This should include testing stuff like issue #3147.

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Can you use --special-command for this?

I don't think so. I need to write a few tests with different --package-root arguments, not run the test suite N times with different command-line arguments.

This comment was originally written by adamle...@gmail.com

One test case from me:
dart --enable-checked-mode --package-root=C:\dart-sdk\pkg\ lib\Adder.dart
fails

but
dart --enable-checked-mode --package-root=CC:\dart-sdk\pkg\ lib\Adder.dart
works fine

Windows7, Dart 13122

For the sake of completeness, Adder.dart:

#library('mylib');
#import('package:unittest/unittest.dart');
class Adder {
  int add(int a, int b) {
    return a+b;
  }
}

void main() {
  test('aaa', (){
    var adder = new Adder();
    expect(adder.add(2,4), equals(6));
  });
}

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I imagine the CFE is sufficient here.