Added test cases to test and assert the correct behavior of the StringBasedGemfireRepositoryQuery.toCollection(..) method for handling various GemFire Select Query result types.

src/test/java/org/springframework/data/gemfire/repository/query/StringBasedGemfireRepositoryQueryTest.java

@@ -0,0 +1,113 @@
+/*
+ * 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.repository.query;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNotSame;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+
+import org.junit.Test;
+
+import com.gemstone.gemfire.cache.query.SelectResults;
+import com.gemstone.gemfire.cache.query.internal.ResultsBag;
+
+/**
+ * The SpringBasedGemfireRepositoryQueryTest class is a test suite of test cases testing the contract and functionality
+ * of the StringBasedGemfireRepositoryQuery class.
+ * <p/>
+ * @author John Blum
+ * @see org.mockito.Mockito
+ * @see org.junit.Test
+ * @see org.springframework.data.gemfire.repository.query.StringBasedGemfireRepositoryQuery
+ * @since 1.4.0
+ */
+public class StringBasedGemfireRepositoryQueryTest {
+
+	private final StringBasedGemfireRepositoryQuery repositoryQuery = new StringBasedGemfireRepositoryQuery();
+
+	@Test
+	public void testToCollectionWithSelectResults() {
+		SelectResults mockSelectResults = mock(SelectResults.class, "testToCollectionWithSelectResults.SelectResults");
+		List<String> expectedList = Arrays.asList("one", "two", "three");
+
+		when(mockSelectResults.asList()).thenReturn(expectedList);
+
+		Collection<?> actualList = repositoryQuery.toCollection(mockSelectResults);
+
+		assertSame(expectedList, actualList);
+	}
+
+	@Test
+	public void testToCollectionWithResultsBag() {
+		ResultsBag mockResultsBag = mock(ResultsBag.class, "testToCollectionWithResultsBag.ResultsBag");
+		List<String> expectedList = Arrays.asList("a", "b", "c");
+
+		when(mockResultsBag.asList()).thenReturn(expectedList);
+
+		Collection<?> actualList = repositoryQuery.toCollection(mockResultsBag);
+
+		assertSame(expectedList, actualList);
+	}
+
+	@Test
+	public void testToCollectionWithCollection() {
+		List<String> expectedList = Arrays.asList("x", "y", "z");
+		Collection<?> actualList = repositoryQuery.toCollection(expectedList);
+
+		assertSame(expectedList, actualList);
+	}
+
+	@Test
+	public void testToCollectionWithArray() {
+		Object[] array = { 1, 2, 3 };
+		Collection<?> list = repositoryQuery.toCollection(array);
+
+		assertNotNull(list);
+		assertNotSame(array, list);
+		assertTrue(list instanceof List);
+		assertEquals(array.length, list.size());
+		assertTrue(list.containsAll(Arrays.asList(array)));
+	}
+
+	@Test
+	public void testToCollectionWithSingleObject() {
+		Collection<?> list = repositoryQuery.toCollection("test");
+
+		assertTrue(list instanceof List);
+		assertFalse(list.isEmpty());
+		assertEquals(1, list.size());
+		assertEquals("test", ((List) list).get(0));
+	}
+
+	@Test
+	public void testToCollectionWithNull() {
+		Collection<?> list = repositoryQuery.toCollection(null);
+
+		assertNotNull(list);
+		assertTrue(list.isEmpty());
+	}
+
+}