From 74f866127615cf3027402cb61449c44c8d6a35fb Mon Sep 17 00:00:00 2001
From: Rajarshi Guha <rajarshi.guha@gmail.com>
Date: Mon, 18 Oct 2010 22:51:55 -0400
Subject: [PATCH] Added unit test for bug 2853035, which appears to be resolved
 now

---
 .../CDKHueckelAromaticityDetectorTest.java    | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/test/org/openscience/cdk/aromaticity/CDKHueckelAromaticityDetectorTest.java b/src/test/org/openscience/cdk/aromaticity/CDKHueckelAromaticityDetectorTest.java
index e9e37a84a3e..0ee70b4c2af 100644
--- a/src/test/org/openscience/cdk/aromaticity/CDKHueckelAromaticityDetectorTest.java
+++ b/src/test/org/openscience/cdk/aromaticity/CDKHueckelAromaticityDetectorTest.java
@@ -907,5 +907,33 @@ public void test3001616() throws Exception {
         }
     }
 
+    /**
+     * @cdk.bug 2853035
+     */
+    @Test
+    public void testBug2853035() throws Exception {
+        SmilesParser sp = new SmilesParser(DefaultChemObjectBuilder.getInstance());
+        IMolecule mol = sp.parseSmiles("C(=O)c1cnn2ccccc12");
+        AtomContainerManipulator.percieveAtomTypesAndConfigureAtoms(mol);
+        Assert.assertTrue(CDKHueckelAromaticityDetector.detectAromaticity(mol));
+        for (IAtom atom : mol.atoms()) {
+            if (atom.getSymbol().equals("N")) {
+                Assert.assertTrue(atom.getFlag(CDKConstants.ISAROMATIC));
+                List<IBond> conbonds = mol.getConnectedBondsList(atom);
+                for (IBond bond : conbonds) {
+                    if (bond.getOrder().equals(IBond.Order.SINGLE)) continue;
+                    Assert.assertTrue(bond.getFlag(CDKConstants.ISAROMATIC));
+                }
+            }
+        }
+        SpanningTree st = new SpanningTree(mol);
+        IRingSet ringSet = st.getAllRings();
+        for (IAtomContainer ring : ringSet.atomContainers()) {
+            for (IBond bond : ring.bonds()) {
+                Assert.assertTrue(bond.getFlag(CDKConstants.ISAROMATIC));
+            }
+        }
+    }
+
 }