drift/moor_generator/test/parser/parser_test.dart

import 'package:analyzer/dart/element/element.dart';
import 'package:moor_generator/src/model/specified_column.dart';
import 'package:moor_generator/src/options.dart';
import 'package:moor_generator/src/parser/column_parser.dart';
import 'package:moor_generator/src/parser/table_parser.dart';
import 'package:moor_generator/src/shared_state.dart';
import 'package:test_api/test_api.dart';
import 'package:build_test/build_test.dart';

void main() async {
  LibraryElement testLib;
  SharedState state;

  setUpAll(() async {
    testLib = await resolveSource(r''' 
     library test_parser;
     
     import 'package:moor/moor.dart';
     
     class TableWithCustomName extends Table {
       @override
       String get tableName => "my-fancy-table"
     }
     
     class Users extends Table {
       IntColumn get id => integer().autoIncrement()();
       TextColumn get name => text().named("user_name").withLength(min: 6, max: 32)();
       TextColumn get onlyMax => text().withLength(max: 100)();
       
       DateTimeColumn get defaults => dateTime().withDefault(currentDate)();
     }
     
     class CustomPrimaryKey extends Table {
        IntColumn get partA => integer()();
        IntColumn get partB => integer().customConstraint('custom')();
        
        @override
        Set<Column> get primaryKey => {partA, partB};
     }
     
     class WrongName extends Table {
        
         String constructTableName() {
            return "my-table-name";
         }
       
         @override
         String get tableName => constructTableName();
     }
    ''', (r) => r.findLibraryByName('test_parser'));
  });

  setUp(() {
    state = SharedState(const MoorOptions.defaults())
      ..columnParser = ColumnParser(state)
      ..tableParser = TableParser(state);
  });

  group('SQL table name', () {
    test('should parse correctly when valid', () {
      expect(
          TableParser(state)
              .parse(testLib.getType('TableWithCustomName'))
              .sqlName,
          equals('my-fancy-table'));
    });

    test('should use class name if table name is not specified', () {
      expect(TableParser(state).parse(testLib.getType('Users')).sqlName,
          equals('users'));
    });

    test('should not parse for complex methods', () async {
      TableParser(state).parse(testLib.getType('WrongName'));

      expect(state.errors.errors, isNotEmpty);
    });
  });

  group('Columns', () {
    test('should use field name if no name has been set explicitely', () {
      final table = TableParser(state).parse(testLib.getType('Users'));
      final idColumn =
          table.columns.singleWhere((col) => col.name.name == 'id');

      expect(idColumn.name, equals(ColumnName.implicitly('id')));
    });

    test('should use explicit name, if it exists', () {
      final table = TableParser(state).parse(testLib.getType('Users'));
      final idColumn =
          table.columns.singleWhere((col) => col.name.name == 'user_name');

      expect(idColumn.name, equals(ColumnName.explicitly('user_name')));
    });

    test('should parse min and max length for text columns', () {
      final table = TableParser(state).parse(testLib.getType('Users'));
      final idColumn =
          table.columns.singleWhere((col) => col.name.name == 'user_name');

      expect(idColumn.features,
          contains(LimitingTextLength.withLength(min: 6, max: 32)));
    });

    test('should only parse max length when relevant', () {
      final table = TableParser(state).parse(testLib.getType('Users'));
      final idColumn =
          table.columns.singleWhere((col) => col.dartGetterName == 'onlyMax');

      expect(
          idColumn.features, contains(LimitingTextLength.withLength(max: 100)));
    });

    test('parses custom constraints', () {
      final table =
          TableParser(state).parse(testLib.getType('CustomPrimaryKey'));

      final partA =
          table.columns.singleWhere((c) => c.dartGetterName == 'partA');
      final partB =
          table.columns.singleWhere((c) => c.dartGetterName == 'partB');

      expect(partB.customConstraints, 'custom');
      expect(partA.customConstraints, isNull);
    });

    test('parsed default values', () {
      final table = TableParser(state).parse(testLib.getType('Users'));
      final defaultsColumn =
          table.columns.singleWhere((c) => c.name.name == 'defaults');

      expect(defaultsColumn.defaultArgument.toString(), 'currentDate');
    });
  });

  test('parses custom primary keys', () {
    final table = TableParser(state).parse(testLib.getType('CustomPrimaryKey'));

    expect(table.primaryKey, containsAll(table.columns));
    expect(table.columns.any((column) => column.hasAI), isFalse);
  });
}