如何测试 main.dart

Question

main.dart

int sumInt(int a, int b) {
  return a + b;
}
int main(List<String> args) {
  var result;
  var a = 10;

  result = sumInt(a, 50);
  return result;
}

gao.dart

int calculate() {
  return 6 +10;
}

gao_test.dart

import 'package:gao/gao.dart';
import 'package:test/test.dart';

void main() {
  test("test to check add method", () {
    expect(calculate, result );
  });
}

The question is, how do I test main.dart? I think importing main.dart in gao_test.dart, but there was an error importing. Please help me.

Answer 1

You will need to import it with a prefix in order to be able to reference the main function (otherwise it is shadowed by your tests main function), so something like this (depending on where main.dart lives):

import 'package:gao/main.dart' as gao_main;
import 'package:test/test.dart';

main() {
  test('main', () {
    expect(gao_main.main([]), 60); 
  });
}

Answer 2

I don't think it can be done. You can use annotation @visibleForTesting to mark anything that will be available for testing. But since test class also has a main, you can't import the "other main" to it.