I am new at selenium testing and am writing a bunch of tests for a webpage that relies heavily on javascript user interaction.

At first I wrote a lot of assertions of the style

 If I press button A" then
      assert number of visible rows = x,
      assert checkboxes checked are such
      assert title = bar
      .... [20 more]

and so on.

Then I switched to checksumming the HTML using MD5:

 If I press button A" then 
     assert md5(html) = 8548bccac94e35d9836f1fec0da8115c.  

And it made my life a whole lot easier...

But is this a bad practice in any way?