import 'package:cpd_2022_energy/provider/energy_model.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  EnergyModel model = EnergyModel();

  const double heightStart = 50.0;
  const double heightEnd = 10.0;
  const double velocityStart = 0.0;
  const double velocityEnd = 40.0;
  const double weight = 777.0;

  group('Test Energy Model', () {
    test('Set Values', () {
      model.heightStart = heightStart;
      model.heightEnd = heightEnd;
      model.velocityStart = velocityStart;
      model.velocityEnd = velocityEnd;
      model.weight = weight;
      expect(heightStart, model.heightStart);
      expect(heightEnd, model.heightEnd);
      expect(velocityStart, model.velocityStart);
      expect(velocityEnd, model.velocityEnd);
      expect(weight, model.weight);
    });
    test('Calculate Potential Energy', () {
      expect(double.parse(model.calcPotentialEnergy(model.weight, model.weightForce, model.heightStart).toStringAsFixed(2)), 381118.5);
      expect(double.parse(model.calcPotentialEnergy(model.weight, model.weightForce, model.heightEnd).toStringAsFixed(2)), 76223.70);
    });
    test('Calculate Potential Energy between two point in Joule', () {
      expect(double.parse(model.calcPotentialEnergyBetweenTwoPointsInJoule(model.heightStart, model.heightEnd, model.weight).toStringAsFixed(2)), 304894.8);
    });
    test('Calculate Kinetic Energy', () {
      expect(double.parse(model.calcKineticEnergy(model.weight, model.velocityStart).toStringAsFixed(2)), 0);
      expect(double.parse(model.calcKineticEnergy(model.weight, model.velocityEnd).toStringAsFixed(2)), 621600.0);
    });
    test('Calculate Kinetic Energy between two points in Joule', () {
      expect(double.parse(model.calcKineticEnergyBetweenTwoPointsInJoule(model.velocityStart, model.velocityEnd, model.weight).toStringAsFixed(2)), 621600.0);
    });
    test('Calculate total energy in Kilo Joule', () {
      model.calcTotalEnergyInKiloJoule();
      expect(double.parse(model.totalEnergy.toStringAsFixed(2)), 926.49);
    });
    test('Calculate amount of boiling water', () {
      model.calcBoilingWaterAmount();
      expect(double.parse(model.boilingWaterAmount.toStringAsFixed(2)), 2.77);
    });
    test('Calculate amount of annealing iron', () {
      model.calcIronAnnealingAmount();
      expect(double.parse(model.annealingIronAmount.toStringAsFixed(2)), 3.07);

    });
  });

}