Changes between Version 27 and Version 28 of Writing Layout Tests for DumpRenderTree

Timestamp:

Oct 27, 2011, 5:12:03 PM (13 years ago)

Author:

jchaffraix@webkit.org

Comment:

how to write good test case (edit 3), how to tweak pixel / text dumping

Writing Layout Tests for DumpRenderTree

@@ -158 +158 @@
   * add a 0 opacity to your text.
 
-'''Important note:''' For the 2 last points, the text will still be on the text render tree dump!
+'''Important note:''' For the 2 last points, the text will still be on the text render tree dump! You can however disable the text dump if you don't need it, see below.
 
 If you test '''really needs to use some fonts''', make sure you use the ''Ahem'' font as it is a very portable font. Make sure to specify the font-height too not to depend on the platform (FIXME: not sure if this is really needed but better safe than sorry).
@@ -166 +166 @@
 Native controls cover anything that is painted by the OS. In WebKit, this means buttons, scroll bars, media players, ...
 
-You can use the previous tips for text here to hide your button if you don't need.
+You can use the previous tips for text here to hide your button if you don't need it.
 
 For scroll bars, you just have to use the following rule in your CSS to disable them:
@@ -173 +173 @@
 overflow: hidden;
 }}}
+
+=== How to disable render tree dumps but keep the pixels ===
+
+If you want to just dump the pixels but don't care about DRT's text dump. You can use the following trick:
+
+{{{
+if (window.layoutTestController)
+    layoutTestController.dumpAsText(true);
+}}}
+
+This is '''not''' a typo. It is an extremely confusing syntax but this disables the text dump (you dump an empty text file).
+
+=== How to disable the pixel dumps but keep the render tree dump ===
+
+There is currently no way for you to do that.
 
 = Writing JavaScript-based DOM-only Test Cases =