CI: split tests-examples (#990)

* CI: split tests-examples

* tests without template

* comment depends

* CircleCI typo

* add doctest

* update test req.

* CI tests

* setup macOS

* longer train

* lover pred acc

* fix model

* rename default model

* lower tests acc

* typo

* imports

* fix test optimizer

* update calls

* fix Win

* lower Drone image

* fix call

* pytorch image

* fix test

* add dev image

* add dev image

* update image

* drone volume

* lint

* update test notes

* rename tests/models >> tests/base

* group models

* conftest

* optim imports

* typos

* fix import

* fix tests

* install AMP

* tests

* fix import

.github/workflows/ci-testing.yml

@@ -23,7 +23,7 @@ jobs:
         python-version: [3.6, 3.7]
         requires: ['minimal', 'latest']
 
-    # https://stackoverflow.com/a/59076067/4521646
+    # Timeout: https://stackoverflow.com/a/59076067/4521646
     timeout-minutes: 20
     steps:
     - uses: actions/checkout@v2
@@ -32,6 +32,12 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
+    # Github Actions: Run step on specific OS: https://stackoverflow.com/a/57948488/4521646
+    - name: Setup macOS
+      if: runner.os == 'macOS'
+      run: |
+        brew install libomp  # https://github.com/pytorch/pytorch/issues/20030
+
     - name: Set min. dependencies
       if: matrix.requires == 'minimal'
       run: |
@@ -71,7 +77,7 @@ jobs:
       run: |
         # tox --sitepackages
         # flake8 .
-        coverage run --source pytorch_lightning -m py.test pytorch_lightning tests pl_examples -v --doctest-modules --junitxml=junit/test-results-${{ runner.os }}-${{ matrix.python-version }}.xml
+        coverage run --source pytorch_lightning -m py.test pytorch_lightning tests -v --doctest-modules --junitxml=junit/test-results-${{ runner.os }}-${{ matrix.python-version }}.xml
         coverage report
 
     - name: Upload pytest test results