Github user pdxrunner commented on a diff in the pull request:

    https://github.com/apache/geode/pull/580#discussion_r129397800
  
    --- Diff: 
geode-core/src/test/java/org/apache/geode/cache/query/internal/OrderByComparatorJUnitTest.java
 ---
    @@ -173,36 +157,58 @@ public void testUnsupportedOrderByForPR() throws 
Exception {
     
       @Test
       public void testSupportedOrderByForRR() throws Exception {
    -
         String unsupportedQueries[] =
    -        {"select distinct p.status from /portfolio1 p order by p.status, 
p.ID",
    -
    -        };
    +        {"select distinct p.status from /portfolio1 p order by p.status, 
p.ID"};
         Object r[][] = new Object[unsupportedQueries.length][2];
    -    QueryService qs;
    -    qs = CacheUtils.getQueryService();
         Position.resetCounter();
    -    // Create Regions
     
    +    // Create Regions
         Region r1 = CacheUtils.createRegion("portfolio1", Portfolio.class);
     
         for (int i = 0; i < 50; i++) {
           r1.put(new Portfolio(i), new Portfolio(i));
         }
     
         for (int i = 0; i < unsupportedQueries.length; i++) {
    -      Query q = null;
    -
    +      Query q;
           CacheUtils.getLogger().info("Executing query: " + 
unsupportedQueries[i]);
           q = CacheUtils.getQueryService().newQuery(unsupportedQueries[i]);
           try {
             r[i][0] = q.execute();
    -
           } catch (QueryInvalidException qe) {
             qe.printStackTrace();
             fail(qe.toString());
           }
         }
       }
     
    +  /**
    +   * Tests three cases that were not originally covered by the original 
tests in this class. (To
    +   * confirm that these tests cover all cases in OrderByComparator, run 
them with coverage.)
    +   */
    +  @Test
    +  public void testCompareMethodEdgeCases() throws Exception {
    --- End diff --
    
    To adhere to the guideline that each test should only check thing, I would 
break this up into separate tests.


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