 			scan.setFilter columnPrefixFilter: prefix: testRows[2].col
 
 			scan.next (err, row) ->
-				assert.equal err, null, "scan.next returned an error: #{err}"
+				assert.notOk err, "scan.next returned an error: #{err}"
 				assert.equal row.row, testRows[2].row ,"rowKey doesn't match"
 				assert.equal row.cols["#{testRows[2].cf}:#{testRows[2].col}"].value, testRows[2].val, "value doesn't match"
 
 				scan.next (err, row) ->
-					assert.equal err, null, "scan.next returned an error: #{err}"
+					assert.notOk err, "scan.next returned an error: #{err}"
 					assert.equal Object.keys(row), 0, "scan.next should return empty object"
 					done()
 

					del.deleteFamily tCf

					client.delete testTable, del, (err, res) ->
						assert.equal err, null, "delete returned an error: #{err}"
						assert.equal res.processed, yes, "delete wasn't processed"
						cb()
				(cb) ->

				o

			client.mput testTable, puts, (err, res) ->
				assert.notOk err, "mput returned an error: #{err}"
				done()

		it 'should put multiple rows via array of Put objects', (done) ->
