import 'package:flutter_test/flutter_test.dart';
import 'package:observer/detection/coordinate_mapper.dart';

void main() {
  test('rotation90_center_mapsToViewCenter', () {
    final rect = CoordinateMapper.mapToView(
      0.4, 0.4, 0.6, 0.6,
      90, 1280, 720, 1080, 1920,
    );
    expect(rect.centerX, closeTo(540, 1));
    expect(rect.centerY, closeTo(960, 1));
  });

  test('rotation90_corner_appliesFitCenterOffset', () {
    final rect = CoordinateMapper.mapToView(
      0, 0, 0.5, 0.5,
      90, 1280, 720,
      1080, 2400,
    );
    expect(rect.left, closeTo(540, 1));
    expect(rect.top, closeTo(240, 1));
    expect(rect.right, closeTo(1080, 1));
    expect(rect.bottom, closeTo(1200, 1));
  });

  test('rotation0_keepsCoordinates', () {
    final rect = CoordinateMapper.mapToView(
      0.2, 0.3, 0.5, 0.7,
      0, 1080, 1920,
      1080, 1920,
    );
    expect(rect.left, closeTo(216, 1));
    expect(rect.top, closeTo(576, 1));
    expect(rect.right, closeTo(540, 1));
    expect(rect.bottom, closeTo(1344, 1));
  });

  test('rotation180_flipsBothAxes', () {
    final rect = CoordinateMapper.mapToView(
      0.2, 0.2, 0.4, 0.4,
      180, 1080, 1920,
      1080, 1920,
    );
    expect(rect.left, closeTo(648, 1));
    expect(rect.top, closeTo(1152, 1));
    expect(rect.right, closeTo(864, 1));
    expect(rect.bottom, closeTo(1536, 1));
  });
}