Integration test (#39)

* added end2end integration test via FAKE

* specified the MSBuild configuration in the integration test

* log all of the detected branch names

* give origin/dev a try

* added work-around for CI servers

Author: Aaronontheweb

build.fsx

@@ -115,6 +115,29 @@ Target "RunTests" (fun _ ->
     projects |> Seq.iter (runSingleProject)
 )
 
+Target "IntegrationTests" <| fun _ ->    
+    let integrationTests = !! "./src/**/Incrementalist.Cmd.csproj"
+
+    let runSingleProject project =
+        
+        let folderOnlyArgs = sprintf "run --project %s -c %s --no-build -- -b dev -l" project configuration
+        let slnArgs = sprintf "run --project %s -c %s --no-build -- -b dev" project configuration
+
+        let execWithArgs args =
+            let result = ExecProcess(fun info ->
+                info.FileName <- "dotnet"
+                info.WorkingDirectory <- __SOURCE_DIRECTORY__
+                info.Arguments <- args) (TimeSpan.FromMinutes 5.0) 
+            if result <> 0 then failwithf "Incrementalist failed.%s" args
+        
+        log "Running Incrementalist folders-only check"
+        execWithArgs folderOnlyArgs
+
+        log "Running Incrementalist solution check"
+        execWithArgs slnArgs
+
+    integrationTests |> Seq.iter runSingleProject
+
 Target "NBench" <| fun _ ->
     let projects = 
         match (isWindows) with 
@@ -311,6 +334,7 @@ Target "Nuget" DoNothing
 
 // all
 "BuildRelease" ==> "All"
+"IntegrationTests" ==> "All"
 "RunTests" ==> "All"
 "NBench" ==> "All"
 "Nuget" ==> "All"

src/Incrementalist.Cmd/Program.cs

@@ -95,11 +95,21 @@ private static async Task<int> RunIncrementalist(SlnOptions options)
                 // validate the target branch
                 if (!DiffHelper.HasBranch(repoResult.repo, options.GitBranch))
                 {
-                    Console.WriteLine("Current git repository doesn't have any branch named [{0}]. Shutting down.", options.GitBranch);
-                    return -4;
+                    // workaround common CI server issues and check to see if this same branch is located
+                    // under "origin/{branchname}"
+                    options.GitBranch = $"origin/{options.GitBranch}";
+                    if (!DiffHelper.HasBranch(repoResult.repo, options.GitBranch))
+                    {
+                        Console.WriteLine("Current git repository doesn't have any branch named [{0}]. Shutting down.", options.GitBranch);
+                        Console.WriteLine("[Debug] Here are all of the currently known branches in this repository");
+                        foreach (var b in repoResult.repo.Branches)
+                        {
+                            Console.WriteLine(b.FriendlyName);
+                        }
+                        return -4;
+                    }
                 }
 
-
                 if (!string.IsNullOrEmpty(repoFolder))
                 {
                     if (options.ListFolders)