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feat(test-runner): introduce pixelCount and pixelRatio options #12169

Merged
merged 2 commits into from
Feb 17, 2022
Merged

feat(test-runner): introduce pixelCount and pixelRatio options #12169

merged 2 commits into from
Feb 17, 2022

Commits on Feb 17, 2022

  1. feat(test-runner): introduce pixelCount and pixelRatio options 

    This patch adds additional options to `toMatchSnapshot` method:
- `pixelCount` - acceptable number of pixels that differ to still
  consider images equal.
- `pixelRatio` - acceptable percentage of pixels that differ to still
  consider images equal.

Since some anti-aliasing artifacts still can cripple in, we default
`pixelCount` to some arbitrary small number - `17` - to improve
tolerance.

Fixes microsoft#12167, microsoft#10219
    @aslushnikov
    aslushnikov committed Feb 17, 2022
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  2. address comments

    @aslushnikov
    aslushnikov committed Feb 17, 2022
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