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outdatedDart 1 only

Coverage data manipulation and formatting

Coverage #

Coverage provides coverage data collection, manipulation, and formatting for Dart.

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Tools #

collect_coverage.dart collects coverage JSON from the Dart VM Observatory. format_coverage.dart formats JSON coverage data into either LCOV or pretty-printed format.

Collecting coverage from the VM

dart --observe=NNNN script.dart
dart bin/collect_coverage.dart --port=NNNN -o coverage.json --resume-isolates

If collect_coverage.dart 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.dart to wait until all isolates are paused before collecting coverage.

Collecting coverage from Dartium

dartium --remote-debugging-port=NNNN
# execute code in Dartium
dart bin/collect_coverage.dart --port=NNNN -o coverage.json

As noted above, collect_coverage.dart 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.

Formatting coverage data

dart bin/format_coverage.dart --package-root=app_package_root -i coverage.json

where app_package_root is the package-root of the code whose coverage is being collected. If --sdk-root is set, Dart SDK coverage will also be output.

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Publisher

verified publishertools.dart.dev

Coverage data manipulation and formatting

Repository (GitHub)
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License

unknown (LICENSE)

Dependencies

args, http, logging, path

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