mssql_session - Handling cases where the data is nil (#2752)

* Fixing bug where the row data returned is nil

Signed-off-by: Noel Georgi <noel.georgi@reancloud.com>

lib/utils/database_helpers.rb

@@ -10,7 +10,7 @@ module DatabaseHelper
     end
 
     def value
-      @row[@name.downcase]
+      @row.nil? ? '' : @row[@name.downcase]
     end
 
     def to_s

test/unit/utils/database_helpers_test.rb

@@ -0,0 +1,19 @@
+# encoding: utf-8
+
+require 'helper'
+
+describe DatabaseHelper do
+  describe DatabaseHelper::SQLColumn do
+    def column(row = { 'test' => 'value' })
+      DatabaseHelper::SQLColumn.new(row, 'test')
+    end
+
+    it 'has a valid column value' do
+      column.value.must_equal 'value'
+    end
+
+    it 'returns empty when nil' do
+      column(nil).value.must_equal ''
+    end
+  end
+end