testing - How can the code coverage data from Flutter tests be displayed?

Question

I'm working on a Flutter app using Android Studio as my IDE.
I'm attempting to write tests and check the code coverage but I can't work out how to view the data in the IDE or any other application.
By running flutter test --coverage
A coverage report seems to be generated into a file /coverage/Icov.info
That file looks something like this:

SF:libdataCustomer.g.dart
DA:9,2
DA:10,2
DA:11,2
DA:12,2
DA:13,2
DA:20,0
DA:21,0
DA:22,0
DA:23,0
DA:24,0
....

Looking at the file it seems to have a list of my project files with line by line coverage data. Is there a way to view this information in Android Studio?

question from:https://stackoverflow.com/questions/50789578/how-can-the-code-coverage-data-from-flutter-tests-be-displayed

Answer 1

You can also install lcov and convert the lcov.info file to HTML pages and then see the result in the browser with sorting option

Installing in Ubuntu:

sudo apt-get update -qq -y
sudo apt-get install lcov -y

Installing in Mac:

brew install lcov

Run tests, generate coverage files and convert to HTML

flutter test --coverage
genhtml coverage/lcov.info -o coverage/html

Note: This way you can add it to circleci artifacts and coveralls as well