/*
* Copyright 2010-2013 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.function.execution;
import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.isA;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertThat;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
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.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.apache.geode.cache.execute.Execution;
import org.apache.geode.cache.execute.Function;
import org.apache.geode.cache.execute.FunctionException;
import org.apache.geode.cache.execute.ResultCollector;
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.junit.MockitoJUnitRunner;
/**
* The AbstractFunctionExecutionTest class is a test suite of test cases testing the contract and functionality
* of the AbstractFunctionExecution class.
*
* @author John Blum
* @see org.junit.Test
* @see org.junit.runner.RunWith
* @see org.mockito.Mockito
* @see org.mockito.runners.MockitoJUnitRunner
* @see org.springframework.data.gemfire.function.execution.AbstractFunctionExecution
* @see org.apache.geode.cache.execute.Execution
* @since 1.7.0
*/
@RunWith(MockitoJUnitRunner.class)
public class AbstractFunctionExecutionTest {
@Rule
public ExpectedException expectedException = ExpectedException.none();
@Mock
private Execution mockExecution;
// TODO add more tests!!!
@Test
@SuppressWarnings("unchecked")
public void executeWithResults() throws Exception {
Object[] args = { "one", "two", "three" };
List<Object> results = Arrays.asList(args);
Function mockFunction = mock(Function.class, "MockFunction");
ResultCollector mockResultCollector = mock(ResultCollector.class, "MockResultCollector");
when(mockExecution.withArgs(eq(args))).thenReturn(mockExecution);
when(mockExecution.execute(eq(mockFunction))).thenReturn(mockResultCollector);
when(mockFunction.hasResult()).thenReturn(true);
when(mockResultCollector.getResult(500, TimeUnit.MILLISECONDS)).thenReturn(results);
AbstractFunctionExecution functionExecution = new AbstractFunctionExecution() {
@Override protected Execution getExecution() {
return mockExecution;
}
};
Iterable<Object> actualResults = functionExecution.setFunction(mockFunction)
.setArgs(args).setTimeout(500).execute();
assertThat(actualResults, is(notNullValue()));
assertThat(actualResults, is(equalTo((Iterable<Object>) results)));
verify(mockExecution, times(1)).withArgs(eq(args));
verify(mockExecution, never()).withCollector(any(ResultCollector.class));
verify(mockExecution, never()).withFilter(any(Set.class));
verify(mockExecution, times(1)).execute(eq(mockFunction));
verify(mockExecution, never()).execute(any(String.class));
verify(mockResultCollector, times(1)).getResult(500, TimeUnit.MILLISECONDS);
verify(mockResultCollector, never()).getResult();
}
@Test
public void executeAndExtractWithSingleResult() {
final List<String> results = Collections.singletonList("test");
AbstractFunctionExecution functionExecution = new AbstractFunctionExecution() {
@Override protected Execution getExecution() {
return mockExecution;
}
@SuppressWarnings("unchecked")
@Override <T> Iterable<T> execute() {
return (Iterable<T>) results;
}
};
assertThat(functionExecution.executeAndExtract(), is(equalTo("test")));
}
@Test
public void executeAndExtractWithMultipleResults() {
final List<String> results = Arrays.asList("one", "two", "three");
AbstractFunctionExecution functionExecution = new AbstractFunctionExecution() {
@Override protected Execution getExecution() {
return mockExecution;
}
@SuppressWarnings("unchecked")
@Override <T> Iterable<T> execute() {
return (Iterable<T>) results;
}
};
assertThat(functionExecution.executeAndExtract(), is(equalTo("one")));
}
@Test
public void executeAndExtractWithNullResults() {
AbstractFunctionExecution functionExecution = new AbstractFunctionExecution() {
@Override protected Execution getExecution() {
return mockExecution;
}
@SuppressWarnings("unchecked")
@Override <T> Iterable<T> execute() {
return null;
}
};
assertThat(functionExecution.executeAndExtract(), is(nullValue()));
}
@Test
public void executeAndExtractWithNoResults() {
AbstractFunctionExecution functionExecution = new AbstractFunctionExecution() {
@Override protected Execution getExecution() {
return mockExecution;
}
@SuppressWarnings("unchecked")
@Override <T> Iterable<T> execute() {
return Collections.emptyList();
}
};
assertThat(functionExecution.executeAndExtract(), is(nullValue()));
}
@Test
public void executeAndExtractWithThrowsException() {
AbstractFunctionExecution functionExecution = new AbstractFunctionExecution() {
@Override protected Execution getExecution() {
return mockExecution;
}
@SuppressWarnings("unchecked")
@Override <T> Iterable<T> execute() {
return Collections.singletonList((T) new IllegalArgumentException("test"));
}
};
expectedException.expect(FunctionException.class);
expectedException.expectCause(isA(IllegalArgumentException.class));
expectedException.expectMessage(containsString("Execution of Function with ID 'TestFunction' failed"));
functionExecution.setFunctionId("TestFunction").executeAndExtract();
}
}