sdk/pkg/analyzer_cli/test/error_test.dart

// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

library analyzer_cli.test.error;

import 'package:test/test.dart';

import 'utils.dart';

void main() {
  group('error', () {
    test("a valid Dart file doesn't throw any errors", () {
      expect(errorsForFile('void main() => print("Hello, world!");'), isNull);
    });

    test("an empty Dart file doesn't throw any errors", () {
      expect(errorsForFile(''), isNull);
    });

    test("an error on the first line", () {
      expect(
          errorsForFile('void foo;\n'),
          equals(
              "Error in test.dart: Variables can't have a type of 'void'.\n"));
    });

    test("an error on the last line", () {
      expect(
          errorsForFile('\nvoid foo;'),
          equals(
              "Error in test.dart: Variables can't have a type of 'void'.\n"));
    });

    test("an error in the middle", () {
      expect(
          errorsForFile('\nvoid foo;\n'),
          equals(
              "Error in test.dart: Variables can't have a type of 'void'.\n"));
    });

    var veryLongString = new List.filled(107, ' ').join('');

    test("an error at the end of a very long line", () {
      expect(
          errorsForFile('$veryLongString     void foo;'),
          equals(
              "Error in test.dart: Variables can't have a type of 'void'.\n"));
    });

    test("an error at the beginning of a very long line", () {
      expect(
          errorsForFile('void foo;     $veryLongString'),
          equals(
              "Error in test.dart: Variables can't have a type of 'void'.\n"));
    });

    test("an error in the middle of a very long line", () {
      expect(
          errorsForFile('$veryLongString void foo;$veryLongString'),
          equals(
              "Error in test.dart: Variables can't have a type of 'void'.\n"));
    });
  });
}