如何使用IDEA dart插件运行unittest？

Question

IDEA dart-plugin provide an option as "run as DartUnit":

I wrote a simple test in unit.dart :

import "package:unittest/unittest.dart";

main() {
    test("aaa", () {
        expect(1, 1);
    });
}

Then I choose this DartUnit option. But it reports I misses something:

Error running Test: unit.dart: Missing library statement in unit.dart

How to fix it?

Answer 1

I found the reason: I need to declare a library in the code, any name is OK.

library aLirary;

...