@image_comparison decorator and unittests

Hi all,

is it possible to use the @image_comparison decorator for tests generated within a unittest.TestCase class?

With my attempts so far the decorator was indeed instanicated at run time but the test was not called, i.e. the test would allways pass... Running the test with decorator from outside the class works fine.

Any idea? Thanks,

Fabien

Paul Hobson expressed interest in making it easier to use the image comparison tests out side of the mpl test suite

Tom

···

On Thu, Jul 30, 2015, 9:28 AM Fabien <fabien.maussion@…287…> wrote:

Hi all,

is it possible to use the @image_comparison decorator for tests

generated within a unittest.TestCase class?

With my attempts so far the decorator was indeed instanicated at run

time but the test was not called, i.e. the test would allways pass…

Running the test with decorator from outside the class works fine.

Any idea? Thanks,

Fabien



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Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Thomas Robitailles pytest image comparison plugin might also be of interest
https://github.com/astrofrog/pytest-mpl

Jens

tor. 30. jul. 2015 kl. 14.43 skrev Thomas Caswell <tcaswell@…287…>:

···

Paul Hobson expressed interest in making it easier to use the image comparison tests out side of the mpl test suite

Tom

On Thu, Jul 30, 2015, 9:28 AM Fabien <fabien.maussion@…287…> wrote:

Hi all,

is it possible to use the @image_comparison decorator for tests

generated within a unittest.TestCase class?

With my attempts so far the decorator was indeed instanicated at run

time but the test was not called, i.e. the test would allways pass…

Running the test with decorator from outside the class works fine.

Any idea? Thanks,

Fabien



Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users



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Matplotlib-users@lists.sourceforge.net

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Fabien,

The @image_comparison operator is still somehwat of a black box for me. But I can confirm your observation that it only works on top-level test functions, not within a class.

It’s on my long, and slowly shifting backlog of things to try to improve.

-paul

···

On Thu, Jul 30, 2015 at 6:47 AM, Jens Nielsen <jenshnielsen@…287…> wrote:

Thomas Robitailles pytest image comparison plugin might also be of interest
https://github.com/astrofrog/pytest-mpl

Jens

tor. 30. jul. 2015 kl. 14.43 skrev Thomas Caswell <tcaswell@…287…>:

Paul Hobson expressed interest in making it easier to use the image comparison tests out side of the mpl test suite

Tom

On Thu, Jul 30, 2015, 9:28 AM Fabien <fabien.maussion@…287…> wrote:

Hi all,

is it possible to use the @image_comparison decorator for tests

generated within a unittest.TestCase class?

With my attempts so far the decorator was indeed instanicated at run

time but the test was not called, i.e. the test would allways pass…

Running the test with decorator from outside the class works fine.

Any idea? Thanks,

Fabien



Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

https://lists.sourceforge.net/lists/listinfo/matplotlib-users



Matplotlib-users mailing list

Matplotlib-users@lists.sourceforge.net

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Thank you all for your replies. It's not an urgent problem:

1. Jens gave us a link to an existing third party lib, althought it's not clear to me how it will work without pytest (i.e. with standard unittest).

2. My workaround is simply to use top level test functions as you suggest, and the rest works just fine.

It's already awesome enough to be able to test my plots in such an easy way!!!

Thanks a lot,

Fabien

···

On 07/30/2015 04:29 PM, Paul Hobson wrote:

Fabien,

The @image_comparison operator is still somehwat of a black box for me.
But I can confirm your observation that it only works on top-level test
functions, not within a class.

It's on my long, and slowly shifting backlog of things to try to improve.
-paul

On Thu, Jul 30, 2015 at 6:47 AM, Jens Nielsen > <jenshnielsen@…287… > <mailto:jenshnielsen@…287…>> wrote:

    Thomas Robitailles pytest image comparison plugin might also be of
    interest
    https://github.com/astrofrog/pytest-mpl

    Jens

    tor. 30. jul. 2015 kl. 14.43 skrev Thomas Caswell
    <tcaswell@…287…
    <mailto:tcaswell@…287…>>:

        Paul Hobson expressed interest in making it easier to use the
        image comparison tests out side of the mpl test suite

        Tom

        On Thu, Jul 30, 2015, 9:28 AM Fabien > <fabien.maussion@…287… > <mailto:fabien.maussion@…287…>> wrote:

            Hi all,

            is it possible to use the @image_comparison decorator for tests
            generated within a unittest.TestCase class?

            With my attempts so far the decorator was indeed
            instanicated at run
            time but the test was not called, i.e. the test would
            allways pass...
            Running the test with decorator from outside the class works
            fine.

            Any idea? Thanks,

            Fabien

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