src/Carnac.Tests/MessageProviderFacts.cs

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reactive.Linq;
using System.Windows.Forms;
using Carnac.Logic;
using Carnac.Logic.KeyMonitor;
using Carnac.Logic.Models;
using Microsoft.Win32;
using NSubstitute;
using Xunit;

namespace Carnac.Tests
{
    public class MessageProviderFacts
    {
        readonly IShortcutProvider shortcutProvider;

        public MessageProviderFacts()
        {
            shortcutProvider = Substitute.For<IShortcutProvider>();
            shortcutProvider.GetShortcutsStartingWith(Arg.Any<KeyPress>()).Returns(new List<KeyShortcut>());
            
        }

        MessageProvider CreateMessageProvider(IObservable<InterceptKeyEventArgs> keysStreamSource)
        {
            var source = Substitute.For<IInterceptKeys>();
            source.GetKeyStream().Returns(keysStreamSource);
            var desktopLockEventService = Substitute.For<IDesktopLockEventService>();
            desktopLockEventService.GetSessionSwitchStream().Returns(Observable.Never<SessionSwitchEventArgs>());
            var keyProvider = new KeyProvider(source, new PasswordModeService(), desktopLockEventService);
            return new MessageProvider(shortcutProvider, keyProvider, new PopupSettings(), new MessageMerger());
        }

        [Fact]
        public void key_with_modifiers_raises_a_new_message()
        {
            // arrange
            var keySequence = KeyStreams.LetterL()
                .Concat(KeyStreams.CtrlShiftL())
                .ToObservable();
            var sut = CreateMessageProvider(keySequence);

            // act
            var messages = sut.GetMessageStream().ToList().Single();

            // assert
            Assert.Equal(2, messages.Count);
        }

        [Fact]
        public void recognises_shortcuts()
        {
            // arrange
            var keySequence = KeyStreams.CtrlShiftL().ToObservable();
            var sut = CreateMessageProvider(keySequence);
            shortcutProvider.GetShortcutsStartingWith(Arg.Any<KeyPress>())
                .Returns(new List<KeyShortcut> { new KeyShortcut("MyShortcut", new KeyPressDefinition(Keys.L, shiftPressed: true, controlPressed: true)) });