Cache mocks

.github/workflows/flutter-prep.yaml

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 name: Flutter SDK prep
-
 on:
   workflow_call:
     inputs:
@@ -15,6 +14,9 @@ on:
       latest_flutter_candidate:
         description: "The latest Flutter candidate version."
         value: ${{ jobs.reusable-flutter-prep.outputs.latest_flutter_candidate }}
+      mock_cache_key:
+        description: "The key used to cache the mocks"
+        value: ${{ steps.determine-mocks-cache-id.outputs.mocks_cache_id}}
 
 jobs:
   reusable-flutter-prep:
@@ -71,3 +73,30 @@ jobs:
           ./flutter-sdk/bin/flutter config --no-analytics
           ./flutter-sdk/bin/flutter doctor
           ./flutter-sdk/bin/cache/dart-sdk/bin/dart --disable-analytics
+      - name: Determine Mocks Cache Id
+        id: determine-mocks-cache-id
+        run: echo "mocks_cache_id=$MOCKS_CACHE_ID" >> "GITHUB_OUTPUT"
+        env:
+          MOCKS_CACHE_ID: mocks-${{ runner.os }}-${{ steps.flutter-candidate.outputs.FLUTTER_CANDIDATE }}-${{env.GITHUB_SHA}}
+      - name: Generate Mocks
+        run: |
+          export PATH="$PATH":`pwd`/flutter-sdk/bin/cache/dart-sdk/bin/
+          export PATH="$PATH":`pwd`/flutter-sdk/bin/
+
+          pushd tool
+          flutter pub get
+          popd
+
+          echo $PATH
+          # Fetch dependencies
+          ./tool/bin/devtools_tool pub-get --only-main
+
+
+          # Generate code.
+          ./tool/bin/devtools_tool generate-code
+      - name: Cache Mocks
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84
+        with:
+          path: |
+            ./packages/**mocks**
+          key: ${{env.MOCK_CACHE_KEY}}