Added a test to MoleculeSetTest, which tests that the clone() does no…

…t change the MoleculeSEt

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>

src/test/org/openscience/cdk/MoleculeSetTest.java

@@ -20,9 +20,14 @@
  */
 package org.openscience.cdk;
 
+import junit.framework.Assert;
+
 import org.junit.BeforeClass;
+import org.junit.Test;
 import org.openscience.cdk.interfaces.AbstractMoleculeSetTest;
 import org.openscience.cdk.interfaces.IChemObject;
+import org.openscience.cdk.interfaces.IMolecule;
+import org.openscience.cdk.interfaces.IMoleculeSet;
 import org.openscience.cdk.interfaces.ITestObjectBuilder;
 
 /**
@@ -41,5 +46,16 @@ public IChemObject newTestObject() {
             }
         });
     }
-
+
+    @Test public void testClone() throws CloneNotSupportedException{
+        IMoleculeSet moleculeSet = DefaultChemObjectBuilder.getInstance()
+            .newMoleculeSet();
+        IMolecule mol = moleculeSet.getBuilder().newMolecule();
+        moleculeSet.addAtomContainer(mol);
+        //we test that the molecule added is actually in the moleculeSet
+        Assert.assertSame(mol, moleculeSet.getAtomContainer(0));
+        moleculeSet.clone();
+        //after the clone, the molecule added should still be in the moleculeSet
+        Assert.assertSame(mol, moleculeSet.getAtomContainer(0));
+    }
 }