Brought in ExpressionToString

BREAKING_CHANGES.md

@@ -23,7 +23,7 @@ You can read the original problem specification and discussion  [here](https://g
 
 If your project has been impacted by this particular breaking change, you might consider reevaluate the correctness of the affected tests. 
 
-## Error Messages
+## Error Message Quotes
 
 Some error messages surrounded actual values in double quotes. Others surrounded the values in single quotes. In version 3.0.0 *all* values are surrounded in single quotes.
 
@@ -33,7 +33,27 @@ Consistency.
 
 ### Fix
 
-Amend all effected tests to expect single quotes instead of double quotes.
+Amend any affected tests to expect single quotes instead of double quotes.
+
+## Error Message Lambda Expression
+
+In error messages, lambda expressions arguments are now surrounded in a pair of parentheses. For example:
+
+	... to pass the given condition (model => (model.Property1 != null))
+
+will now look like this:
+
+	... to pass the given condition ((model) => (model.Property1 != null))
+
+As you can see, the argument called `model` is now surrounded in parentheses.
+
+###Reason
+
+FluentMVCTesting now uses [ExpressionToString](https://github.com/JakeGinnivan/ExpressionToString) to humanize expression trees. ExpressionToString surrounds arguments in parentheses.
+
+###Fix
+
+Amend any affected tests to expect lambda expression arguments to be surrounded in parentheses.
 
 # Version 2.0.0
 

TestStack.FluentMVCTesting.Tests/TestStack.FluentMVCTesting.Tests.csproj

@@ -89,7 +89,6 @@
     <Compile Include="ControllerResultTestTests\ShouldReturnEmptyResultTests.cs" />
     <Compile Include="ControllerResultTestTests\ShouldReturnJsonTests.cs" />
     <Compile Include="ControllerResultTestTests\ShouldReturnContentTests.cs" />
-    <Compile Include="Internal\ExpressionInspectorTests.cs" />
     <Compile Include="RouteValueDictionaryExtensionsTests.cs" />
     <Compile Include="TempDataResultTest.cs" />
     <Compile Include="TestControllers\AsyncController.cs" />

TestStack.FluentMVCTesting.Tests/ViewResultTestTests.cs

@@ -72,7 +72,7 @@ public void Check_for_invalid_model_using_predicate()
             var exception = Assert.Throws<ViewResultModelAssertionException>(() =>
                 _viewResultTest.WithModel<TestViewModel>(m => m.Property1 == null)
             );
-            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model {{\"Property1\":\"{0}\",\"Property2\":{1}}} to pass the given condition (m => (m.Property1 == null)), but it failed.", _model.Property1, _model.Property2)));
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model {{\"Property1\":\"{0}\",\"Property2\":{1}}} to pass the given condition ((m) => (m.Property1 == null)), but it failed.", _model.Property1, _model.Property2)));
         }
 
         [Test]
@@ -81,7 +81,7 @@ public void Check_for_invalid_model_using_predicate_with_conditional_or()
             var exception = Assert.Throws<ViewResultModelAssertionException>(() =>
                 _viewResultTest.WithModel<TestViewModel>(m => m.Property1 == null || m.Property2 == 1)
             );
-            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model {{\"Property1\":\"{0}\",\"Property2\":{1}}} to pass the given condition (m => ((m.Property1 == null) || (m.Property2 == 1))), but it failed.", _model.Property1, _model.Property2)));
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model {{\"Property1\":\"{0}\",\"Property2\":{1}}} to pass the given condition ((m) => ((m.Property1 == null) || (m.Property2 == 1))), but it failed.", _model.Property1, _model.Property2)));
         }
 
         [Test]
@@ -91,7 +91,18 @@ public void Check_for_invalid_model_using_predicate_with_primitive_operand()
             var exception = Assert.Throws<ViewResultModelAssertionException>(() =>
                 _viewResultTest.WithModel<string>(m => m == "ab")
             );
-            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model \"{0}\" to pass the given condition (m => (m == \"ab\")), but it failed.", _viewResult.ViewData.Model)));
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model \"{0}\" to pass the given condition ((m) => (m == \"ab\")), but it failed.", _viewResult.ViewData.Model)));
+        }
+
+        [Test]
+        public void Check_for_invalid_model_using_predicate_with_captured_var_operand()
+        {
+            var capturedOuterVar = "ab";
+            _viewResult.ViewData.Model = "abc";
+            var exception = Assert.Throws<ViewResultModelAssertionException>(() =>
+                _viewResultTest.WithModel<string>(m => m == capturedOuterVar)
+            );
+            Assert.That(exception.Message, Is.EqualTo(string.Format("Expected view model \"{0}\" to pass the given condition ((m) => (m == capturedOuterVar)), but it failed.", _viewResult.ViewData.Model)));
         }
 
         [Test]