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Fails to detect difference #21

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jfirebaugh opened this issue May 19, 2016 · 3 comments
Closed

Fails to detect difference #21

jfirebaugh opened this issue May 19, 2016 · 3 comments
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@jfirebaugh
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expected.png:

image

actual.png:

image

$ pixelmatch {expected,actual,diff}.png
match: 16ms
different pixels: 0
error: 0%
@jfirebaugh jfirebaugh mentioned this issue May 19, 2016
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@jfirebaugh
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If I use a color other than pure black, it works.

@jfirebaugh
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Maybe failing for the same reasons as #13 (comment).

@mourner mourner added the bug label Jun 21, 2016
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mourner commented Jun 21, 2016

Yes, the reason for the bug is that the first version is alpha-blended with black before comparison.

@mourner mourner closed this as completed Jun 30, 2016
@tommypreger tommypreger mentioned this issue Mar 27, 2017
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@mollymerp mollymerp mentioned this issue Jan 13, 2018
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ReDrUm pushed a commit to ReDrUm/pixelmatch that referenced this issue Sep 20, 2019
@10xLaCroixDrinker
Merge pull request mapbox#21 in ONE/jest-image-snapshot from feature/…
19ef5c5 
…community to master

* commit '1723d769cc8e6720c54361cdb18b1cfcfffc5e9d':
  docs(community): added CoC
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@mourner @jfirebaugh