adding widget-tests to drone

.drone.yml

@@ -54,6 +54,18 @@ steps:
       - mkdir deploy/android
       - cp build/app/outputs/bundle/release/app-release.aab deploy/android
 
+  - name: widget-tests
+    image: cirrusci/flutter:dev
+    volumes:
+      - name: deps
+        path: /root/.pub-cache
+    commands:
+      - flutter config --enable-linux-desktop
+      - flutter test --coverage
+      - apt-get update
+      - apt-get install -y --no-install-recommends lcov
+      - genhtml coverage/lcov.info -o coverage/html
+
   # Todo: gonna need more work on container
   #   https://flutter.dev/desktop
   #   requirements: Visual Studio 2019 (not to be confused with Visual Studio Code) with the “Desktop development with C++” workload installed, including all of its default components
@@ -81,6 +93,8 @@ steps:
       - chmod 400 ~/id_rsa
       - export DIR=flwtch-`cat VERSION`-`cat BUILDDATE`
       - mv deploy $DIR
+      - cp -r coverage/html $DIR/coverage-tests
+      - cp -r test/failures $DIR/test-failures
       - cd $DIR
       - find . -type f -exec sha256sum {} \; > ./../sha256s.txt
       - mv ./../sha256s.txt .