GH-42: Integrate CircleCI for running windows tests (GH-43)

* Create a config file to setup CircleCI
* Setup CircleCi workflows to run tests on Windows
* Use GitHub workflows only for Ubuntu and MacOS

Author: ArtyomVancyan

.circleci/config.yml

@@ -0,0 +1,26 @@
+version: 2.1
+
+orbs:
+  win: circleci/windows@5.0
+
+jobs:
+  test:
+    executor: win/default
+    steps:
+      - checkout
+
+      - run:
+          name: Install Dependencies
+          command: |
+            pip install --upgrade pip
+            python -m pip install -e .
+            python -m pip install tox
+
+      - run:
+          name: Run tests
+          command: tox
+
+workflows:
+  windows-tests:
+    jobs:
+      - test

.github/workflows/tests.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-latest, windows-latest, macOS-latest ]
+        os: [ ubuntu-latest, macOS-latest ]
         python-version: [ "3.7", "3.8", "3.9" ]
 
     steps:
@@ -19,7 +19,8 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
+          pip install --upgrade pip
+          python -m pip install -e .
           pip install tox tox-gh-actions
       - name: Test with tox
         run: tox

tox.ini

@@ -6,12 +6,6 @@ envlist =
     python3.9
 isolated_build = true
 
-[gh-actions]
-python =
-    3.7: python3.7
-    3.8: python3.8
-    3.9: python3.9
-
 [testenv]
 setenv =
     PYTHONPATH = {toxinidir}