Improve workflows

.github/workflows/workflow.yml

@@ -1,5 +1,13 @@
 name: Main workflow
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
 jobs:
   run:
     name: Run
@@ -24,3 +32,59 @@ jobs:
 
     - name: npm test
       run: npm test
+
+    - name: Run with setup-python 2.7
+      uses: ./
+      with:
+        python-version: 2.7
+    - name: Verify 2.7
+      run: python __tests__/verify-python.py 2.7
+
+    - name: Run with setup-python 3.5
+      uses: ./
+      with:
+        python-version: 3.5
+    - name: Verify 3.5
+      run: python __tests__/verify-python.py 3.5
+
+    - name: Run with setup-python 3.6
+      uses: ./
+      with:
+        python-version: 3.6
+    - name: Verify 3.6
+      run: python __tests__/verify-python.py 3.6
+
+    - name: Run with setup-python 3.7
+      uses: ./
+      with:
+        python-version: 3.7
+    - name: Verify 3.7
+      run: python __tests__/verify-python.py 3.7
+
+    - name: Run with setup-python 3.8
+      uses: ./
+      with:
+        python-version: 3.8
+    - name: Verify 3.8
+      run: python __tests__/verify-python.py 3.8
+    
+    - name: Run with setup-python 3.7.4
+      uses: ./
+      with:
+        python-version: 3.7.4
+    - name: Verify 3.7.4
+      run: python __tests__/verify-python.py 3.7.4
+
+    - name: Run with setup-python 3.6.2
+      uses: ./
+      with:
+        python-version: 3.6.2
+    - name: Verify 3.6.2
+      run: python __tests__/verify-python.py 3.6.2
+
+    - name: Run with setup-python 3.8.1
+      uses: ./
+      with:
+        python-version: 3.8.1
+    - name: Verify 3.8.1
+      run: python __tests__/verify-python.py 3.8.1