Add test for stdout/stderr redirection (#77)

Consumer/Consumer.fsproj

@@ -11,6 +11,7 @@
         <Compile Include="NoAttribute.fs" />
         <Compile Include="Inconclusive.fs" />
         <Compile Include="TestParallel.fs" />
+        <Compile Include="TestStdout.fs" />
         <Compile Include="TestParameterisedFixture.fs" />
         <Compile Include="TestSetUp.fs" />
         <Compile Include="TestValues.fs" />

Consumer/TestStdout.fs

@@ -0,0 +1,13 @@
+namespace Consumer
+
+open System
+open NUnit.Framework
+
+[<TestFixture>]
+module TestStdout =
+
+    [<Test>]
+    let ``Stdout is redirected`` () =
+        Console.Out.WriteLine "Hi!"
+        Console.WriteLine "Hi! part 2"
+        Console.Error.WriteLine "Bye!"