Add edge-testing action.

.github/workflows/test-edge.yml

@@ -0,0 +1,121 @@
+name: Test ❯ Edge
+# Runs tests against edge versions of Erlang/OTP and Elixir
+# to get ahead of incompatible changes.
+
+on:
+  # Allow running from GitHub UI.
+  workflow_dispatch: {}
+
+  # Run daily.
+  schedule:
+    - cron: 0 0 * * *
+
+env:
+  edge-elixir: "master"
+  edge-otp: "x"
+  MIX_ENV: test
+
+concurrency:
+  group: test-edge-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    name: Testing Edge
+    runs-on: ${{ vars.PREFERRED_OS }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Erlang & Elixir
+        id: beam-versions
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: ${{ env.edge-elixir }}
+          otp-version: ${{ env.edge-otp }}
+
+      - name: Unlock dependencies
+        run: mix deps.unlock --all
+
+      - name: Install mix dependencies
+        run: mix deps.get
+
+      - name: Compile mix dependencies
+        run: mix deps.compile
+
+      - name: Run test suite
+        run: mix test
+
+  types:
+    # Skip type checking for now
+    if: ${{ !always() }}
+    name: Typechecking Edge
+    runs-on: ${{ vars.PREFERRED_OS }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Erlang & Elixir
+        id: beam-versions
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: ${{ env.edge-elixir }}
+          otp-version: ${{ env.edge-otp }}
+
+      - name: Unlock dependencies
+        run: mix deps.unlock --all
+
+      - name: Install mix dependencies
+        run: mix deps.get
+
+      - name: Compile mix dependencies
+        run: mix deps.compile
+
+      - name: Run typecheck tasks
+        run: mix typecheck
+
+  lints:
+    name: Linting Edge
+    runs-on: ${{ vars.PREFERRED_OS }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Erlang & Elixir
+        id: beam-versions
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: ${{ env.edge-elixir }}
+          otp-version: ${{ env.edge-otp }}
+
+      - name: Unlock dependencies
+        run: mix deps.unlock --all
+
+      - name: Install mix dependencies
+        run: mix deps.get
+
+      - name: Compile mix dependencies
+        run: mix deps.compile
+
+      - name: Run linter tasks
+        run: mix lint
+        continue-on-error: true
+
+  results:
+    name: Test Edge Action Results
+    runs-on: ${{ vars.PREFERRED_OS }}
+
+    if: ${{ always() }}
+    needs:
+      - tests
+      - types
+      - lints
+
+    steps:
+      - name: Test Suite Succeeded
+        if: ${{ needs.tests.result == 'success' && needs.types.result == 'success' && needs.lints.result == 'success' }}
+        run: exit 0
+
+      - name: Test Suite Failed
+        if: ${{ needs.tests.result == 'failure' || needs.types.result == 'failure' || needs.lints.result == 'failure' }}
+        run: exit 1