Split CI testing based on flutter channels (#651)

.github/workflows/main.yml

@@ -9,16 +9,19 @@ on:
   schedule:
     - cron: '0 0 * * *' # Every day at midnight
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   flutter-tests:
-    runs-on: ubuntu-latest
+    name: Test Flutter ${{ matrix.flutter_version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - flutter_version: dev
-          - flutter_version: beta
-          - flutter_version: stable
+        flutter_version: [dev, beta, stable]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1
@@ -27,11 +30,9 @@ jobs:
       - uses: subosito/flutter-action@v1
         with:
           channel: ${{ matrix.flutter_version }}
-      - run: ./tool/flutter_ci_script.sh
+      - run: ./tool/flutter_ci_script_${{ matrix.flutter_version }}.sh
   android-build:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1
@@ -43,8 +44,6 @@ jobs:
       - run: ./tool/android_ci_script.sh
   ios-build:
     runs-on: macos-latest
-    strategy:
-      fail-fast: false
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1