git-svn-id: https://se1.informatik.uni-wuerzburg.de/usvn/svn/code/code/DMM/trunk@9556 9e42b895-fcda-4063-8a3b-11be15eb1bbd

edu.kit.ipd.descartes.adaptation.test/src/edu/kit/ipd/descartes/adaptation/util/WeightingFunctionHelperTest.java

+package edu.kit.ipd.descartes.adaptation.util;
+
+import static org.junit.Assert.assertEquals;
+
+import org.eclipse.emf.common.util.EList;
+import org.eclipse.emf.common.util.URI;
+import org.junit.Before;
+import org.junit.Test;
+
+import edu.kit.ipd.descartes.adaptation.model.PerformanceDataRepositoryHandler;
+import edu.kit.ipd.descartes.mm.adaptation.AdaptationFactory;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedMetric;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.Impact;
+import edu.kit.ipd.descartes.perfdatarepo.MetricType;
+import edu.kit.ipd.descartes.perfdatarepo.PerfdatarepoFactory;
+import edu.kit.ipd.descartes.perfdatarepo.PerformanceDataRepository;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+public class WeightingFunctionHelperTest {
+
+	private static final String PERF_DATA_REPO_XMI_FILE = "../ExampleModels/Adaptation/PerformanceDataRepositoryDummy.xmi";
+	private static final double UTIL_WEIGHT = 2.0d;
+	
+	PerformanceDataRepositoryHandler perfDataHandler = PerformanceDataRepositoryHandler.getInstance();
+	PerformanceDataRepository perfDataRepo = null;
+	WeightingFunction function = null;
+	
+	private enum METRIC_TYPES {
+		UTILIZATION, 
+		RESPONSE_TIME;
+	}
+
+	private MetricType getTypeHelper(METRIC_TYPES mType) {
+		EList<MetricType> types = perfDataRepo.getMetricTypes();
+		switch (mType) {
+		case UTILIZATION:
+			return types.get(0);
+		case RESPONSE_TIME:
+			return types.get(1);
+		default:
+			return null;
+		}
+	}
+	
+	@Before
+	public void setUp() throws Exception {
+		perfDataRepo = (PerformanceDataRepository) perfDataHandler.load(URI.createFileURI(PERF_DATA_REPO_XMI_FILE));
+		MetricType metricType = getTypeHelper(METRIC_TYPES.UTILIZATION);
+
+		function = AdaptationFactory.eINSTANCE.createWeightingFunction();
+		WeightedMetric wUtil = AdaptationFactory.eINSTANCE.createWeightedMetric();
+		wUtil.setId("1");
+		wUtil.setName("UtilizationMetricWeight");
+		wUtil.setWeight(UTIL_WEIGHT);
+		wUtil.setMetricType(metricType);
+		function.getWeightedMetrics().add(wUtil);
+	}
+
+	@Test
+	public void testGetWeightForMetricType() {
+		double weight = 0.0;
+		MetricType metricType = getTypeHelper(METRIC_TYPES.RESPONSE_TIME);
+		weight = WeightingFunctionHelper.getWeightForMetricType(function, metricType);
+		assertEquals(Double.NaN, weight, 0.0);
+
+		metricType = getTypeHelper(METRIC_TYPES.UTILIZATION);
+		weight = WeightingFunctionHelper.getWeightForMetricType(function, metricType);
+		assertEquals(UTIL_WEIGHT, weight, 0.0);
+	}
+
+	@Test
+	public void testGetValueForMetricType() {
+		double testValue = 0;
+		MetricType metricType = getTypeHelper(METRIC_TYPES.UTILIZATION);
+		
+		Result emptyResult = PerfdatarepoFactory.eINSTANCE.createResult();
+		testValue = WeightingFunctionHelper.getValueForMetricType(metricType, emptyResult);
+		assertEquals(Double.NaN, testValue, 0);
+		
+		Impact impact = perfDataRepo.getImpactHistory().get(0);
+		Result before = impact.getBefore();
+		testValue = WeightingFunctionHelper.getValueForMetricType(metricType, before);
+		assertEquals(0.4, testValue, 0);
+	}
+
+}