pytest: package conftest

closes jupyter-server#563

* Add `jupyter_server` to the default pytest args to allow running
  `pytest` with no arguments.
* Import the `jupyter_server.conftest` in the examples to inherit the
  plugin.

.github/workflows/python-linux.yml

@@ -79,7 +79,7 @@ jobs:
           cd examples/simple && pip install -e .
       - name: Run the tests for the examples
         run: |
-          pytest examples/simple/tests/test_handlers.py --confcutdir=$PWD
+          pytest examples/simple
       - name: Coverage
         if: ${{ matrix.python-version != 'pypy3' }}
         run: |

.github/workflows/python-macos.yml

@@ -55,7 +55,7 @@ jobs:
           cd examples/simple && pip install -e .
       - name: Run the tests for the examples
         run: |
-          pytest examples/simple/tests/test_handlers.py --confcutdir=$PWD
+          pytest examples/simple
       - name: Coverage
         if: ${{ matrix.python-version != 'pypy3' }}
         run: |

.github/workflows/python-windows.yml

@@ -55,4 +55,4 @@ jobs:
           cd examples/simple && pip install -e .
       - name: Run the tests for the examples
         run: |
-          pytest examples/simple/tests/test_handlers.py --confcutdir=$PWD
+          pytest examples/simple

CONTRIBUTING.rst

@@ -85,12 +85,12 @@ Running Tests
 Install dependencies::
 
     pip install -e .[test]
-    pip install -e examples/simple
+    pip install -e examples/simple  # to test the examples
 
 To run the Python tests, use::
 
     pytest
-    pytest examples/simple --confcutdir=$PWD
+    pytest examples/simple  # to test the examples
 
 Building the Docs
 =================

examples/simple/conftest.py

@@ -0,0 +1 @@
+from jupyter_server.conftest import *

pyproject.toml

@@ -9,7 +9,7 @@ factory = "jupyter_packaging.npm_builder"
 ignore = ["tbump.toml", ".*", "*.yml", "package-lock.json", "bootstrap*", "conftest.py"]
 
 [tool.pytest.ini_options]
-addopts = "--doctest-modules"
+addopts = "--doctest-modules jupyter_server"
 testpaths = [
     "jupyter_server"
 ]