Lucene.Net.Search.QueryUtils.CheckHashEquals C# (CSharp) Method

        public static void CheckHashEquals(Query q)
        {
            Query q2 = (Query)q.Clone();
            CheckEqual(q, q2);

            Query q3 = (Query)q.Clone();
            q3.Boost = 7.21792348f;
            CheckUnequal(q, q3);

            // test that a class check is done so that no exception is thrown
            // in the implementation of equals()
            Query whacky = new QueryAnonymousInnerClassHelper();
            whacky.Boost = q.Boost;
            CheckUnequal(q, whacky);

            // null test
            Assert.IsFalse(q.Equals(null));
        }

        public virtual void  TestEqualsAndHash()
        {
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test1", 4, 10, 20, true, true));
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test2", 4, 10, 20, false, true));
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test3", 4, 10, 20, true, false));
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test4", 4, 10, 20, false, false));
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test5", 4, 10, null, true, true));
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test6", 4, null, 20, true, true));
            QueryUtils.CheckHashEquals(NumericRangeQuery.NewIntRange("test7", 4, null, null, true, true));
            QueryUtils.CheckEqual(NumericRangeQuery.NewIntRange("test8", 4, 10, 20, true, true),
                                  NumericRangeQuery.NewIntRange("test8", 4, 10, 20, true, true));

            QueryUtils.CheckUnequal(NumericRangeQuery.NewIntRange("test9", 4, 10, 20, true, true),
                                    NumericRangeQuery.NewIntRange("test9", 8, 10, 20, true, true));

            QueryUtils.CheckUnequal(NumericRangeQuery.NewIntRange("test10a", 4, 10, 20, true, true),
                                    NumericRangeQuery.NewIntRange("test10b", 4, 10, 20, true, true));

            QueryUtils.CheckUnequal(NumericRangeQuery.NewIntRange("test11", 4, 10, 20, true, true),
                                    NumericRangeQuery.NewIntRange("test11", 4, 20, 10, true, true));

            QueryUtils.CheckUnequal(NumericRangeQuery.NewIntRange("test12", 4, 10, 20, true, true),
                                    NumericRangeQuery.NewIntRange("test12", 4, 10, 20, false, true));

            QueryUtils.CheckUnequal(NumericRangeQuery.NewIntRange("test13", 4, 10, 20, true, true),
                                    NumericRangeQuery.NewFloatRange("test13", 4, 10f, 20f, true, true));
            // the following produces a hash collision, because Long and Integer have the same hashcode, so only test equality:

            Query q1 = NumericRangeQuery.NewIntRange("test14", 4, 10, 20, true, true);
            Query q2 = NumericRangeQuery.NewLongRange("test14", 4, 10L, 20L, true, true);

            Assert.IsFalse(q1.Equals(q2));
            Assert.IsFalse(q2.Equals(q1));
        }