Run CI without mix.lock

Author: angelikatyborska

.github/workflows/test.yml

@@ -5,6 +5,8 @@ on:
     branches: [ main ]
   pull_request:
   workflow_dispatch:
+  schedule:
+    - cron: '0 4 * * 2,6'
 
 jobs:
   test:
@@ -13,22 +15,23 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        include:
+        versions:
           - elixir: '1.13.2'
             otp: '24.1'
-            current_version: false
+            with_linting: false
           - elixir: '1.14.0'
             otp: '25.0'
-            current_version: false
+            with_linting: false
           - elixir: '1.15.0'
             otp: '26.0'
-            current_version: true
+            with_linting: true
           - elixir: '1.16.0'
             otp: '26.2'
-            current_version: true
+            with_linting: true
           - elixir: '1.17.0'
             otp: '27.0'
-            current_version: true
+            with_linting: true
+        mix_lock: ['with_mix_lock', 'without_mix_lock']
 
     steps:
       - name: Checkout code
@@ -37,8 +40,8 @@ jobs:
       - name: Use Elixir
         uses: erlef/setup-beam@a34c98fd51e370b4d4981854aba1eb817ce4e483
         with:
-          otp-version: ${{matrix.otp}}
-          elixir-version: ${{matrix.elixir}}
+          otp-version: ${{matrix.versions.otp}}
+          elixir-version: ${{matrix.versions.elixir}}
 
       - name: Set cache key
         id: set_cache_key
@@ -57,8 +60,12 @@ jobs:
           path: deps
           key: mix-${{ steps.set_cache_key.outputs.cache_key }}-v1
 
+      - name: Unlock Mix Dependencies
+        if: matrix.mix_lock == 'without_mix_lock'
+        run: mix deps.unlock --all
+
       - name: Install Mix Dependencies
-        if: steps.mix-cache.outputs.cache-hit != 'true'
+        if: steps.mix-cache.outputs.cache-hit != 'true' || matrix.mix_lock == 'without_mix_lock'
         run: mix deps.get
 
       - name: Build Project
@@ -97,11 +104,11 @@ jobs:
 
       - name: Run Dialyzer
         run: mix dialyzer
-        if: ${{ matrix.current_version }}
+        if: ${{ matrix.versions.with_linting }}
 
       - name: Run format check
         run: mix format --check-formatted
-        if: ${{ matrix.current_version }}
+        if: ${{ matrix.versions.with_linting }}
 
   all_tests_passing:
     if: ${{ always() }}