Enable tests on Android (#248)

Author: brianquinlan

.github/workflows/io_file.yml

@@ -96,6 +96,33 @@ jobs:
       - name: 🪑 Run Write Benchmarks
         run: dart --enable-experiment=native-assets run benchmarks/write_as_bytes.dart
 
+  android-vm-test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    defaults:
+      run:
+        working-directory: pkgs/io_file/mobile_test
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+      - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
+        with:
+          channel: master
+      - name: Enable KVM group perms
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+      - name: Run tests
+        uses: reactivecircus/android-emulator-runner@1dcd0090116d15e7c562f8db72807de5e036a4ed
+        with:
+          api-level: 21
+          disable-animations: true
+          arch: x86_64
+          target: default
+          script: 'cd pkgs/io_file/mobile_test &&
+            flutter pub get && 
+            flutter test integration_test --reporter=failures-only --test-randomize-ordering-seed=random'
+
   ios-vm-test:
     runs-on: macos-latest
     defaults:

pkgs/io_file/README.md

@@ -12,26 +12,26 @@ See
 | :---                  |  :---:  | :---: | :---: | :---: | :----:  | :--------: | :----------: | 
 |  canonicalize path    |         |       |       |       |         |            |              |
 |  copy file            |         |       |       |       |         |            |              |
-|  create directory     |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  create directory     |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  create hard link     |         |       |       |       |        |            |              |
 |  create symbolic link |         |       |       |       |        |            |              |
-|  create tmp directory |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  create tmp directory |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  create tmp file      |         |       |       |       |        |            |              |
-|  delete directory     |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  delete directory     |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  delete file          |         |       |       |                |            |              |
-|  delete tree          |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  delete tree          |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  enum dir contents    |         |       |       |       |        |            |              |
 |  exists               |         |       |              |         |            |              |
-|  get metadata (stat)  |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
-|  identity (same file) |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  get metadata (stat)  |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  identity (same file) |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  open                 |         |       |              |         |            |              |
-|  read file (bytes)    |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  read file (bytes)    |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  read file (lines)    |         |       |       |       |        |            |              |
 |  read file (string)   |         |       |       |       |        |            |              |
-|  rename               |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  rename               |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 |  set permissions      |         |       |       |      |         |            |              |
-|  write file (bytes)   |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
-|  write file (string)  |         |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  write file (bytes)   |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
+|  write file (string)  |    ✓    |   ✓   |   ✓   |   ✓   |    ✓    |            |              |
 
 ### File