/*
* 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.cache;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import static org.mockito.ArgumentMatchers.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.isA;
import static org.mockito.Mockito.*;
import org.apache.geode.cache.CacheLoader;
import org.apache.geode.cache.LoaderHelper;
import org.apache.geode.cache.Region;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.junit.MockitoJUnitRunner;
import org.mockito.stubbing.Answer;
/**
* Unit tests to test the adaption of the {@link java.util.concurrent.Callable}
* into GemFire's {@link org.apache.geode.cache.CacheLoader} interface.
*
* @author John Blum
* @see org.junit.Rule
* @see org.junit.Test
* @see org.junit.rules.ExpectedException
* @see org.junit.runner.RunWith
* @see org.mockito.Mock
* @see org.mockito.Mockito
* @see org.mockito.runners.MockitoJUnitRunner
* @see java.util.concurrent.Callable
* @see org.apache.geode.cache.CacheLoader
* @see org.apache.geode.cache.LoaderHelper
* @see org.apache.geode.cache.Region
* @since 1.9.0
*/
@RunWith(MockitoJUnitRunner.class)
public class CallableCacheLoaderAdapterTest {
@Mock
private CacheLoader<String, Object> mockCacheLoader;
@Rule
public ExpectedException exception = ExpectedException.none();
@Mock
private LoaderHelper<String, Object> mockLoaderHelper;
@Mock
private Region<String, Object> mockRegion;
@Test
public void constructCallableCacheLoaderAdapterWithArgumentKeyAndRegion() {
CallableCacheLoaderAdapter<String, Object> instance =
new CallableCacheLoaderAdapter<>(mockCacheLoader, "key", mockRegion, "test");
assertThat(instance, is(notNullValue()));
assertThat(instance.getCacheLoader(), is(sameInstance(mockCacheLoader)));
assertThat(instance.getKey(), is(equalTo("key")));
assertThat(instance.getRegion(), is(sameInstance(mockRegion)));
assertThat(String.valueOf(instance.getArgument()), is(equalTo("test")));
}
@Test
public void constructCallableCacheLoaderAdapterWithKeyRegionAndNoArgument() {
CallableCacheLoaderAdapter<String, Object> instance =
new CallableCacheLoaderAdapter<>(mockCacheLoader, "key", mockRegion);
assertThat(instance, is(notNullValue()));
assertThat(instance.getCacheLoader(), is(sameInstance(mockCacheLoader)));
assertThat(instance.getKey(), is(equalTo("key")));
assertThat(instance.getRegion(), is(sameInstance(mockRegion)));
assertThat(instance.getArgument(), is(nullValue()));
}
@Test
public void constructCallableCacheLoaderAdapterWithNoArgumentKeyOrRegion() {
CallableCacheLoaderAdapter<String, Object> instance =
new CallableCacheLoaderAdapter<>(mockCacheLoader);
assertThat(instance, is(notNullValue()));
assertThat(instance.getCacheLoader(), is(sameInstance(mockCacheLoader)));
assertThat(instance.getKey(), is(nullValue()));
assertThat(instance.getRegion(), is(nullValue()));
assertThat(instance.getArgument(), is(nullValue()));
}
@Test
public void constructCallableCacheLoaderAdapterWithNullCacheLoader() {
exception.expect(IllegalArgumentException.class);
exception.expectCause(is(nullValue(Throwable.class)));
exception.expectMessage("CacheLoader must not be null");
new CallableCacheLoaderAdapter<>(null);
}
@Test
@SuppressWarnings("unchecked")
public void callDelegatesToLoad() throws Exception {
CallableCacheLoaderAdapter<String, Object> instance =
new CallableCacheLoaderAdapter<>(mockCacheLoader, "key", mockRegion, "test");
when(mockCacheLoader.load(any(LoaderHelper.class))).thenAnswer(new Answer<String>() {
public String answer(final InvocationOnMock invocation) throws Throwable {
LoaderHelper<String, Object> loaderHelper = invocation.getArgument(0);
assertThat(loaderHelper, is(notNullValue()));
assertThat(loaderHelper.getArgument(), is(equalTo("test")));
assertThat(loaderHelper.getKey(), is(equalTo("key")));
assertThat(loaderHelper.getRegion(), is(sameInstance(mockRegion)));
return "mockValue";
}
});
assertThat(instance.call(), is(equalTo("mockValue")));
verify(mockCacheLoader, times(1)).load(isA(LoaderHelper.class));
}
@Test
public void callThrowsIllegalStateExceptionForNullKey() throws Exception {
CallableCacheLoaderAdapter<String, Object> instance =
new CallableCacheLoaderAdapter<>(mockCacheLoader, null, mockRegion);
assertThat(instance.getKey(), is(nullValue()));
assertThat(instance.getRegion(), is(sameInstance(mockRegion)));
exception.expect(IllegalStateException.class);
exception.expectCause(is(nullValue(Throwable.class)));
exception.expectMessage("The key for which the value is loaded for cannot be null");
instance.call();
}
@Test
public void callThrowsIllegalStateExceptionForNullRegion() throws Exception {
CallableCacheLoaderAdapter<String, Object> instance =
new CallableCacheLoaderAdapter<>(mockCacheLoader, "key", null);
assertThat(instance.getKey(), is(equalTo("key")));
assertThat(instance.getRegion(), is(nullValue()));
exception.expect(IllegalStateException.class);
exception.expectCause(is(nullValue(Throwable.class)));
exception.expectMessage("The Region to load cannot be null");
instance.call();
}
@Test
public void closeDelegatesToCacheLoaderClose() {
new CallableCacheLoaderAdapter<>(mockCacheLoader).close();
verify(mockCacheLoader, times(1)).close();
}
@Test
public void loadDelegatesToCacheLoaderLoad() {
CallableCacheLoaderAdapter<String, Object> instance = new CallableCacheLoaderAdapter<>(mockCacheLoader);
when(mockCacheLoader.load(eq(mockLoaderHelper))).thenReturn("test");
assertThat(instance.load(mockLoaderHelper), is(equalTo("test")));
verify(mockCacheLoader, times(1)).load(eq(mockLoaderHelper));
}
}