Use Should.Fluent for assertions.

Twidder.Core.Tests/Twidder.Core.Tests.csproj

@@ -31,6 +31,9 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Should.Fluent">
+      <HintPath>..\packages\ShouldFluent.1.1.12.0\lib\Should.Fluent.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />

Twidder.Core.Tests/TwitterCredentialsTests.cs

@@ -2,6 +2,8 @@
 {
     #region Using Directives
 
+    using Should.Fluent;
+
     using Twiddler.Core.Models;
 
     using Xunit;
@@ -14,14 +16,14 @@ public class TwitterCredentialsTests
         public void GettingAreValid_WhenAccessTokenIsMissing_ReturnsFalse()
         {
             var test = new AccessToken("id", string.Empty, "accessTokenSecret");
-            Assert.False(test.IsValid);
+            test.IsValid.Should().Be.False();
         }
 
         [Fact]
         public void GettingAreValid_WhenCredentialsAreComplete_ReturnsTrue()
         {
             var test = new AccessToken("id", "accessToken", "accessTokenSecret");
-            Assert.True(test.IsValid);
+            test.IsValid.Should().Be.True();
         }
     }
 }

Twidder.Core.Tests/packages.config

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="xunit" version="1.7.0.1540" />
+  <package id="ShouldFluent" version="1.1.12.0" />
 </packages>

Twiddler.AcceptanceTests/AuthorizationStepDefinitions.cs

@@ -2,9 +2,6 @@
 {
     #region Using Directives
 
-    using System;
-
-    using Should.Core.Assertions;
     using Should.Fluent;
 
     using TechTalk.SpecFlow;
@@ -36,13 +33,13 @@ public void ThenAuthorizationShouldFail()
         [Then(@"I should be authorized")]
         public void ThenIShouldBeAuthorized()
         {
-            Assert.Equal("Authorized", Application.AuthorizationStatus, StringComparer.CurrentCultureIgnoreCase);
+            Application.AuthorizationStatus.Should().Equal("Authorized");
         }
 
         [Then(@"I should be unauthorized")]
         public void ThenIShouldBeUnuathorized()
         {
-            Assert.Equal("Unauthorized", Application.AuthorizationStatus, StringComparer.CurrentCultureIgnoreCase);
+            Application.AuthorizationStatus.Should().Equal("Unauthorized");
         }
 
         [When(@"I authorize with Twitter")]

Twiddler.Tests/Commands/ArchiveTweetCommandTests.cs

@@ -2,6 +2,8 @@
 {
     #region Using Directives
 
+    using Should.Fluent;
+
     using Twiddler.Commands;
     using Twiddler.Core.Models;
     using Twiddler.TestData;
@@ -23,23 +25,23 @@ public void CanExecuteChanged_WhenTweetBecomesArchived_IsRaised()
 
             tweet.Archive();
 
-            Assert.True(eventRaised);
+            eventRaised.Should().Be.True();
         }
 
         [Fact]
         public void CanExecute_WhenTweetIsArchived_IsFalse()
         {
             var test = new ArchiveTweetCommand(A.Tweet.Build());
 
-            Assert.True(test.CanExecute(null));
+            test.CanExecute(null).Should().Be.True();
         }
 
         [Fact]
         public void CanExecute_WhenTweetIsNotArchived_IsTrue()
         {
             var test = new ArchiveTweetCommand(A.Tweet.Build());
 
-            Assert.True(test.CanExecute(null));
+            test.CanExecute(null).Should().Be.True();
         }
 
         [Fact]
@@ -50,7 +52,7 @@ public void Execute_WhenTweetIsNotArchived_ArchivesTweet()
 
             test.Execute(null);
 
-            Assert.True(tweet.IsArchived);
+            tweet.IsArchived.Should().Be.True();
         }
     }
 }

Twiddler.Tests/Commands/DeauthorizeCommandTests.cs

@@ -6,6 +6,8 @@ namespace Twiddler.Tests.Commands
 
     using NSubstitute;
 
+    using Should.Fluent;
+
     using Twiddler.Commands;
     using Twiddler.Core.Services;
 
@@ -30,7 +32,7 @@ public void CanExecuteChanged_WhenAuthorizationStatusChanges_IsRaised()
             ClientAuthorizationStatusChangesTo(AuthorizationStatus.Verifying);
             GC.KeepAlive(test);
 
-            Assert.True(eventRaised);
+            eventRaised.Should().Be.True();
         }
 
         [Fact]
@@ -40,7 +42,7 @@ public void CanExecute_WhenAuthorized_ReturnsTrue()
 
             ClientAuthorizationStatusChangesTo(AuthorizationStatus.Authorized);
 
-            Assert.True(test.CanExecute(null));
+            test.CanExecute(null).Should().Be.True();
         }
 
         [Theory]
@@ -54,7 +56,7 @@ public void CanExecute_WhenNotAuthorized_ReturnsFalse(AuthorizationStatus status
 
             ClientAuthorizationStatusChangesTo(status);
 
-            Assert.False(test.CanExecute(null));
+            test.CanExecute(null).Should().Be.False();
         }
 
         [Fact]

Twiddler.Tests/Commands/MarkTweetAsReadCommandTests.cs

@@ -4,6 +4,8 @@
 
     using NSubstitute;
 
+    using Should.Fluent;
+
     using Twiddler.Commands;
     using Twiddler.Core.Models;
     using Twiddler.Core.Services;
@@ -29,23 +31,23 @@ public void CanExecuteChanged_WhenTweetBecomesRead_IsRaised()
 
             _tweet.MarkAsRead();
 
-            Assert.True(eventRaised);
+            eventRaised.Should().Be.True();
         }
 
         [Fact]
         public void CanExecute_WhenTweetIsNotRead_IsTrue()
         {
             MarkTweetAsReadCommand test = BuildDefaultTestSubject();
 
-            Assert.True(test.CanExecute(null));
+            test.CanExecute(null).Should().Be.True();
         }
 
         [Fact]
         public void CanExecute_WhenTweetIsRead_IsFalse()
         {
             MarkTweetAsReadCommand test = BuildDefaultTestSubject();
 
-            Assert.True(test.CanExecute(null));
+            test.CanExecute(null).Should().Be.True();
         }
 
         [Fact]
@@ -55,7 +57,7 @@ public void Execute_WhenTweetIsNotRead_MarksTweetAsRead()
 
             test.Execute(null);
 
-            Assert.True(_tweet.IsRead);
+            _tweet.IsRead.Should().Be.True();
         }
 
         [Fact]

Twiddler.Tests/Screens/ImageThumbnailScreenTests.cs

@@ -6,6 +6,8 @@
 
     using NSubstitute;
 
+    using Should.Fluent;
+
     using Twiddler.Commands.Interfaces;
     using Twiddler.Models;
     using Twiddler.Screens;
@@ -30,31 +32,31 @@ public void GettingFullSize__ReturnsFullSizeFromLocations()
         {
             ImageThumbnailScreen test = BuildDefaultTestSubject();
 
-            Assert.Equal(_imageLocations.FullSize, test.FullSize);
+            test.FullSize.Should().Equal(_imageLocations.FullSize);
         }
 
         [Fact]
         public void GettingLink__ReturnsLinkFromLocations()
         {
             ImageThumbnailScreen test = BuildDefaultTestSubject();
 
-            Assert.Equal(_imageLocations.Link, test.Link);
+            test.Link.Should().Equal(_imageLocations.Link);
         }
 
         [Fact]
         public void GettingOpenCommand__ReturnsCommand()
         {
             ImageThumbnailScreen test = BuildDefaultTestSubject();
 
-            Assert.Same(_openLinkCommand, test.OpenLinkCommand);
+            test.OpenLinkCommand.Should().Be.SameAs(_openLinkCommand);
         }
 
         [Fact]
         public void GettingThumbnail__ReturnsThumbnailFromLocations()
         {
             ImageThumbnailScreen test = BuildDefaultTestSubject();
 
-            Assert.Equal(_imageLocations.Thumbnail, test.Thumbnail);
+            test.Thumbnail.Should().Equal(_imageLocations.Thumbnail);
         }
 
         private ImageThumbnailScreen BuildDefaultTestSubject()

Twiddler.Tests/Screens/LoadingTweetScreenTests.cs

@@ -44,7 +44,7 @@ public void GettingId__ReturnsTweetId()
         {
             LoadingTweetScreen test = BuildDefaultTestSubject();
 
-            Assert.Equal(_tweet.Id, test.Id);
+            test.Id.Should().Equal(_tweet.Id);
         }
 
         [Fact]

Twiddler.Tests/Screens/RequestMeterScreenTests.cs

@@ -9,6 +9,9 @@
 
     using NSubstitute;
 
+    using Should.Core.Exceptions;
+    using Should.Fluent;
+
     using Twiddler.Screens;
     using Twiddler.Services.Interfaces;
 
@@ -39,7 +42,7 @@ public void GettingHourlyLimit__GetsHourlyLimitFromLimitStatus()
             const int hourlyLimit = 350;
             _requestStatus.HourlyLimit = hourlyLimit;
 
-            Assert.Equal(hourlyLimit, test.HourlyLimit);
+            test.HourlyLimit.Should().Equal(hourlyLimit);
         }
 
         [Fact]
@@ -51,7 +54,7 @@ public void GettingPeriodDuration__GetsFormattedPeriodDurationFromLimitStatus()
             RequestMeterScreen test = BuildDefaultTestSubject();
             test.Initialize();
 
-            Assert.Equal("83m", test.PeriodDuration);
+            test.PeriodDuration.Should().Equal("83m");
         }
 
         [Fact]
@@ -62,7 +65,7 @@ public void GettingRemainingHits__GetsRemainingHitsFromLimitStatus()
             const int remainingHits = 33;
             _requestStatus.RemainingHits = remainingHits;
 
-            Assert.Equal(remainingHits, test.RemainingHits);
+            test.RemainingHits.Should().Equal(remainingHits);
         }
 
         [Fact]
@@ -73,7 +76,7 @@ public void GettingRemainingTime_WhenClockHasPassedTheEndTime_ReturnsZero()
             RequestMeterScreen test = BuildDefaultTestSubject();
             test.Initialize();
 
-            Assert.Equal("0m", test.RemainingTime);
+            test.RemainingTime.Should().Equal("0m");
         }
 
         [Fact]
@@ -84,7 +87,7 @@ public void GettingRemainingTime__GetsFormattedRemainingTimeFromLimitStatus()
             RequestMeterScreen test = BuildDefaultTestSubject();
             test.Initialize();
 
-            Assert.Equal("5m", test.RemainingTime);
+            test.RemainingTime.Should().Equal("5m");
         }
 
         [Theory]
@@ -101,7 +104,7 @@ public void GettingUsedHitsFraction__ReturnsFractionOfHourlyLimit(int remainingH
             _requestStatus.RemainingHits = remainingHits;
             _requestStatus.HourlyLimit = 100;
 
-            Assert.Equal(fraction, test.UsedHitsFraction);
+            test.UsedHitsFraction.Should().Equal(fraction);
         }
 
         [Theory]
@@ -117,7 +120,7 @@ public void GettingUsedTimeFraction__ReturnsFractionOfPeriodDuration(int remaini
 
             TimeLeftInPeriodIs(TimeSpan.FromMinutes(remainingMinutes));
 
-            Assert.Equal(fraction, test.UsedTimeFraction);
+            test.UsedTimeFraction.Should().Equal(fraction);
         }
 
         [Fact]
@@ -150,7 +153,8 @@ public void Shutdown__UnsubscribesFromRequestStatusChanges()
             test.Initialize();
             test.Shutdown();
 
-            test.PropertyChanged += (sender, args) => Assert.True(false);
+            test.PropertyChanged +=
+                (sender, args) => { throw new AssertException("No properties should have changed."); };
 
             PropertyChangesOnRequestStatus("RemainingHits");
         }

Twiddler.Tests/Screens/ShellScreenTests.cs

@@ -4,6 +4,8 @@
 
     using NSubstitute;
 
+    using Should.Fluent;
+
     using Twiddler.Screens;
     using Twiddler.Screens.Interfaces;
     using Twiddler.Services.Interfaces;
@@ -27,7 +29,7 @@ public void GettingStatus_WhenInitialized_ReturnsInitializedStatus()
             test.Initialize();
 
             _status.Received().Initialize();
-            Assert.Same(_status, test.Status);
+            test.Status.Should().Be.SameAs(_status);
         }
 
         [Fact]
@@ -37,7 +39,7 @@ public void GettingTimeline_WhenInitialized_ReturnsInitializedTimeline()
             test.Initialize();
 
             _timeline.Received().Initialize();
-            Assert.Same(_timeline, test.Timeline);
+            test.Timeline.Should().Be.SameAs(_timeline);
         }
 
         [Fact]