Add Unit Tests for GemFireGarbageCollectorConfiguration.

Resolves gh-21.

spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/integration/annotation/GemFireGarbageCollectorConfigurationUnitTests.java

@@ -0,0 +1,124 @@
+/*
+ *  Copyright 2019 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
+ *
+ *       https://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.tests.integration.annotation;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import java.util.Map;
+import java.util.Set;
+
+import org.junit.Test;
+
+import org.springframework.core.type.AnnotationMetadata;
+import org.springframework.data.gemfire.tests.integration.context.event.GemFireGarbageCollectorApplicationListener;
+import org.springframework.data.gemfire.tests.support.MapBuilder;
+import org.springframework.data.gemfire.tests.util.ReflectionUtils;
+import org.springframework.test.context.event.AfterTestClassEvent;
+import org.springframework.test.context.event.AfterTestExecutionEvent;
+import org.springframework.test.context.event.AfterTestMethodEvent;
+
+/**
+ * Unit Tests for {@link GemFireGarbageCollectorConfiguration}.
+ *
+ * @author John Blum
+ * @see org.junit.Test
+ * @see org.mockito.Mockito
+ * @see org.springframework.data.gemfire.tests.integration.annotation.GemFireGarbageCollectorConfiguration
+ * @since 0.0.17
+ */
+public class GemFireGarbageCollectorConfigurationUnitTests {
+
+	@Test
+	public void setImportMetadataParsesConfiguration() {
+
+		Map<String, Object> annotationAttributes = MapBuilder.<String, Object>newMapBuilder()
+			.put("collectOnEvents", new Class[] { AfterTestMethodEvent.class, AfterTestExecutionEvent.class })
+			.put("tryCleanDiskStoreFiles", true)
+			.build();
+
+		AnnotationMetadata mockAnnotationMetadata = mock(AnnotationMetadata.class);
+
+		doReturn(true).when(mockAnnotationMetadata)
+			.hasAnnotation(EnableGemFireGarbageCollector.class.getName());
+		doReturn(annotationAttributes).when(mockAnnotationMetadata)
+			.getAnnotationAttributes(EnableGemFireGarbageCollector.class.getName());
+
+		GemFireGarbageCollectorConfiguration configuration = new GemFireGarbageCollectorConfiguration();
+
+		assertThat(configuration.getGemFireGarbageCollectorEventTypes()).containsExactly(AfterTestClassEvent.class);
+		assertThat(configuration.isTryCleanDiskStoreFiles()).isFalse();
+
+		configuration.setImportMetadata(mockAnnotationMetadata);
+
+		assertThat(configuration.getGemFireGarbageCollectorEventTypes())
+			.containsExactly(AfterTestMethodEvent.class, AfterTestExecutionEvent.class);
+		assertThat(configuration.isTryCleanDiskStoreFiles()).isTrue();
+
+		verify(mockAnnotationMetadata, times(1))
+			.hasAnnotation(eq(EnableGemFireGarbageCollector.class.getName()));
+		verify(mockAnnotationMetadata, times(1))
+			.getAnnotationAttributes(eq(EnableGemFireGarbageCollector.class.getName()));
+	}
+
+	@Test
+	public void createsGemFireGarbageCollectorApplicationListenerWithDefaultConfiguration()
+			throws NoSuchFieldException {
+
+		GemFireGarbageCollectorConfiguration configuration = new GemFireGarbageCollectorConfiguration();
+
+		assertThat(configuration.getGemFireGarbageCollectorEventTypes()).containsExactly(AfterTestClassEvent.class);
+		assertThat(configuration.isTryCleanDiskStoreFiles()).isFalse();
+
+		GemFireGarbageCollectorApplicationListener listener =
+			(GemFireGarbageCollectorApplicationListener) configuration.gemfireGarbageCollectorApplicationListener();
+
+		assertThat(ReflectionUtils.<Set<Class<?>>>getFieldValue(listener, "gemfireGarbageCollectorEventTypes"))
+			.containsExactly(AfterTestClassEvent.class);
+
+		assertThat(ReflectionUtils.<Boolean>getFieldValue(listener, "tryCleanDiskStoreFilesEnabled"))
+			.isFalse();
+	}
+
+	@Test
+	public void createsGemFireGarbageCollectorApplicationListenerWithCustomConfiguration()
+			throws NoSuchFieldException {
+
+		GemFireGarbageCollectorConfiguration configuration = spy(new GemFireGarbageCollectorConfiguration());
+
+		doReturn(new Class<?>[] { AfterTestMethodEvent.class, AfterTestExecutionEvent.class })
+			.when(configuration).getGemFireGarbageCollectorEventTypes();
+		doReturn(true).when(configuration).isTryCleanDiskStoreFiles();
+
+		assertThat(configuration.getGemFireGarbageCollectorEventTypes())
+			.containsExactly(AfterTestMethodEvent.class, AfterTestExecutionEvent.class);
+		assertThat(configuration.isTryCleanDiskStoreFiles()).isTrue();
+
+		GemFireGarbageCollectorApplicationListener listener =
+			(GemFireGarbageCollectorApplicationListener) configuration.gemfireGarbageCollectorApplicationListener();
+
+		assertThat(ReflectionUtils.<Set<Class<?>>>getFieldValue(listener, "gemfireGarbageCollectorEventTypes"))
+			.containsExactlyInAnyOrder(AfterTestMethodEvent.class, AfterTestExecutionEvent.class);
+
+		assertThat(ReflectionUtils.<Boolean>getFieldValue(listener, "tryCleanDiskStoreFilesEnabled"))
+			.isTrue();
+	}
+}