finlog/finlog_app/fluttery/test/preferences/preferences_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:fluttery/src/preferences/preferences_impl.dart';
import 'package:shared_preferences/shared_preferences.dart';

void main() {
  late PreferencesImpl preferences;

  setUp(() async {
    // Clear any existing data and set up a fresh in-memory instance
    SharedPreferences.setMockInitialValues({});

    // Create preferences instance that will use the real SharedPreferences
    // but with in-memory storage for testing
    final sharedInstance = await SharedPreferences.getInstance();
    preferences = PreferencesImpl(instance: sharedInstance);

    // Give time for initialization
    await Future.delayed(Duration.zero);
  });

  group('PreferencesImpl Tests', () {
    test('setString and getString work with real implementation', () async {
      const key = 'testKey';
      const value = 'testValue';

      await preferences.setString(key, value);
      final result = await preferences.getString(key);

      expect(result, value);
    });

    test('setInt and getInt work with real implementation', () async {
      const key = 'testKey';
      const value = 42;

      await preferences.setInt(key, value);
      final result = await preferences.getInt(key);

      expect(result, value);
    });

    test('setBool and getBool work with real implementation', () async {
      const key = 'testKey';
      const value = true;

      await preferences.setBool(key, value);
      final result = await preferences.getBool(key);

      expect(result, value);
    });

    test('setDouble and getDouble work with real implementation', () async {
      const key = 'testKey';
      const value = 3.14;

      await preferences.setDouble(key, value);
      final result = await preferences.getDouble(key);

      expect(result, value);
    });

    test(
      'setStringList and getStringList work with real implementation',
      () async {
        const key = 'testKey';
        const value = ['one', 'two', 'three'];

        await preferences.setStringList(key, value);
        final result = await preferences.getStringList(key);

        expect(result, value);
      },
    );

    test('remove deletes key-value pair', () async {
      const key = 'testKey';
      const value = 'testValue';

      // Set a value first
      await preferences.setString(key, value);
      expect(await preferences.getString(key), value);

      // Remove it
      await preferences.remove(key);
      final result = await preferences.getString(key);

      expect(result, isNull);
    });

    test('clear removes all data', () async {
      // Set multiple values
      await preferences.setString('key1', 'value1');
      await preferences.setInt('key2', 42);
      await preferences.setBool('key3', true);

      // Verify they exist
      expect(await preferences.getString('key1'), 'value1');
      expect(await preferences.getInt('key2'), 42);
      expect(await preferences.getBool('key3'), true);

      // Clear all
      await preferences.clear();

      // Verify they're gone
      expect(await preferences.getString('key1'), isNull);
      expect(await preferences.getInt('key2'), isNull);
      expect(await preferences.getBool('key3'), isNull);
    });

    test('getting non-existent keys returns null', () async {
      expect(await preferences.getString('nonExistent'), isNull);
      expect(await preferences.getInt('nonExistent'), isNull);
      expect(await preferences.getBool('nonExistent'), isNull);
      expect(await preferences.getDouble('nonExistent'), isNull);
      expect(await preferences.getStringList('nonExistent'), isNull);
    });

    test('can overwrite existing values of the same type', () async {
      const key = 'testKey';
      const initialValue = 'initialValue';
      const newValue = 'newValue';

      await preferences.setString(key, initialValue);
      expect(await preferences.getString(key), initialValue);

      await preferences.setString(key, newValue);
      expect(await preferences.getString(key), newValue);
    });

    test(
      'different keys can store different data types simultaneously',
      () async {
        await preferences.setString('stringKey', 'value');
        await preferences.setInt('intKey', 42);
        await preferences.setBool('boolKey', true);
        await preferences.setDouble('doubleKey', 3.14);
        await preferences.setStringList('listKey', ['a', 'b', 'c']);

        expect(await preferences.getString('stringKey'), 'value');
        expect(await preferences.getInt('intKey'), 42);
        expect(await preferences.getBool('boolKey'), true);
        expect(await preferences.getDouble('doubleKey'), 3.14);
        expect(await preferences.getStringList('listKey'), ['a', 'b', 'c']);
      },
    );

    test('values can be overwritten with different data types', () async {
      const key = 'testKey';

      // Store a string value
      await preferences.setString(key, 'stringValue');
      expect(await preferences.getString(key), 'stringValue');

      // Overwrite with an int - this replaces the string value
      await preferences.setInt(key, 42);
      expect(await preferences.getInt(key), 42);

      // Overwrite with a bool - this replaces the int value
      await preferences.setBool(key, true);
      expect(await preferences.getBool(key), true);
    });

    test('persistence works across multiple operations', () async {
      // Test that values persist through multiple set/get operations
      await preferences.setString('key1', 'value1');
      await preferences.setInt('key2', 100);

      expect(await preferences.getString('key1'), 'value1');
      expect(await preferences.getInt('key2'), 100);

      // Modify one value and ensure the other remains
      await preferences.setString('key1', 'newValue1');
      expect(await preferences.getString('key1'), 'newValue1');
      expect(await preferences.getInt('key2'), 100);
    });
  });
}