test
Basic Setup
Tests are written just like how you'd write outside of Codewars.
The solution belongs to a package named solution. So it can be imported from package:solution/solution.dart and the optional preloaded code provided by the kata author can be imported from package:solution/preloaded.dart.
Solution
int add(int a, int b) {
  return a + b;
}int add(int a, int b) {
  return a + b;
}Tests
import "package:test/test.dart";
import "package:solution/solution.dart";
void main() {
  group("adder", () {
    test("adds two numbers", () {
      expect(add(1, 2), equals(3));
    });
  });
}import "package:test/test.dart";
import "package:solution/solution.dart";
void main() {
  group("adder", () {
    test("adds two numbers", () {
      expect(add(1, 2), equals(3));
    });
  });
}See test's documentation for how to write tests.