pkgs/os_detect/test/osid_test.dart

// Copyright (c) 2020, 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.

import 'dart:async';

import 'package:os_detect/os_detect.dart';
import 'package:os_detect/override.dart';
import 'package:test/test.dart';

void main() {
  test('Exists and is consistent', () {
    expect(operatingSystem, isNotNull);
    expect(operatingSystemVersion, isNotNull);

    expect(isLinux, operatingSystem == OperatingSystem.linuxId);
    expect(isAndroid, operatingSystem == OperatingSystem.androidId);
    expect(isMacOS, operatingSystem == OperatingSystem.macOSId);
    expect(isWindows, operatingSystem == OperatingSystem.windowsId);
    expect(isIOS, operatingSystem == OperatingSystem.iOSId);
    expect(isFuchsia, operatingSystem == OperatingSystem.fuchsiaId);
    expect(isBrowser, operatingSystem == OperatingSystem.browserId);
  });

  test('Override', () {
    const overrideName = 'argle-bargle';
    const overrideVersion = 'glop-glyf';
    final overrideOS = OperatingSystem(overrideName, overrideVersion);
    Zone? overrideZone;

    final originalName = operatingSystem;
    final originalVersion = operatingSystemVersion;
    final originalID = OperatingSystem.current;
    final originalZone = Zone.current;
    expect(originalName, isNot(overrideName));
    expect(originalVersion, isNot(overrideVersion));

    // Override OS ID.
    overrideOperatingSystem(overrideOS, () {
      overrideZone = Zone.current;
      expect(operatingSystem, overrideName);
      expect(operatingSystemVersion, overrideVersion);
      expect(OperatingSystem.current, same(overrideOS));
      // Nested override.
      overrideOperatingSystem(originalID, () {
        expect(operatingSystem, originalName);
        expect(operatingSystemVersion, originalVersion);
        expect(OperatingSystem.current, same(originalID));
      });
      expect(operatingSystem, overrideName);
      expect(operatingSystemVersion, overrideVersion);
      expect(OperatingSystem.current, same(overrideOS));
      // Captured parent zone does not have override.
      originalZone.run(() {
        expect(operatingSystem, originalName);
        expect(operatingSystemVersion, originalVersion);
      });
      expect(operatingSystem, overrideName);
      expect(operatingSystemVersion, overrideVersion);
      expect(OperatingSystem.current, same(overrideOS));
    });

    expect(operatingSystem, originalName);
    expect(operatingSystemVersion, originalVersion);

    // A captured override zone retains the override.
    overrideZone!.run(() {
      expect(operatingSystem, overrideName);
      expect(operatingSystemVersion, overrideVersion);
      expect(OperatingSystem.current, same(overrideOS));
    });
  });
}