Add test workflox and tox (#74)

* add tests

* fix pipeline

* Update .github/workflows/run-test.yaml

Co-authored-by: Ash Berlin-Taylor <ash_github@firemirror.com>

Co-authored-by: Ash Berlin-Taylor <ash_github@firemirror.com>

Author: CaselIT

.github/workflows/run-test.yaml

@@ -0,0 +1,48 @@
+name: Run tests
+
+on:
+  push:
+  pull_request:
+
+env:
+  # global env to all steps
+  TOX_WORKERS: -n2
+
+jobs:
+  run-test:
+    name: ${{ matrix.python-version }}-${{ matrix.sqlalchemy }}
+    runs-on: "ubuntu-latest"
+    strategy:
+      matrix:
+        python-version:
+          - "3.9"
+        sqlalchemy:
+          - sqla_release
+          - sqla_master
+
+      fail-fast: false
+
+    # steps to run in each job. Some are github actions, others run shell commands
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Set up python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+          architecture: ${{ matrix.architecture }}
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade tox setuptools
+          pip list
+
+      - name: Set env
+        run: |
+          echo "SQLA_REF=$(python .github/workflows/scripts/find_version.py ${{ matrix.sqlalchemy }})" >> $GITHUB_ENV
+
+      - name: Run tests
+        run: |
+          tox

.github/workflows/scripts/find_version.py

@@ -0,0 +1,19 @@
+import json
+import sys
+from urllib import request
+
+
+def go(argv):
+    if "sqla_release" in argv:
+        result = request.urlopen(
+            "https://pypi.org/pypi/SQLAlchemy/json", timeout=10
+        )
+        assert result.status == 200
+        parsed = json.loads(result.read())
+        version = parsed["info"]["version"]
+        print(f"rel_{version}".replace(".", "_"))
+    else:
+        print("master")
+
+if __name__ == "__main__":
+    go(sys.argv)

.gitignore

@@ -7,3 +7,4 @@ dist/
 *.egg-info
 
 
+sqla

tox.ini

@@ -0,0 +1,32 @@
+[tox]
+
+; envlist = py
+
+SQLA_REPO = {env:SQLA_REPO:https://github.com/sqlalchemy/sqlalchemy.git}
+SQLA_REF = {env:SQLA_REF:master}
+
+[testenv]
+
+allowlist_externals=
+                git
+
+setenv=
+    WORKERS={env:TOX_WORKERS:-n2}
+
+deps=
+    pytest>=6.2
+    pytest-xdist
+    greenlet != 0.4.17
+    importlib_metadata; python_version < '3.8'
+    mypy
+    patch==1.*
+
+changedir = sqla
+
+commands_pre=
+    python -c 'import shutil; shutil.rmtree(".", ignore_errors=True)'
+    git clone --depth 1 {[tox]SQLA_REPO} --branch {[tox]SQLA_REF} .
+
+
+commands =
+    pytest {env:WORKERS} -v test/ext/mypy/test_mypy_plugin_py3k.py {posargs}