Test to ensure redundant orderings are eliminated.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/test/java/com/amazon/carbonado/qe/TestOrderingScore.java b/src/test/java/com/amazon/carbonado/qe/TestOrderingScore.java
index ac407ec..91b5676 100644
--- a/src/test/java/com/amazon/carbonado/qe/TestOrderingScore.java
+++ b/src/test/java/com/amazon/carbonado/qe/TestOrderingScore.java
@@ -520,4 +520,27 @@ public class TestOrderingScore extends TestCase {
         assertEquals(0, score.getRemainderCount());

         assertEquals(false, score.shouldReverseOrder());

     }

+

+    public void testReduce() throws Exception {

+        // Tests that redundant ordering properties are removed.

+        final StorableIndex<StorableTestBasic> ix;

+        List<OrderedProperty<StorableTestBasic>> ops;

+        OrderingScore score;

+        Filter<StorableTestBasic> filter;

+

+        ix = makeIndex(StorableTestBasic.class, "id", "intProp", "doubleProp");

+        ops = makeOrderings(StorableTestBasic.class, 

+                            "intProp", "intProp", "id", "doubleProp", "intProp", "doubleProp",

+                            "longProp", "longProp", "id", "intProp", "doubleProp");

+        filter = Filter.filterFor(StorableTestBasic.class, "id = ?");

+

+        score = OrderingScore.evaluate(ix, filter, ops);

+        assertEquals(2, score.getHandledCount());

+        assertEquals(1, score.getRemainderCount());

+        assertEquals(false, score.shouldReverseOrder());

+

+        assertEquals("+intProp", score.getHandledOrderings().get(0).toString());

+        assertEquals("+doubleProp", score.getHandledOrderings().get(1).toString());

+        assertEquals("+longProp", score.getRemainderOrderings().get(0).toString());

+    }

 }