web-platform-tests/wpt

Test CSSOM resolved values for different `position` values

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#5,897 opened on May 11, 2017

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css-positioncssomgood first issuetype:missing-coverage

Description

https://drafts.csswg.org/cssom/#resolved-values

See https://github.com/w3c/csswg-drafts/issues/1346 for the spec issue around position: sticky, though note per the original discussion on the Chromium bug tracker position: fixed makes no more sense as currently spec'd.

http://output.jsbin.com/wunoxod/quiet is a simple test page.

Results:

position: static relative sticky absolute fixed
Chrome 58 auto 0px 0px 224px 296px
Firefox 53 auto 0px auto 224px 296px
Edge 14 auto auto n/a auto auto
Safari 10 auto auto auto auto auto

Contributor guide

Tech stack
htmlcss
Domain
testing
Issue type
test
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
understanding of CSSOM specfamiliarity with wpt test harness
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Review the CSSOM resolved values spec at https://drafts.csswg.org/cssom/#resolved values and the test page at http://output.jsbin.com/wunoxod/quiet. Look at existing tests in the wpt repository under css/cssom/ for patterns. The issue requires writing tests that verify the resolved values for position static, relative, sticky, absolute, and fixed across browsers, focusing on the discrepancies noted. No maintainer comments or linked PRs exist, so the solution should propose a new test file in the appropriate directory.
Test CSSOM resolved values for different `position` values · web-platform-tests/wpt#5897 | Good First Issue