Feature/more tests (#154)

* First batch of new tests for increasing code coverage

* Fix for merge

* Added comments to tests

test/Microsoft.SqlTools.ServiceLayer.Test/Connection/ReliableConnectionTests.cs

@@ -720,6 +720,22 @@ namespace Microsoft.SqlTools.ServiceLayer.Test.Connection
             Assert.True(SqlSchemaModelErrorCodes.IsInterpretationErrorCode(Interpretation.InterpretationBaseCode+ 1));
             Assert.True(SqlSchemaModelErrorCodes.IsStatementFilterError(StatementFilter.StatementFilterBaseCode + 1));        
         }
+
+        [Fact]
+        public void RetryCallbackEventArgsTest()
+        {
+            var exception = new Exception();
+            var timespan = TimeSpan.FromMinutes(1);
+
+            // Given a RetryCallbackEventArgs object with certain parameters
+            var args = new RetryCallbackEventArgs(5, exception, timespan);
+
+            // If I check the properties on the object
+            // Then I expect the values to be the same as the values I passed into the constructor
+            Assert.Equal(5, args.RetryCount);
+            Assert.Equal(exception, args.Exception);
+            Assert.Equal(timespan, args.Delay);
+        }
     }
 }