chore: add tests + doc (#17)

assets/data_test.csv

@@ -1,3 +1,3 @@
-10;13;14;25;1;35;5;15/04/2024
-1;16;10;6;39;37;2;18/04/2024
 1;6;25;10;33;39;2;22/04/2024
+1;16;10;6;39;37;2;18/04/2024
+10;13;14;25;1;35;5;15/04/2024

example/pubspec.lock

@@ -137,7 +137,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.16"
+    version: "0.0.17"
   matcher:
     dependency: transitive
     description:

lib/lottery.dart

@@ -156,4 +156,13 @@ class Lottery {
   void dispose() {
     _instance = null;
   }
+
+  /// Function to get the length of [gridsFromCsv].
+  int getNumberOfGrids() => gridsFromCsv.length;
+
+  /// Function to get when the more recent grid has been drawn.
+  String? lastGridDrawnAt() => gridsFromCsv.firstOrNull?.drawnAt;
+
+  /// Function to get when the first grid (chronologically) has been drawn
+  String? firstGridDrawnAt() => gridsFromCsv.lastOrNull?.drawnAt;
 }

lib/src/view/widgets/lottery_statistics.dart

@@ -26,19 +26,19 @@ class LotteryStatistics extends StatelessWidget {
             _StatisticItem(
               title: 'Grids from data',
               cardColor: cardColor,
-              content: Lottery().gridsFromCsv.length.toString(),
+              content: Lottery().getNumberOfGrids().toString(),
             ),
             const SizedBox(height: 16),
             _StatisticItem(
               title: 'Last grid drawn',
               cardColor: cardColor,
-              content: Lottery().gridsFromCsv.firstOrNull?.drawnAt ?? '?',
+              content: Lottery().lastGridDrawnAt() ?? '?',
             ),
             const SizedBox(height: 16),
             _StatisticItem(
               title: 'First grid drawn',
               cardColor: cardColor,
-              content: Lottery().gridsFromCsv.lastOrNull?.drawnAt ?? '?',
+              content: Lottery().firstGridDrawnAt() ?? '?',
             ),
           ],
         ),

pubspec.yaml

@@ -1,6 +1,6 @@
 name: lottery
 description: "A new Flutter project."
-version: 0.0.16
+version: 0.0.17
 
 environment:
   sdk: '>=3.3.3 <4.0.0'

test/lottery_test.dart

@@ -45,9 +45,9 @@ void main() {
 
     test('Test initialize drawnAt for each grid', () async {
       await _initializeLottery();
-      expect(Lottery().gridsFromCsv[0].drawnAt, '15/04/2024');
+      expect(Lottery().gridsFromCsv[0].drawnAt, '22/04/2024');
       expect(Lottery().gridsFromCsv[1].drawnAt, '18/04/2024');
-      expect(Lottery().gridsFromCsv[2].drawnAt, '22/04/2024');
+      expect(Lottery().gridsFromCsv[2].drawnAt, '15/04/2024');
     });
   });
 
@@ -68,7 +68,7 @@ void main() {
         specialNumbers: {1, 35, 5},
       );
       expect(
-        Lottery().wasWinningGrid(gridModel) == Lottery().gridsFromCsv.first,
+        Lottery().wasWinningGrid(gridModel) == Lottery().gridsFromCsv.last,
         true,
       );
     });
@@ -82,4 +82,19 @@ void main() {
       expect(Lottery().wasWinningGrid(gridModel), null);
     });
   });
+
+  test('Test getNumberOfGrids', () async {
+    await _initializeLottery();
+    expect(Lottery().getNumberOfGrids(), 3);
+  });
+
+  test('Test lastGridDrawnAt', () async {
+    await _initializeLottery();
+    expect(Lottery().lastGridDrawnAt(), '22/04/2024');
+  });
+
+  test('Test firstGridDrawnAt', () async {
+    await _initializeLottery();
+    expect(Lottery().firstGridDrawnAt(), '15/04/2024');
+  });
 }