Code coverage report not working properly

I've been trying to generate a code coverage report using ``flutter test --coverage`` to generate the ``lcov.info`` file.
The % of lines tested are wrong for me, looks like the ```testController``` tests are not being counted towards the tests.
Anyone else had this problem?

Start by reproducing the report with `flutter test --coverage` and inspect the generated `lcov.info`. Compare its results with the `testController` tests and determine whether the reported coverage excludes them. Done means the coverage output accurately reflects those tests, with a regression test if the relevant test entry point can be identified.

Written by the indexing model from the issue text.