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RE: background-size-023 seems incorrect (Re: New tests submission for css3 background-clip/-origin/-size)

From: Zhang, Zhiqiang <zhiqiang.zhang@intel.com>
Date: Mon, 15 Oct 2012 13:20:31 +0000
To: "Gérard Talbot" <css21testsuite@gtalbot.org>
CC: "public-css-testsuite@w3.org" <public-css-testsuite@w3.org>, "Christensen, Kenneth" <kenneth.christensen@intel.com>, "Zhang, Haili" <haili.zhang@intel.com>, "Yu, Ling L" <ling.l.yu@intel.com>, "Yang, Lei A" <lei.a.yang@intel.com>
Message-ID: <0EA8FB2070816C499E0A50AC1B0B5C161D5902@SHSMSX101.ccr.corp.intel.com>
> 
> http://test.csswg.org/source/contributors/intel/submitted/css3-
> background/background-size-023.html
> 
> <meta name="assert" content="Check if 'background-size' is '50% auto'
> and 'background-clip is 'padding-box' that it stretches the image so
> that exactly two copies fit horizontally" />
> 
> The background-image is stretched[1] from 60px (width) to 75px (which is
> half of the width of padding-box) and then it gets repeated horizontally
> because the initial value for 'background-repeat' is 'repeat'.
> 
> So the test would still pass if it had been
> background-size: 13% auto;
> or
> background-size: 23% auto;
> or
> background-size: 13% auto;
> or even without any background-size declaration.
> 
> This test will not fail in only-CSS1-capable browsers.
> 
> Because the green image is undifferentiated and undifferentiable, the
> number of horizontal copies of the image is impossible to visualize and
> is not really relevant in the test anyway.

Improved this test and http://test.csswg.org/source/contributors/intel/submitted/css3-background/background-size-022.html with the cat.png image as background for differentiation. Thank you.

> 
> [1]: I now understand why the assert text uses the verb "stretch". I
> missed that in my previous email.
> 
Received on Monday, 15 October 2012 13:21:21 GMT

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