Thanks for the in-depth explanation!

On Wed, Sep 4, 2019 at 10:35 PM Yi Shen <shenyi....@gmail.com> wrote:

> Hi Clement.
>
> The problem we are trying to solve by this testing tool is:
> Running all the exists HTML test cases[1] automatically and compare current
> developing version to the previous stable release to test if any function
> is broken.
> It's more like regression testing.
>
> Jest and jest-image-snapshot is my first option.
> But jest-image-snap is designed to compare with the pre-generated baseline
> snapshots. For us, there are some problems:
>
> 1. Not like normal tests, the pre-generated snapshots are depend on
> puppeteer versions, operating systems, or even hardwares.
> For example the default system font on macOS and windows are different.
> These are all unnecessary variables in a testing system, which we should
> eliminate.
> 2. Baseline snapshots for nearly 400 tests may have a huge size.
> 3. There is also a small problem, we need to update the baseline snapshots
> when the test cases are changed.
>
> There are some workarounds on this issue, like developers generate his own
> baseline snapshots, instead of uploading the baseline snapshots.
> But I think a better solution for us is picking out the underlying
> pixelmatch[2] and rewrite the testing module, which will do:
> 1. Download the latest stable ECharts release.
> 2. Run test cases with both stable release and developing version to get
> snapshots, in a consistent puppeeter, OS, and hardware.
> 3. Compare the snapshots and check if there is any diff.
>
> At last, here are some downsides about this testing tool:
> 1. It can't test new add functions. But it's mainly for regression testing
> so I think it's not a problem.
> 2. Running each test case twice may be time time consuming.
>
> [1] https://github.com/apache/incubator-echarts/tree/master/test
> [2] https://github.com/mapbox/pixelmatch
>
> On Thu, Sep 5, 2019 at 8:48 AM Clement Ho <clem...@gitlab.com.invalid>
> wrote:
>
> > Curious as to the decision not to use something like jest image
> snapshots.
> > Could you share your thought process?
> >
> > On Tue, Sep 3, 2019 at 7:23 AM Yi Shen <shenyi....@gmail.com> wrote:
> >
> > > Thanks Ovilia.
> > >
> > > The progress and todo is in the pull request description. The next big
> > > thing is supporting interaction testing in the tool.
> > >
> > > On Tue, Sep 3, 2019 at 8:17 PM Ovilia <oviliazh...@gmail.com> wrote:
> > >
> > > > Hi Shen,
> > > >
> > > > Very nice work!
> > > > Can we know more about the next plan about the test framework?
> > > >
> > > > Wenli
> > > >
> > > >
> > > > On Tue, Sep 3, 2019 at 8:05 PM SHUANG SU <sushuang0...@gmail.com>
> > wrote:
> > > >
> > > > > Wonderful!
> > > > >
> > > > > ------------------------------
> > > > >  Su Shuang (100pah)
> > > > > ------------------------------
> > > > >
> > > > >
> > > > >
> > > > > On Tue, 3 Sep 2019 at 18:51, Yi Shen <shenyi....@gmail.com> wrote:
> > > > >
> > > > > > Hi all,
> > > > > >
> > > > > > I opened a pull request about adding a tool for running all
> > > > > > tests automatically
> > > > > >
> > > > > > https://github.com/apache/incubator-echarts/pull/11154
> > > > > >
> > > > > > Please leave your comments if you have any suggestions. Thanks
> > > > > >
> > > > > > --
> > > > > > Yi Shen
> > > > > > Senior Developer
> > > > > > Baidu, Inc.
> > > > > >
> > > > >
> > > >
> > >
> > >
> > > --
> > > Yi Shen
> > > Senior Developer
> > > Baidu, Inc.
> > >
> >
>
>
> --
> Yi Shen
> Senior Developer
> Baidu, Inc.
>

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