[stubgenc] Move stubgenc CI test in separate workflow

Author: sizmailov

.github/workflows/test.yml

@@ -47,33 +47,3 @@ jobs:
       run: tox -e ${{ matrix.toxenv }} --notest
     - name: test
       run: tox -e ${{ matrix.toxenv }} --skip-pkg-install
-
-  stubgenc:
-    # Check stub file generation for a small pybind11 project
-    # (full text match is required to pass)
-    runs-on: ubuntu-latest
-    steps:
-
-    - uses: actions/checkout@v2
-
-    - name: initialize submodules
-      run: git submodule update --init
-
-    - name: Setup 🐍 3.8
-      uses: actions/setup-python@v2
-      with:
-        python-version: 3.8
-
-    - name: Prepare env
-      run: |
-        python -m pip install -r test-requirements.txt
-        python -m pip install .
-
-    - name: Run stubgen
-      run: |
-        rm -rf test-data/stubgen/python_example
-        stubgen -p python_example -o test-data/stubgen/
-
-    - name: Check output
-      run: |
-        git diff --exit-code test-data/stubgen/

.github/workflows/test_stubgenc.yml

@@ -0,0 +1,31 @@
+name: Test stubgenc on pybind11-mypy-demo
+
+on:
+  push:
+    branches: [master]
+    tags: ['*']
+  pull_request:
+    paths:
+    - 'mypy/stubgenc.py'
+    - 'mypy/stubdoc.py'
+    - 'test-data/stubgen/**'
+
+jobs:
+  stubgenc:
+    # Check stub file generation for a small pybind11 project
+    # (full text match is required to pass)
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: initialize submodules
+      run: git submodule update --init
+
+    - name: Setup 🐍 3.8
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+
+    - name: Test stubgenc
+      run: misc/test-stubgenc.sh

misc/test-stubgenc.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+# This script is expected to be run from root of the mypy repo
+
+# Install dependencies, demo project and mypy
+python -m pip install -r test-requirements.txt
+python -m pip install pybind11 numpy
+python -m pip install git+https://github.com/sizmailov/python_example.git@pybind11-mypy-demo
+python -m pip install .
+
+# Remove expected stubs and generate new inplace
+rm -rf test-data/stubgen/python_example
+stubgen -p python_example -o test-data/stubgen/
+
+# Compare generated stubs to expected ones
+git diff --exit-code test-data/stubgen/python_example

test-requirements.txt

@@ -15,7 +15,3 @@ py>=1.5.2
 virtualenv<20
 setuptools!=50
 importlib-metadata==0.20
-# stubgen compatibility with pybind
-pybind11
-numpy
-git+https://github.com/sizmailov/python_example.git@mypy-stubgen-test