Grant iOS permissions to Flutter Driver for integration test

Issue

Using the Flutter integration_test package, I’m having trouble with a test that keeps failing due to an iOS permissions request that is inaccessible from the testing environment.

I tried applesimutils from github.com/wix/AppleSimulatorUtils but when attempting to set the permissions before flutter drive, the application’s bundle identifier isn’t yet registered:

Got error:
An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=2):
The operation couldn’t be completed. No such file or directory
No such file or directory

Maybe this could be avoided by not creating a fresh Simulator instance every time, but I got past this by running flutter drive ... & sleep 10 before the applesimutils --setPermissions command to allow the application to start first, but that still gives me:

══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞═════════════════
The following LocationError object was thrown running a test:
  [LocationError code: 0, message: null]

When the exception was thrown, this was the stack:
#2   BackgroundGeolocation.getCurrentPosition.<anonymous closure>
  (package:flutter_background_geolocation/models/background_geolocation.dart:497:17)

...

Solution

After getting a bit more familiar with xcrun simctl I noticed that it can grant permissions before the application starts, as long as device has booted. applesimutils not required!

My working solution in the form of a shell script looks like this:

# Simulator setup
xcrun simctl create iOS14Simulator
xcrun simctl boot iOS14Simulator
xcrun simctl privacy iOS14Simulator grant location-always <YOUR_BUNDLE_ID>

# Launch integration test
flutter drive \
  --driver=test_driver/integration_test_driver.dart \
  --target=integration_test/app_test.dart

# Simulator teardown
xcrun simctl delete iOS14Simulator

Answered By – Jonah M

Answer Checked By – Willingham (FlutterFixes Volunteer)