Dart test coverage
SonarQube Server supports the reporting of test coverage information as part of the analysis of your Dart project.
However, SonarQube Server does not produce the coverage report itself. Instead, you must set up a coverage tool to produce an LCOV report as part of your build process configure your analysis to tell the SonarScanner where the report is located so that it can pick it up and send it to SonarQube Server, where it will be displayed on your project dashboard along with the other analysis metrics.
Adjust your setup
To enable coverage for Dart, you need to:
- adjust your build process so that the coverage tool generates the report(s) just after your unit as part of the clean build required to run analysis
- make sure that the coverage tool writes its report file to a defined path in the build environment
- configure the scanning step of your build so that the scanner picks up the report file from that defined path
Adding coverage to your build process
For Flutter or Dart projects, SonarQube Server supports LCOV reports. The location of the coverage report produced by the tool must be set in the associated analysis parameter sonar.dart.lcov.reportPaths
.
Multiple options are available to generate coverage reports, depending on the type of project and the tools used to run test. For example:
- the Flutter command-line tool, when dealing with Flutter projects
- the Dart coverage package, when dealing with generic Dart projects
To produce data for branch coverage when using the Dart coverage package, you can provide the --branch-coverage
parameter to the coverage:test_with_coverage
target. You'll find more information and options in the Dart coverage package documentation.
Adding the coverage analysis parameter
The next step is to add sonar.dart.lcov.reportPaths
to your analysis parameters. This parameter must be set to the path of the report file produced by your coverage tool. In this example, that path is set to the default. It is set in the sonar-project.properties
file, located in the project root:
Coverage parameters can be set in multiple places
As with other analysis parameters, sonar.dart.lcov.reportPaths
can be set in multiple places:
- In the
sonar-project.properties
file, as mentioned above. - On the command line of the scanner invocation using the
-D
or--define
switch, for example,sonar-scanner -Dsonar.dart.lcov.reportPaths=coverage/lcov.info
- In the SonarQube Server interface under Your Project > Project Settings > General Settings > Languages > Dart > Tests and Coverage for project-level settings, and Administration > Configuration > General Settings > Languages > Dart > Tests and Coverage for global settings (applying to all projects).
Related pages
Was this page helpful?