Added tests for StatisticalSummaryValues.

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141344 13f79535-47bb-0310-9956-ffa450edef68

src/test/org/apache/commons/math/stat/univariate/StatisticalSummaryValuesTest.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2004 The Apache Software Foundation.
+ * 
+ * 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.apache.commons.math.stat.univariate;
+
+
+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+import org.apache.commons.math.TestUtils;
+/**
+ * Test cases for the {@link StatisticalSummaryValues} class.
+ *
+ * @version $Revision: 1.1 $ $Date: 2004/06/29 02:21:33 $
+ */
+
+public final class StatisticalSummaryValuesTest extends TestCase {
+    
+    
+    public StatisticalSummaryValuesTest(String name) {
+        super(name);
+    }
+    
+    public void setUp() {  
+    }
+    
+    public static Test suite() {
+        TestSuite suite = new TestSuite(StatisticalSummaryValuesTest.class);
+        suite.setName("StatisticalSummaryValues Tests");
+        return suite;
+    }
+      
+    public void testSerialization() {
+        StatisticalSummaryValues u = new StatisticalSummaryValues(1, 2, 3, 4, 5, 6);
+        TestUtils.checkSerializedEquality(u); 
+        StatisticalSummaryValues t = (StatisticalSummaryValues) TestUtils.serializeAndRecover(u);
+        verifyEquality(u, t);
+    }
+    
+    public void testEqualsAndHashCode() {
+        StatisticalSummaryValues u  = new StatisticalSummaryValues(1, 2, 3, 4, 5, 6);
+        StatisticalSummaryValues t = null;
+        int emptyHash = u.hashCode();
+        assertTrue("reflexive", u.equals(u));
+        assertFalse("non-null compared to null", u.equals(t));
+        assertFalse("wrong type", u.equals(new Double(0)));
+        t = new StatisticalSummaryValues(1, 2, 3, 4, 5, 6);
+        assertTrue("instances with same data should be equal", t.equals(u));
+        assertEquals("hash code", u.hashCode(), t.hashCode());
+        
+        u = new StatisticalSummaryValues(Double.NaN, 2, 3, 4, 5, 6);
+        t = new StatisticalSummaryValues(1, Double.NaN, 3, 4, 5, 6);
+        assertFalse("instances based on different data should be different", 
+                (u.equals(t) ||t.equals(u)));
+    }
+    
+    private void verifyEquality(StatisticalSummaryValues s, StatisticalSummaryValues u) {
+        assertEquals("N",s.getN(),u.getN());
+        TestUtils.assertEquals("sum",s.getSum(),u.getSum(), 0);
+        TestUtils.assertEquals("var",s.getVariance(),u.getVariance(), 0);
+        TestUtils.assertEquals("std",s.getStandardDeviation(),u.getStandardDeviation(), 0);
+        TestUtils.assertEquals("mean",s.getMean(),u.getMean(), 0);
+        TestUtils.assertEquals("min",s.getMin(),u.getMin(), 0);
+        TestUtils.assertEquals("max",s.getMax(),u.getMax(), 0);   
+    }
+}