Add unit tests.
diff --git a/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/PointVectorValuePairTest.java b/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/PointVectorValuePairTest.java
new file mode 100644
index 0000000..dd1f3d3
--- /dev/null
+++ b/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/PointVectorValuePairTest.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.math4.legacy.optim;
+
+import org.apache.commons.math4.legacy.TestUtils;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class PointVectorValuePairTest {
+ @Test
+ public void testAccessors1() {
+ final double[] k = new double[] { 1.0, 2.0, 3.0 };
+ final double[] v = new double[] { 4.0, 5.0 };
+
+ final PointVectorValuePair pv = new PointVectorValuePair(k, v);
+
+ final double[] kC = pv.getPoint();
+ kC[0] = 1 - kC[0];
+ final double[] vC = pv.getValue();
+ vC[0] = 1 - vC[0];
+
+ // Check that "pv" has not been changed.
+ TestUtils.assertEquals("k", k, pv.getPoint(), 0d);
+ TestUtils.assertEquals("v", v, pv.getValue(), 0d);
+ }
+
+ @Test
+ public void testAccessors2() {
+ final double[] k = new double[] { 1.0, 2.0, 3.0 };
+ final double[] v = new double[] { 4.0, 5.0 };
+
+ final PointVectorValuePair pv = new PointVectorValuePair(k, v);
+
+ final double[] kC = pv.getPointRef();
+ kC[0] = 1 - kC[0];
+ final double[] vC = pv.getValueRef();
+ vC[0] = 1 - vC[0];
+
+ // Check that "pv" has been changed.
+ Assert.assertEquals(kC[0], pv.getPoint()[0], 0d);
+ Assert.assertEquals(vC[0], pv.getValue()[0], 0d);
+ }
+}
