remove delete code from app as well

packages/leaderboard_repository/lib/src/leaderboard_repository.dart

@@ -44,7 +44,6 @@ class LeaderboardRepository {
       final tenthPositionScore = leaderboard[9].score;
       if (entry.score > tenthPositionScore) {
         await _saveScore(entry);
-        await _deleteScoresUnder(tenthPositionScore);
       }
     }
   }
@@ -91,23 +90,6 @@ class LeaderboardRepository {
       throw AddLeaderboardEntryException(error, stackTrace);
     }
   }
-
-  Future<void> _deleteScoresUnder(int score) async {
-    try {
-      final querySnapshot = await _firebaseFirestore
-          .collection(_leaderboardCollectionName)
-          .where(_scoreFieldName, isLessThanOrEqualTo: score)
-          .get();
-      final documents = querySnapshot.docs;
-      for (final document in documents) {
-        await document.reference.delete();
-      }
-    } on LeaderboardDeserializationException {
-      rethrow;
-    } on Exception catch (error, stackTrace) {
-      throw DeleteLeaderboardException(error, stackTrace);
-    }
-  }
 }
 
 extension on List<QueryDocumentSnapshot> {

packages/leaderboard_repository/lib/src/models/exceptions.dart

@@ -40,16 +40,6 @@ class FetchLeaderboardException extends LeaderboardException {
       : super(error, stackTrace);
 }
 
-/// {@template delete_leaderboard_exception}
-/// Exception thrown when failure occurs while deleting the leaderboard under
-/// the tenth position.
-/// {@endtemplate}
-class DeleteLeaderboardException extends LeaderboardException {
-  /// {@macro fetch_top_10_leaderboard_exception}
-  const DeleteLeaderboardException(Object error, StackTrace stackTrace)
-      : super(error, stackTrace);
-}
-
 /// {@template add_leaderboard_entry_exception}
 /// Exception thrown when failure occurs while adding entry to leaderboard.
 /// {@endtemplate}

packages/leaderboard_repository/test/src/leaderboard_repository_test.dart

@@ -245,73 +245,10 @@ void main() {
         );
       });
 
-      test(
-          'throws DeleteLeaderboardException '
-          'when deleting scores outside the top 10 fails', () async {
-        final deleteQuery = _MockQuery();
-        final deleteQuerySnapshot = _MockQuerySnapshot();
-        final newScore = LeaderboardEntryData(
-          playerInitials: 'ABC',
-          score: 15000,
-          character: CharacterType.android,
-        );
-        final leaderboardScores = [
-          10000,
-          9500,
-          9000,
-          8500,
-          8000,
-          7500,
-          7000,
-          6500,
-          6000,
-          5500,
-          5000,
-        ];
-        final deleteDocumentSnapshots = [5500, 5000].map((score) {
-          final queryDocumentSnapshot = _MockQueryDocumentSnapshot();
-          when(queryDocumentSnapshot.data).thenReturn(<String, dynamic>{
-            'character': 'dash',
-            'playerInitials': 'AAA',
-            'score': score
-          });
-          when(() => queryDocumentSnapshot.id).thenReturn('id$score');
-          when(() => queryDocumentSnapshot.reference)
-              .thenReturn(documentReference);
-          return queryDocumentSnapshot;
-        }).toList();
-        when(deleteQuery.get).thenAnswer((_) async => deleteQuerySnapshot);
-        when(() => deleteQuerySnapshot.docs)
-            .thenReturn(deleteDocumentSnapshots);
-        final queryDocumentSnapshots = leaderboardScores.map((score) {
-          final queryDocumentSnapshot = _MockQueryDocumentSnapshot();
-          when(queryDocumentSnapshot.data).thenReturn(<String, dynamic>{
-            'character': 'dash',
-            'playerInitials': 'AAA',
-            'score': score
-          });
-          when(() => queryDocumentSnapshot.id).thenReturn('id$score');
-          when(() => queryDocumentSnapshot.reference)
-              .thenReturn(documentReference);
-          return queryDocumentSnapshot;
-        }).toList();
-        when(
-          () => collectionReference.where('score', isLessThanOrEqualTo: 5500),
-        ).thenAnswer((_) => deleteQuery);
-        when(() => documentReference.delete()).thenThrow(Exception('oops'));
-        when(() => querySnapshot.docs).thenReturn(queryDocumentSnapshots);
-        expect(
-          () => leaderboardRepository.addLeaderboardEntry(newScore),
-          throwsA(isA<DeleteLeaderboardException>()),
-        );
-      });
-
       test(
           'saves the new score when there are more than 10 scores in the '
-          'leaderboard and the new score is higher than the lowest top 10, and '
-          'deletes the scores that are not in the top 10 anymore', () async {
-        final deleteQuery = _MockQuery();
-        final deleteQuerySnapshot = _MockQuerySnapshot();
+          'leaderboard and the new score is higher than the lowest top 10',
+          () async {
         final newScore = LeaderboardEntryData(
           playerInitials: 'ABC',
           score: 15000,
@@ -330,21 +267,6 @@ void main() {
           5500,
           5000,
         ];
-        final deleteDocumentSnapshots = [5500, 5000].map((score) {
-          final queryDocumentSnapshot = _MockQueryDocumentSnapshot();
-          when(queryDocumentSnapshot.data).thenReturn(<String, dynamic>{
-            'character': 'dash',
-            'playerInitials': 'AAA',
-            'score': score
-          });
-          when(() => queryDocumentSnapshot.id).thenReturn('id$score');
-          when(() => queryDocumentSnapshot.reference)
-              .thenReturn(documentReference);
-          return queryDocumentSnapshot;
-        }).toList();
-        when(deleteQuery.get).thenAnswer((_) async => deleteQuerySnapshot);
-        when(() => deleteQuerySnapshot.docs)
-            .thenReturn(deleteDocumentSnapshots);
         final queryDocumentSnapshots = leaderboardScores.map((score) {
           final queryDocumentSnapshot = _MockQueryDocumentSnapshot();
           when(queryDocumentSnapshot.data).thenReturn(<String, dynamic>{
@@ -357,15 +279,10 @@ void main() {
               .thenReturn(documentReference);
           return queryDocumentSnapshot;
         }).toList();
-        when(
-          () => collectionReference.where('score', isLessThanOrEqualTo: 5500),
-        ).thenAnswer((_) => deleteQuery);
-        when(() => documentReference.delete())
-            .thenAnswer((_) async => Future.value());
+
         when(() => querySnapshot.docs).thenReturn(queryDocumentSnapshots);
         await leaderboardRepository.addLeaderboardEntry(newScore);
         verify(() => collectionReference.add(newScore.toJson())).called(1);
-        verify(() => documentReference.delete()).called(2);
       });
     });