import 'package:cyberhybridhub_server/spelling/spelling_progress_policy.dart';
import 'package:test/test.dart';

void main() {
  test('weightForScore never drops below minWeight', () {
    expect(
      SpellingProgressPolicy.weightForScore(100),
      SpellingProgressPolicy.minWeight,
    );
  });

  test('weightForScore is higher for negative familiarity', () {
    expect(
      SpellingProgressPolicy.weightForScore(-3),
      greaterThan(SpellingProgressPolicy.weightForScore(0)),
    );
  });

  test('weightForScore is lower for positive familiarity', () {
    expect(
      SpellingProgressPolicy.weightForScore(5),
      lessThan(SpellingProgressPolicy.weightForScore(0)),
    );
  });

  test('scoreAfterAttempt moves up on correct and down on wrong', () {
    expect(
      SpellingProgressPolicy.scoreAfterAttempt(currentScore: 2, correct: true),
      3,
    );
    expect(
      SpellingProgressPolicy.scoreAfterAttempt(
        currentScore: 2,
        correct: false,
      ),
      1,
    );
  });
}