Stuck on windows developing Flutter apps and no way to get a html graphical report on code coverage? Let me fix that with a damn easy way to get the lcov set of perl scripts installed on windows and get your code coverage html report in seconds.
You will be using the MS Windows Chocolatey package manager to install the windows port of lcov, install page at:
lcov (Install) 1.15.0
Chocolatey is software management automation for Windows that wraps installers, executables, zips, and scripts into…
In your terminal you will type this to install it:
choco install lcov
That will install two things, the strawberry perl distribution and the lcov set of perl scripts. Than set your GENTHML variable to where the genthml perl script of lcov is at which is typically this location:
And, that is it and we are ready to generate some html reports!
Code Coverage HTML Reports
You already did this command in your terminal:
flutter test --coverage
and that gave you a lcov.info file in the coverage folder. Now it’s time to generate the html report, in your terminal type:
perl %GENHTML% -o coverage\html coverage\lcov.info
and that will produce this output:
and the html reports look like:
and the main.dart file itself with coverage marked:
That is how to get locv html reports the easy way on windows for flutter app development. But, what about automation of the project workflow?
That is why these mini-articles are leading to in my next big article.
Resources specific to the article:
windows port of lcov@chocolatey https://chocolatey.org/packages/lcov
General Flutter and Dart resources:
Flutter Community Resources https://flutter.dev/community
Flutter SDK https://flutter.dev/docs/get-started/install
Android Studio IDE https://developer.android.com/studio
MS’s Visual Studio Code https://code.visualstudio.com/
Flutter Docs https://flutter.dev/docs
Dart Docs https://dart.dev/guides
Google Firebase Mobile Device TestLab https://firebase.google.com/docs/test-lab
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About Fred Grott
I’m the crazy SOB who as a former android mobile developer is starting to write about flutter mobile app development, design, and life(see Eff COVID and GOP https://fredgrott.medium.com/eff-covid-and-the-gop-e912db0548b8). Will I reach the pivotal One Million Medium monthly viewers mark? Sit-back and watch it happen. Find me on these social platforms:
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