No Coverage Generated

[MelbourneDeveloper]

I have a simple shelf server app. I have six tests. They run correctly, but the tool doesn't generate any code coverage.

[✓] Flutter (Channel stable, 3.10.1, on macOS 13.3.1 22E772610a darwin-arm64, locale en-AU) [✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1) [✓] Xcode - develop for iOS and macOS (Xcode 14.3) [✓] Chrome - develop for the web [✓] Android Studio (version 2021.3) [✓] VS Code (version 1.78.2) [✓] Connected device (2 available) [✓] Network resources

Package version: 1.6.3

I installed with:

dart pub global activate coverage

I run this command:

dart pub global run coverage:test_with_coverage

This is the terminal output

coverage.json

{"type":"CodeCoverage","coverage":[]}

lcov.info is blank.