getNumberReturnsOne() {
doReturn(null).when(mockSlice).previousPageable();
assertThat(mockSlice.getNumber()).isEqualTo(1);
verify(mockSlice, times(1)).previousPageable();
}
@Test
public void getNumberReturnsTwo() {
Pageable mockPageable = mock(Pageable.class);
when(mockPageable.previousOrFirst()).thenReturn(mockPageable);
doReturn(mockPageable).when(mockSlice).previousPageable();
assertThat(mockSlice.getNumber()).isEqualTo(2);
verify(mockSlice, times(1)).previousPageable();
verify(mockPageable, times(1)).previousOrFirst();
}
@Test
public void getNumberReturnsThree() {
Pageable mockPageableOne = mock(Pageable.class, "Page One");
Pageable mockPageableTwo = mock(Pageable.class, "Page Two");
when(mockPageableOne.previousOrFirst()).thenReturn(mockPageableOne);
when(mockPageableTwo.previousOrFirst()).thenReturn(mockPageableOne);
doReturn(mockPageableTwo).when(mockSlice).previousPageable();
assertThat(mockSlice.getNumber()).isEqualTo(3);
verify(mockSlice, times(1)).previousPageable();
verify(mockPageableOne, times(1)).previousOrFirst();
verify(mockPageableTwo, times(1)).previousOrFirst();
}
@Test
public void getNumberOfElementsReturnsTwenty() {
List<?> mockContent = mock(List.class);
when(mockContent.size()).thenReturn(20);
doReturn(mockContent).when(mockSlice).getContent();
assertThat(mockSlice.getNumberOfElements()).isEqualTo(20);
verify(mockSlice, times(1)).getContent();
verify(mockContent, times(1)).size();
}
@Test
public void getSizeCallsGetNumberOfElements() {
doReturn(18).when(mockSlice).getNumberOfElements();
assertThat(mockSlice.getSize()).isEqualTo(18);
verify(mockSlice, times(1)).getNumberOfElements();
}
@Test
@SuppressWarnings("unchecked")
public void iteratorWithContent() {
doReturn(Arrays.asList(1, 2, 3)).when(mockSlice).getContent();
assertThat(mockSlice.iterator()).contains(1, 2, 3);
verify(mockSlice, times(1)).getContent();
}
}