1 files changed, 55 insertions, 0 deletions
diff --git a/watchmaker/examples/src/java/test/org/uncommons/watchmaker/examples/geneticprogramming/ConstantTest.java b/watchmaker/examples/src/java/test/org/uncommons/watchmaker/examples/geneticprogramming/ConstantTest.java
new file mode 100644
index 0000000..1a5eb36
--- /dev/null
+++ b/watchmaker/examples/src/java/test/org/uncommons/watchmaker/examples/geneticprogramming/ConstantTest.java
@@ -0,0 +1,55 @@
+//=============================================================================
+// Copyright 2006-2010 Daniel W. Dyer
+//
+// 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.uncommons.watchmaker.examples.geneticprogramming;
+
+import org.testng.annotations.Test;
+
+/**
+ * Unit test for the {@link Constant} node type.
+ * @author Daniel Dyer
+ */
+public class ConstantTest
+{
+    @Test
+    public void testEquality()
+    {
+        Constant zero = new Constant(0);
+        Constant one = new Constant(1);
+        Constant anotherOne = new Constant(1);
+
+        assert zero.equals(zero) : "Equality must be reflexive.";
+        assert one.equals(anotherOne) : "Same-valued constants must be equal.";
+        assert anotherOne.equals(one) : "Equality must be symmetric.";
+        assert one.hashCode() == anotherOne.hashCode() : "Equal objects must have equal hash codes.";
+        assert !zero.equals(one) : "Different valued constants must be non-equal.";
+        assert !zero.equals(null) : "No non-null object should not be considered equal to null.";
+        assert !zero.equals(Double.valueOf(0)) : "Objects of different types should not be equal.";
+    }
+
+
+    @Test(expectedExceptions = IndexOutOfBoundsException.class)
+    public void testGetInvalidNodeIndex()
+    {
+        new Constant(1).getNode(1); // Should throw an exception.
+    }
+
+
+    @Test(expectedExceptions = IndexOutOfBoundsException.class)
+    public void testReplaceInvalidNodeIndex()
+    {
+        new Constant(1).replaceNode(1, new Constant(2)); // Should throw an exception.
+    }
+}