Test workflow improvements

- Better triggers
- Common hashseed generation for test matrix

Author: moomoohk

.github/workflows/tests.yml

@@ -2,8 +2,15 @@ name: Run tests
 
 # Controls when the workflow will run
 on:
-  # Triggers the workflow on push or pull request events but only for the master branch
+  # Triggers the workflow on push or pull request events but only for important files
   push:
+    branches:
+      - master
+    paths:
+      - "dpath/"
+      - "**.py"
+      - "tox.ini"
+  pull_request:
     paths:
       - "dpath/"
       - "**.py"
@@ -14,11 +21,29 @@ on:
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
-  # This workflow contains a single job called "tests"
+  # Generate a common hashseed for all tests
+  generate-hashseed:
+    runs-on: ubuntu-latest
+
+    outputs:
+      hashseed: ${{ steps.generate.outputs.hashseed }}
+
+    steps:
+      - name: Generate Hashseed
+        id: generate
+        run: |
+          python -c "from random import randint;
+          hashseed = randint(0, 4294967295)
+          print(f'{hashseed=}')
+          print(f'::set-output name=hashseed::{hashseed}')"
+
+  # Tests job
   tests:
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
 
+    needs: generate-hashseed
+
     strategy:
       matrix:
         # Match versions specified in tox.ini
@@ -38,4 +63,4 @@ jobs:
     - name: Run tox with tox-gh-actions
       uses: ymyzk/run-tox-gh-actions@main
       with:
-        tox-args: -vv
+        tox-args: -vv --hashseed=${{ needs.generate-hashseed.outputs.hashseed }}