Coverage provides coverage data collection, manipulation, and formatting for Dart.
collect_coverage collects coverage JSON from the Dart VM Observatory.
format_coverage formats JSON coverage data into either
LCOV or pretty-printed format.
pub global activate coverage
Consider adding the pub global run executables directory to your path.
See Running a script from your PATH
for more details.
dart --pause-isolates-on-exit --enable-vm-service=NNNN script.dart
pub global run coverage:collect_coverage --port=NNNN -o coverage.json --resume-isolates
or if the pub global run executables are on your PATH,
collect_coverage --port=NNNN -o coverage.json --resume-isolates
If collect_coverage is invoked before the script from which coverage is to be
collected, it will wait until it detects a VM observatory port to which it can
connect. An optional --connect-timeout may be specified (in seconds). The
--wait-paused flag may be enabled, causing collect_coverage to wait until
all isolates are paused before collecting coverage.
dartium --remote-debugging-port=NNNN
# execute code in Dartium
pub global run coverage:collect_coverage --port=NNNN -o coverage.json
or if the pub global run executables are on your PATH,
collect_coverage --port=NNNN -o coverage.json
As noted above, collect_coverage may be invoked before Dartium, in which case
it will wait until it detects a Dartium remote debugging port, up to the
(optional) timeout. Note that coverage cannot be run against a Dartium instance
launched from Dart Editor, since the editor makes use of Dartium's remote
debugging port.
pub global run coverage:format_coverage --packages=app_package/.packages -i coverage.json
or if the pub global run exectuables are on your PATH,
format_coverage --packages=app_package/.packages -i coverage.json
where app_package is the path to the package whose coverage is being
collected. If --sdk-root is set, Dart SDK coverage will also be output.