diff --git a/TestStack.FluentMVCTesting.Mvc3/TestStack.FluentMVCTesting.Mvc3.csproj b/TestStack.FluentMVCTesting.Mvc3/TestStack.FluentMVCTesting.Mvc3.csproj
index b6989a6..9fcc5c4 100644
--- a/TestStack.FluentMVCTesting.Mvc3/TestStack.FluentMVCTesting.Mvc3.csproj
+++ b/TestStack.FluentMVCTesting.Mvc3/TestStack.FluentMVCTesting.Mvc3.csproj
@@ -88,6 +88,9 @@
     <Compile Include="..\TestStack.FluentMvcTesting\ModelTest.cs">
       <Link>ModelTest.cs</Link>
     </Compile>
+    <Compile Include="..\TestStack.FluentMvcTesting\TempDataResultTest.cs">
+      <Link>TempDataResultTest.cs</Link>
+    </Compile>
     <Compile Include="..\TestStack.FluentMvcTesting\ViewResultTest.cs">
       <Link>ViewResultTest.cs</Link>
     </Compile>
diff --git a/TestStack.FluentMVCTesting.Tests/ControllerExtensionsTests.cs b/TestStack.FluentMVCTesting.Tests/ControllerExtensionsTests.cs
index 685aa3e..21cd3b8 100644
--- a/TestStack.FluentMVCTesting.Tests/ControllerExtensionsTests.cs
+++ b/TestStack.FluentMVCTesting.Tests/ControllerExtensionsTests.cs
@@ -1,4 +1,5 @@
-using NUnit.Framework;
+using System.IO;
+using NUnit.Framework;
 using TestStack.FluentMVCTesting.Tests.TestControllers;
 
 namespace TestStack.FluentMVCTesting.Tests
@@ -41,5 +42,109 @@ public void Throw_exception_for_child_action_call_to_non_child_action()
             var exception = Assert.Throws<InvalidControllerActionException>(() => _controller.WithCallToChild(c => c.SomeAction()));
             Assert.That(exception.Message, Is.EqualTo("Expected action SomeAction of controller ControllerExtensionsController to be a child action, but it didn't have the ChildActionOnly attribute."));
         }
+
+        [Test]
+        public void Check_for_existent_temp_data_property()
+        {
+            const string key = "";
+            _controller.TempData[key] = "";
+
+            _controller.ShouldHaveTempDataProperty(key);
+        }
+
+        [Test]
+        public void Check_for_non_existent_temp_data_property()
+        {
+            const string key = "";
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _controller.ShouldHaveTempDataProperty(key));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format(
+                "Expected TempData to have a non-null value with key \"{0}\", but none found.", key)));
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value()
+        {
+            const string key = "";
+            const int value = 10;
+            _controller.TempData[key] = value;
+
+            _controller.ShouldHaveTempDataProperty(key, value);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_invalid_value()
+        {
+            const string key = "";
+            const int actualValue = 0;
+            const int expectedValue = 1;
+            _controller.TempData[key] = actualValue;
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _controller.ShouldHaveTempDataProperty(key, expectedValue));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected value for key \"{0}\" to be \"{1}\", but instead found \"{2}\"", key, expectedValue, actualValue)));
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_invalid_value_of_different_types()
+        {
+            const string key = "";
+            const int actualValue = 0;
+            const string expectedValue = "one";
+            _controller.TempData[key] = actualValue;
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _controller.ShouldHaveTempDataProperty(key, expectedValue));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected value to be of type {0}, but instead was {1}.", expectedValue.GetType().FullName, actualValue.GetType().FullName)));
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value_valid_using_referential_equality()
+        {
+            const string key = "";
+            MemoryStream expectedValue = new MemoryStream();
+            _controller.TempData[key] = expectedValue;
+
+            _controller.ShouldHaveTempDataProperty(key, expectedValue);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value_using_valid_predicate()
+        {
+            const string key = "";
+            const int value = 1;
+            _controller.TempData[key] = value;
+
+            _controller
+                .ShouldHaveTempDataProperty<int>(key, x => x == value);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value_using_invalid_predicate()
+        {
+            const string key = "";
+            _controller.TempData[key] = 1;
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _controller.ShouldHaveTempDataProperty<int>(key, x => x == 0));
+
+            Assert.That(exception.Message, Is.EqualTo("Expected view model to pass the given condition, but it failed."));
+        }
+
+        [Test]
+        public void Check_for_non_existent_temp_data_property_when_supplied_with_predicate()
+        {
+            const string key = "";
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _controller.ShouldHaveTempDataProperty<int>(key, x => x == 0));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format(
+                "Expected TempData to have a non-null value with key \"{0}\", but none found.", key)));
+        }
     }
 }
diff --git a/TestStack.FluentMVCTesting.Tests/TempDataResultTest.cs b/TestStack.FluentMVCTesting.Tests/TempDataResultTest.cs
new file mode 100644
index 0000000..d97f0f9
--- /dev/null
+++ b/TestStack.FluentMVCTesting.Tests/TempDataResultTest.cs
@@ -0,0 +1,123 @@
+using System.IO;
+using NUnit.Framework;
+using TestStack.FluentMVCTesting.Tests.TestControllers;
+
+namespace TestStack.FluentMVCTesting.Tests
+{
+    [TestFixture]
+    public class TempDataResultTestShould
+    {
+        private ControllerExtensionsController _controller;
+        private TempDataResultTest _tempDataTest;
+
+        [SetUp]
+        public void Setup()
+        {
+            _controller = new ControllerExtensionsController();
+            _tempDataTest = new TempDataResultTest(_controller);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property()
+        {
+            const string key = "";
+            _controller.TempData[key] = "";
+
+            _tempDataTest.AndShouldHaveTempDataProperty(key);
+        }
+
+        [Test]
+        public void Check_for_non_existent_temp_data_property()
+        {
+            const string key = "";
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _tempDataTest.AndShouldHaveTempDataProperty(key));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format(
+                "Expected TempData to have a non-null value with key \"{0}\", but none found.", key)));
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value()
+        {
+            const string key = "";
+            const int value = 10;
+            _controller.TempData[key] = value;
+
+            _tempDataTest.AndShouldHaveTempDataProperty(key, value);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_invalid_value()
+        {
+            const string key = "";
+            const int actualValue = 0;
+            const int expectedValue = 1;
+            _controller.TempData[key] = actualValue;
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _tempDataTest.AndShouldHaveTempDataProperty(key, expectedValue));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected value for key \"{0}\" to be \"{1}\", but instead found \"{2}\"", key, expectedValue, actualValue)));
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_invalid_value_of_different_types()
+        {
+            const string key = "";
+            const int actualValue = 0;
+            const string expectedValue = "one";
+            _controller.TempData[key] = actualValue;
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _tempDataTest.AndShouldHaveTempDataProperty(key, expectedValue));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected value to be of type {0}, but instead was {1}.", expectedValue.GetType().FullName, actualValue.GetType().FullName)));
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value_valid_using_referential_equality()
+        {
+            const string key = "";
+            MemoryStream expectedValue = new MemoryStream();
+            _controller.TempData[key] = expectedValue;
+
+            _tempDataTest.AndShouldHaveTempDataProperty(key, expectedValue);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value_using_valid_predicate()
+        {
+            const string key = "";
+            const int value = 1;
+            _controller.TempData[key] = value;
+
+            _tempDataTest.AndShouldHaveTempDataProperty<int>(key, x => x == value);
+        }
+
+        [Test]
+        public void Check_for_existent_temp_data_property_and_check_value_using_invalid_predicate()
+        {
+            const string key = "";
+            _controller.TempData[key] = 1;
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _tempDataTest.AndShouldHaveTempDataProperty<int>(key, x => x == 0));
+
+            Assert.That(exception.Message, Is.EqualTo("Expected view model to pass the given condition, but it failed."));
+        }
+
+        [Test]
+        public void Check_for_non_existent_temp_data_property_when_supplied_with_predicate()
+        {
+            const string key = "";
+
+            var exception = Assert.Throws<TempDataAssertionException>(() =>
+                _tempDataTest.AndShouldHaveTempDataProperty<int>(key, x => x == 0));
+
+            Assert.That(exception.Message, Is.EqualTo(string.Format(
+                "Expected TempData to have a non-null value with key \"{0}\", but none found.", key)));
+        }
+    }
+}
\ No newline at end of file
diff --git a/TestStack.FluentMVCTesting.Tests/TestStack.FluentMVCTesting.Tests.csproj b/TestStack.FluentMVCTesting.Tests/TestStack.FluentMVCTesting.Tests.csproj
index 052bffa..831b7d1 100644
--- a/TestStack.FluentMVCTesting.Tests/TestStack.FluentMVCTesting.Tests.csproj
+++ b/TestStack.FluentMVCTesting.Tests/TestStack.FluentMVCTesting.Tests.csproj
@@ -79,6 +79,7 @@
   <ItemGroup>
     <Compile Include="AsyncControllerTests.cs" />
     <Compile Include="RouteValueDictionaryExtensionsTests.cs" />
+    <Compile Include="TempDataResultTest.cs" />
     <Compile Include="TestControllers\AsyncController.cs" />
     <Compile Include="ControllerExtensionsTests.cs" />
     <Compile Include="ControllerResultTestTests.cs" />
@@ -106,4 +107,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>
\ No newline at end of file
diff --git a/TestStack.FluentMvcTesting/ControllerExtensions.cs b/TestStack.FluentMvcTesting/ControllerExtensions.cs
index a3f9948..efad62b 100644
--- a/TestStack.FluentMvcTesting/ControllerExtensions.cs
+++ b/TestStack.FluentMvcTesting/ControllerExtensions.cs
@@ -59,5 +59,50 @@ public static ControllerResultTest<T> WithCallToChild<T, TAction>(this T control
 
             return controller.WithCallTo(actionCall);
         }
+
+        public static TempDataResultTest ShouldHaveTempDataProperty(this ControllerBase controller, string key, object value = null)
+        {
+            var actual = controller.TempData[key];
+
+            if (actual == null)
+            {
+                throw new TempDataAssertionException(string.Format(
+                    "Expected TempData to have a non-null value with key \"{0}\", but none found.", key));
+            }
+
+            if (value != null && actual.GetType() != value.GetType())
+            {
+                throw new TempDataAssertionException(string.Format(
+                    "Expected value to be of type {0}, but instead was {1}.",
+                    value.GetType().FullName,
+                    actual.GetType().FullName));
+            }
+
+            if (value != null && !value.Equals(actual))
+            {
+                throw new TempDataAssertionException(string.Format(
+                    "Expected value for key \"{0}\" to be \"{1}\", but instead found \"{2}\"", key, value, actual));
+            }
+
+            return new TempDataResultTest(controller);
+        }
+
+        public static TempDataResultTest ShouldHaveTempDataProperty<TValue>(this ControllerBase controller, string key, Func<TValue, bool> predicate)
+        {
+            var actual = controller.TempData[key];
+
+            if (actual == null)
+            {
+                throw new TempDataAssertionException(string.Format(
+                    "Expected TempData to have a non-null value with key \"{0}\", but none found.", key));
+            }
+
+            if (!predicate((TValue)actual))
+            {
+                throw new TempDataAssertionException("Expected view model to pass the given condition, but it failed.");
+            }
+
+            return new TempDataResultTest(controller);
+        }
     }
 }
diff --git a/TestStack.FluentMvcTesting/Exceptions.cs b/TestStack.FluentMvcTesting/Exceptions.cs
index ca901bf..e3b36e5 100644
--- a/TestStack.FluentMvcTesting/Exceptions.cs
+++ b/TestStack.FluentMvcTesting/Exceptions.cs
@@ -3,6 +3,11 @@
 namespace TestStack.FluentMVCTesting
 {
 
+    public class TempDataAssertionException : Exception
+    {
+        public TempDataAssertionException(string message) : base(message) { }
+    }
+
     public class ActionResultAssertionException : Exception
     {
         public ActionResultAssertionException(string message) : base(message) { }
diff --git a/TestStack.FluentMvcTesting/TempDataResultTest.cs b/TestStack.FluentMvcTesting/TempDataResultTest.cs
new file mode 100644
index 0000000..013378b
--- /dev/null
+++ b/TestStack.FluentMvcTesting/TempDataResultTest.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Web.Mvc;
+
+namespace TestStack.FluentMVCTesting
+{
+    public class TempDataResultTest
+    {
+        private readonly ControllerBase _controller;
+
+        public TempDataResultTest(ControllerBase controller)
+        {
+            _controller = controller;
+        }
+
+        public TempDataResultTest AndShouldHaveTempDataProperty(string key, object value = null)
+        {
+            _controller.ShouldHaveTempDataProperty(key, value);
+            return this;
+        }
+
+        public TempDataResultTest AndShouldHaveTempDataProperty<TValue>(string key, Func<TValue, bool> predicate)
+        {
+            _controller.ShouldHaveTempDataProperty(key, predicate);
+            return this;
+        }
+    }
+}
\ No newline at end of file
diff --git a/TestStack.FluentMvcTesting/TestStack.FluentMVCTesting.csproj b/TestStack.FluentMvcTesting/TestStack.FluentMVCTesting.csproj
index 9f4f300..8f45b48 100644
--- a/TestStack.FluentMvcTesting/TestStack.FluentMVCTesting.csproj
+++ b/TestStack.FluentMvcTesting/TestStack.FluentMVCTesting.csproj
@@ -80,6 +80,7 @@
     <Compile Include="ModelErrorTest.cs" />
     <Compile Include="ModelTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="TempDataResultTest.cs" />
     <Compile Include="ViewResultTest.cs" />
   </ItemGroup>
   <ItemGroup>