fixed failing tests to not rely on runtime equivalence of database performance.

Author: craiggwilson

MongoDB.DriverUnitTests/Linq/ExplainTests.cs

@@ -47,17 +47,25 @@ public void Setup()
         public void TestExplainFromLinqQueryEqualsExplainFromCursor()
         {
             var linqExplain = _collection.AsQueryable<C>().Where(c => c.X == 2 && c.Y == 1).Take(1).Explain();
-            var queryExplain =
-                _collection.FindAs<C>(Query.And(Query.EQ("X", 2), Query.EQ("Y", 1))).SetLimit(1).Explain();
+            var queryExplain = _collection.FindAs<C>(Query.And(Query.EQ("X", 2), Query.EQ("Y", 1))).SetLimit(1).Explain();
+
+            // millis could be different, so we'll ignore that difference.
+            linqExplain.Remove("millis");
+            queryExplain.Remove("millis");
+
             Assert.AreEqual(linqExplain, queryExplain);
         }
 
         [Test]
         public void TestVerboseExplainFromLinqQueryEqualsVerboseExplainFromCursor()
         {
             var linqExplain = _collection.AsQueryable<C>().Where(c => c.X == 2 && c.Y == 1).Take(1).Explain(true);
-            var queryExplain =
-                _collection.FindAs<C>(Query.And(Query.EQ("X", 2), Query.EQ("Y", 1))).SetLimit(1).Explain(true);
+            var queryExplain = _collection.FindAs<C>(Query.And(Query.EQ("X", 2), Query.EQ("Y", 1))).SetLimit(1).Explain(true);
+
+            // millis could be different, so we'll ignore that difference.
+            linqExplain.Remove("millis");
+            queryExplain.Remove("millis");
+
             Assert.AreEqual(linqExplain, queryExplain);
         }