Re: [blink-dev] Question : How to create *-expected.png for blink_web_tests

[Xianzhu Wang]

See also:
https://chromium.googlesource.com/chromium/src/+/HEAD/docs/testing/web_test_expectations.md#How-to-rebaseline
for other options.

On Mon, Mar 14, 2022 at 3:32 PM 'Mathias Bynens' via blink-dev <
blink-dev@chromium.org> wrote:

> Use --reset-results:
> https://chromium.googlesource.com/chromium/src/+/HEAD/docs/testing/web_tests.md#test-harness-options
>
> On Mon, Mar 14, 2022 at 7:39 AM Jihwan Kim <bluewhale.m...@gmail.com>
> wrote:
>
>> I'm fixing issue with pickers, but some tests failed.
>> It was a failure due to image diff.
>>
>> Since the resource (css) file is modified, it is correct that the image
>> diff appears,
>> So I have to modify the some *-expected.png files.
>> (ex: datetimelocal-month-year-selector-expected.png)
>>
>> And my question is -
>> Are there any rules or tools to create *-expected.png?
>> or is it manual work (crop after screen capture, etc.)?
>>
>> This is my first time about an image comparison test,
>> so please understand even if the question is too basic.
>>
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