JQuery select all rows containing certain text within a td in the row

I have a table for which I am attempting to select all rows which have a td containing the text 'Test' and then hide the td with class 'ms-vb-icon' on all the matched rows

I intitally had the code below but this only hide the class on the last matched row

 $("td:contains('test'):last").parent().children(".ms-vb-icon").css("visibility","hidden");

So I tried this but its not working...

 $("tr:has(td:contains('test')").each(function(){
  (this).children(".ms-vb-icon").css("visibility","hidden");
  });

Simplified html look like this:

<table>
<tbody>
<tr>
<td class=ms-vb-icon></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td>test</td>
</tr>
</tbody>
<table>