Briefly: Can anyone tell me how to know if the dart code has been invoked or how to mark it as hits and misses.
We can get test coverage by 'flutter test --coverage'. But this rely on test.dart file, I mean we have to write test.dart file for the file and function we care about. If we can collect the coverage info when dart is running, it will be easier for us to know which code lines has been invoked. And I think it will be friendly for developers.
I have searched dart-lang/sdk, only know that 'flutter test --coverage' gets reports by invokeRpcRaw('getSourceReport'...), but I have no idea how to get reports for dart runtime.
If runtime dose not work, can I do something when compile?
On Mac
brew install lcov
Or use ubuntu or windows alternatives for this
then
flutter test --coverage
genhtml coverage/icov.info -o coverage/html
open coverage/html
https://github.com/dart-lang/coverage may help you
flutter pub global activate coverage
flutter run (you can use -d to select device)
flutter pub global run coverage:collect_coverage --uri=http://... -o coverage.json --resume-isolates
flutter pub global run coverage:format_coverage --packages=./.packages --report-on lib --in coverage.json --out lcov.info --lcov
I have try this and finally get the lcov.info in runtime, good luck
Related
When I tried to run Flutter app on windows, it gives an error then says Exited Sigterm. or stmh like this.
the error says;
Re-run cmake with a different source directory
cmake files does not match...
etc.
The Steps that helped me to handle this error are;
open your terminal then write following commands
flutter clean
flutter pub get
flutter run
This will remove you build file and re-create it.
Your problem should have solved now.
I'm seeing that I can introduce a compilation error in my dart code but flutter build ios will still successfully run. If I flutter run -d [my-simulator] the compile error will immediately be presented in a red screen on the simulator but I can't currently easily do this in a CI type check.
Is there are cli command I can run to ensure that all of the dart code is free of compile errors?
You can run dart analyze or flutter analyze commands.
More info
I'm new to flutter, when I created a new project of flutter and run it, this appears :
Using hardware rendering with device AOSP on IA Emulator. If you notice graphics artifacts,
consider enabling software rendering with "--enable-software-rendering".
Launching lib\main.dart on AOSP on IA Emulator in debug mode...
Could not find a command named "-".
Usage: dart [<vm-flags>] <command|dart-file> [<arguments>]
Global options:
-h, --help Print this usage information.
-v, --verbose Show additional command output.
--version Print the Dart SDK version.
--enable-analytics Enable anonymous analytics.
--disable-analytics Disable anonymous analytics.
Available commands:
analyze Analyze the project's Dart code.
compile Compile Dart to various formats.
create Create a new project.
fix Apply automated fixes to Dart source code.
format Idiomatically format Dart source code.
migrate Perform a null safety migration on a project or package.
pub Work with packages.
run Run a Dart program.
test Run tests in this package.
Run "dart help <command>" for more information about a command.
See https://dart.dev/tools/dart-tool for detailed documentation.
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 510ms
Exception: Gradle task assembleDebug failed with exit code 64
I'm stuck with this problem, how to solve this?
I have solved this problem. I run this project in my D: directory while my flutter and android SDK was installed in C: directory. So, when I tried to create flutter project in C:, it worked. But, I still can't configure why this problem happened.
#Papskipapap may I ask, if running your project on D: also inculded some path name which contained a "-" (dash) in it? As a rule of thumb: Keep pathnames easy, i.e. without blanks or special characters other than "_" (underscore), many tools just can not handle those...
flutter build web will build my flutter app with obfuscation and minification.
I want my error stack to be readable though.
How should I modify the command?
Try:
flutter build web --profile --dart-define=Dart2jsOptimization=O0
See:
https://github.com/flutter/flutter/blob/720dff6a94bd054e82ec4bf84b5cb802bbc52ddd/packages/flutter_tools/lib/src/build_system/targets/web.dart#L238-L239
There's an issue on github for this feature, feel free to upvote ;)
https://github.com/flutter/flutter/issues/96283
This is a old post, but I found the answer.
If you build the app with this line:
flutter build web --profile --source-maps
Then when you print a stacktrace, you'll get something like this:
Exception: Hello
at Object.wrapException (js_helper.dart:1123:37)
at _MyHomePageState__incrementCounter_closure.call$0 (main.dart:64:7)
at _MyHomePageState.setState$1 (framework.dart:1114:28)
at _MyHomePageState._incrementCounter$0 (main.dart:57:5)
at tear_off.<anonymous> (js_helper.dart:2099:9)
at _InkResponseState.handleTap$0 (framework.dart:909:26)
at tear_off.<anonymous> (js_helper.dart:2099:9)
at TapGestureRecognizer.invokeCallback$1$3$debugReport (recognizer.dart:253:16)
at TapGestureRecognizer.invokeCallback$2 (recognizer.dart:239:6)
at TapGestureRecognizer.handleTapUp$2$down$up (tap.dart:627:11)
If you use --source-maps with a release build, you will still get the dart file and line number, but the class/method names in the stacktrace will be obfuscated.
And, if you copy the lib directory into the root of built web directory, it will display the source code when you click on the dart file/line number in the stacktrace. Also, you can set breakpoints in the dart code, just like you can do when you do flutter run web.
The only way I have found to do this is to use flutter run -d chrome. We would then need to locate where the files on disk are located.
when i create a new flutter project in vscode it will immediately shows an error in the main.dart file and gives a gradle error when trying to debug.
shown here: main.dart error
"compiler message: lib/main.dart:68:19: Error: Too few positional arguments: 1 required, 0 given."
I've reinstalled dart and flutter plugins. updated the java install.
in debug console i get this:
debug console
added output of flutter doctor -v
enter image description here
I was also facing the same error, but it was always on my test folder.
This is what I did:
On your terminal, make sure you are in your project repository.
Run the flutter pub get command, it worked for me, may be you
should try it too.
Do you possibly have two different versions of the Flutter SDK on your machine? I wonder if one is being used by flutter create and the other for analysis.
If you're sure you only have one, please open an issue on GitHub and attach a log file for me to investigate.