Split tests into scheduled and triggered, to avoid disabling PR tests.

Github disables workflows with a cron schedule if the repo goes too long
without any changes. It appears to disable all triggers, not just the
schedule trigger. As a result, PRs never get tested and sit there in limbo
forever. This is a) a test to see if that is really what is causing our
PR tests to never run, and b) a fix for the issue.

The fix is to split testing into two separate actions, one for scheduled
tests and one for all other tests. Both call the run-tests workflow.

.github/workflows/main_tests.yml → .github/workflows/run-tests.yml

@@ -1,19 +1,7 @@
-name: GitHub CI
+name: Run Tests
 
 on:
-    # Trigger the workflow on push or pull request,
-    # but only for the main branch
-    push:
-        branches:
-            - main
-    pull_request:
-        branches:
-            - main
-    # nightly tests at 8:00 UTC
-    schedule:
-        - cron:  '0 8 * * *'
-    workflow_dispatch:
-         types: run-test
+    workflow_call:
 
 defaults:
     run:
@@ -91,3 +79,4 @@ jobs:
           - name: Run Prescient Simulator Tests
             run: |
               pytest -v prescient/simulator/tests/test_simulator.py
+

.github/workflows/test-changes.yml

@@ -0,0 +1,18 @@
+name: Test Changes
+
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the main branch
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  # Allow it to be manually triggered as well
+  workflow_dispatch:
+
+jobs:
+  call-run-tests:
+    uses: ./.github/workflows/run-tests.yml
+

.github/workflows/weekly-tests.yml

@@ -0,0 +1,10 @@
+name: Weekly Tests
+
+on:
+  schedule:
+    - cron: 58 7 * * 0
+
+jobs:
+  call-run-tests:
+    uses: ./.github/workflows/run-tests.yml
+