Re: [openlayers-dev] Newbie contributor questions

[OpenLayers Dev on behalf of Tim Schaub]

Hi Pete,

Thanks for the contribution.  You've caught us in transition, and the
development setup isn't as nice as it should be.  We're working toward the
5.0 release, transitioning everything to ES modules, and reworking the
development tools.  During this period, the docs are out of date and there
are some things that aren't working as they should.

But, to answer your questions:

1. To run a single test, append `only` to a `describe` or `it` block.  This
requires editing one of the test files.  See
https://github.com/openlayers/openlayers/commit/611eeb19f044d0f0a19d9d1e58a40326cb2f597a
and
the details below.
2. You can insert a `debugger` statement anywhere in the test or the
library code.  See
https://github.com/openlayers/openlayers/commit/21cbc9ec00074b34be315b066fc83ab7e3556caf
and
the details below.
3. In the future, the Makefile will be gone.  See above about the
transition to 5.0.  All development tasks will be npm scripts.

To debug the tests, run `npm run karma`, load
http://localhost:9876/debug.html, and open the developer tools.  This is a
pretty rough experience currently - things should improve as we approach
the 5.0 release.

Tim




On Fri, Jan 12, 2018 at 2:55 PM Peter Schmitt via OpenLayers Dev <
openlayers-dev+apn2wqdftrt82kptxpzygtygzy6w8iu-gob9zv1pplfzro...@googlegroups.com>
wrote:

> Just submitted my first OpenLayers pull request and came up with a couple
> of questions:
>
>1. I'm a node/npm/karma newbie.  How do I run a single test? I'm used
>to Ruby/rspec where I can do something like:
>env SPEC=./spec/models/user_spec.rb rake spec
>to run all tests in a given file, or to run the test at line 45 of the
>file:
>env SPEC="./spec/models/user_spec.rb#45" rake spec
>2. From the shell, is there a way to pull up a debugger or
>`console.log(...)` from a test?  In ruby, I might add `require 'byebug';
>byebug` or in Python I might `import ipdb; ipdb.set_trace()` to pull up a
>REPL at a particular line in my test.
>3. DEVELOPING.md talks of a Make-based build system, but most of the
>targets are missing from the Makefile.  Looks like some commands can be run
>with npm instead (`npm test` instead of `make test`).  I would
>update/submit a pull request, but I'm not sure how to find the commands
>that work.
>
> Cheers,
> Pete
>
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[openlayers-dev] Newbie contributor questions

[Peter Schmitt via OpenLayers Dev]

Just submitted my first OpenLayers pull request and came up with a couple 
of questions:

   1. I'm a node/npm/karma newbie.  How do I run a single test? I'm used to 
   Ruby/rspec where I can do something like:
   env SPEC=./spec/models/user_spec.rb rake spec
   to run all tests in a given file, or to run the test at line 45 of the 
   file:
   env SPEC="./spec/models/user_spec.rb#45" rake spec
   2. From the shell, is there a way to pull up a debugger or 
   `console.log(...)` from a test?  In ruby, I might add `require 'byebug'; 
   byebug` or in Python I might `import ipdb; ipdb.set_trace()` to pull up a 
   REPL at a particular line in my test.
   3. DEVELOPING.md talks of a Make-based build system, but most of the 
   targets are missing from the Makefile.  Looks like some commands can be run 
   with npm instead (`npm test` instead of `make test`).  I would 
   update/submit a pull request, but I'm not sure how to find the commands 
   that work.

Cheers,
Pete

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