Putting tests around TestFrameworkResolver

src/Giles.Core/Giles.Core.csproj

@@ -69,7 +69,7 @@
     <Compile Include="Runners\IFrameworkRunner.cs" />
     <Compile Include="Runners\IRunner.cs" />
     <Compile Include="Runners\ITestListener.cs" />
-    <Compile Include="Runners\ITestRunnerResolver.cs" />
+    <Compile Include="Runners\FrameworkRunnerLocator.cs" />
     <Compile Include="Runners\TestResult.cs" />
     <Compile Include="Runners\TestRunner.cs" />
     <Compile Include="Runners\TestRunnerResolver.cs" />

src/Giles.Core/Runners/TestRunnerResolver.cs

@@ -24,6 +24,9 @@ public TestRunnerResolver()
 
         public IEnumerable<IFrameworkRunner> Resolve(Assembly assembly)
         {
+            if (assembly == null)
+                return Enumerable.Empty<IFrameworkRunner>();
+
             var referencedAssemblies = assembly.GetReferencedAssemblies();
 
             var result =

src/Giles.Specs/Core/Runners/TestRunnerResolverSpecs.cs

@@ -0,0 +1,67 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using Giles.Core.Runners;
+using Machine.Specifications;
+
+namespace Giles.Specs.Core.Runners
+{
+    public class with_a_test_runner_resolver
+    {
+        protected static TestRunnerResolver subject;
+
+        Establish context = () =>
+            subject = new TestRunnerResolver();
+    }
+
+    public class when_resolving_for_a_test_runner_in_an_assembly_without_a_test_framework
+        : with_a_test_runner_resolver
+    {
+        static Assembly assembly;
+        static IEnumerable<IFrameworkRunner> result;
+
+        Establish context = () =>
+            assembly = typeof(TestRunnerResolver).Assembly;
+
+        Because of = () =>
+            result = subject.Resolve(assembly);
+
+        It should_return_an_empty_list_of_framework_runners = () =>
+            result.ShouldBeEmpty();
+    }
+
+    public class when_resolving_for_the_mspec_runner_in_an_assembly_that_references_mspec
+        : with_a_test_runner_resolver
+    {
+        static Assembly assemby;
+        static IEnumerable<IFrameworkRunner> result;
+
+        Establish context = () =>
+            assemby = typeof(with_a_test_runner_resolver).Assembly;
+
+        Because of = () =>
+            result = subject.Resolve(assemby);
+
+        It should_return_a_result = () =>
+            result.ShouldNotBeEmpty();
+
+        It should_return_the_mspec_framework_runner = () =>
+            result.First().ShouldBeOfType<Giles.Runner.Machine.Specifications.SpecificationRunner>();
+    }
+
+    public class when_resolving_for_a_test_runner_and_an_assembly_is_not_passed
+        : with_a_test_runner_resolver
+    {
+        static Assembly assembly;
+        static IEnumerable<IFrameworkRunner> result;
+
+        Establish context = () =>
+            assembly = null;
+
+        Because of = () =>
+            result = subject.Resolve(assembly);
+
+        It should_return_an_empty_list_of_framework_runners = () =>
+            result.ShouldBeEmpty();
+    }
+}

src/Giles.Specs/Giles.Specs.csproj

@@ -56,6 +56,7 @@
     <Compile Include="Core\Runners\BuildRunnerSpecs.cs" />
     <Compile Include="Core\Runners\CommandProcessExecutorSpecs.cs" />
     <Compile Include="Core\Runners\FakeUserDisplay.cs" />
+    <Compile Include="Core\Runners\TestRunnerResolverSpecs.cs" />
     <Compile Include="Core\Runners\TestRunnerSpecs.cs" />
     <Compile Include="Core\Watchers\SourceWatcherSpecs.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -76,6 +77,10 @@
       <Project>{9039E7FA-989E-46ED-B031-FB67571E8385}</Project>
       <Name>Giles.Core</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Runners\Giles.Runner.Machine.Specifications\Giles.Runner.Machine.Specifications.csproj">
+      <Project>{88C6CC22-B9F2-41B8-8E4F-9500902AF874}</Project>
+      <Name>Giles.Runner.Machine.Specifications</Name>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.