Sub Test_App_RegisterAndResolveService()
    Dim app

    Set app = New App
    app.RegisterInstance "widget", New FakeService

    AssertTrue app.HasService("widget"), "HasService should be True after RegisterInstance"
    AssertNotNothing app.Resolve("widget"), "Resolve should return the registered object"
End Sub

Sub Test_App_ResolveUnregisteredServiceRaises()
    Dim app
    Dim result
    Dim didRaise

    Set app = New App
    didRaise = False

    On Error Resume Next
    Err.Clear
    Set result = app.Resolve("does-not-exist")
    If Err.Number <> 0 Then didRaise = True
    Err.Clear
    On Error Goto 0

    AssertTrue didRaise, "Resolve should raise when the service isn't registered"
End Sub

Sub Test_App_ServiceNamesReflectsRegistered()
    Dim app
    Dim names

    Set app = New App
    app.RegisterInstance "alpha", New FakeService
    app.RegisterInstance "beta", New FakeService

    names = app.ServiceNames()

    AssertEquals 2, UBound(names) + 1, "ServiceNames should return one entry per registered service"
End Sub

Sub Test_App_RegisterInstanceReplacesExisting()
    Dim app
    Dim first
    Dim second
    Dim resolved
    Dim names

    Set app = New App
    Set first = New FakeService
    Set second = New FakeService
    first.Marker = "first"
    second.Marker = "second"

    app.RegisterInstance "svc", first
    app.RegisterInstance "svc", second

    names = app.ServiceNames()
    AssertEquals 1, UBound(names) + 1, "Re-registering the same name should not duplicate it"

    Set resolved = app.Resolve("svc")
    AssertEquals "second", resolved.Marker, "Resolve should return the most recently registered instance"
End Sub

Sub Test_App_BootPrefersOriginalUrlOverPathInfo()
    Dim app
    Dim httpRequest
    Dim fakeRequest

    Set fakeRequest = New FakeAspRequest
    fakeRequest.SetServerVariable "REQUEST_METHOD", "GET"
    fakeRequest.SetServerVariable "SERVER_NAME", "localhost"
    fakeRequest.SetServerVariable "SERVER_PORT", "8080"
    fakeRequest.SetServerVariable "PATH_INFO", "/Default.asp"
    fakeRequest.SetServerVariable "HTTP_X_ORIGINAL_URL", "/greet/Ada?x=1"

    Set httpRequest = New HttpRequest
    httpRequest.Bind fakeRequest

    Set app = New App
    app.SetRequest httpRequest
    app.Boot

    AssertEquals "/greet/Ada", app.Route, "Route should come from HTTP_X_ORIGINAL_URL (query string stripped), not PATH_INFO"
End Sub

Sub Test_App_BootFallsBackToPathInfoWhenOriginalUrlMissing()
    Dim app
    Dim httpRequest
    Dim fakeRequest

    Set fakeRequest = New FakeAspRequest
    fakeRequest.SetServerVariable "REQUEST_METHOD", "GET"
    fakeRequest.SetServerVariable "SERVER_NAME", "localhost"
    fakeRequest.SetServerVariable "SERVER_PORT", "8080"
    fakeRequest.SetServerVariable "PATH_INFO", "/greet/Ada"

    Set httpRequest = New HttpRequest
    httpRequest.Bind fakeRequest

    Set app = New App
    app.SetRequest httpRequest
    app.Boot

    AssertEquals "/greet/Ada", app.Route, "Route should fall back to PATH_INFO when HTTP_X_ORIGINAL_URL is absent"
End Sub

Sub Test_App_BootNormalizesDefaultAspToRoot()
    Dim app
    Dim httpRequest
    Dim fakeRequest

    Set fakeRequest = New FakeAspRequest
    fakeRequest.SetServerVariable "REQUEST_METHOD", "GET"
    fakeRequest.SetServerVariable "SERVER_NAME", "localhost"
    fakeRequest.SetServerVariable "SERVER_PORT", "8080"
    fakeRequest.SetServerVariable "HTTP_X_ORIGINAL_URL", "/Default.asp"

    Set httpRequest = New HttpRequest
    httpRequest.Bind fakeRequest

    Set app = New App
    app.SetRequest httpRequest
    app.Boot

    AssertEquals "/", app.Route, "Both PATH_INFO and HTTP_X_ORIGINAL_URL '/Default.asp' should normalize to '/'"
End Sub

Sub Test_App_BootRequiresRequestToBeSet()
    Dim app
    Dim didRaise

    Set app = New App
    didRaise = False

    On Error Resume Next
    Err.Clear
    app.Boot
    If Err.Number <> 0 Then didRaise = True
    Err.Clear
    On Error Goto 0

    AssertTrue didRaise, "Boot should raise if SetRequest was never called"
End Sub

RunTest "App: register + resolve a service", "Test_App_RegisterAndResolveService"
RunTest "App: resolving an unregistered service raises", "Test_App_ResolveUnregisteredServiceRaises"
RunTest "App: ServiceNames reflects registered services", "Test_App_ServiceNamesReflectsRegistered"
RunTest "App: re-registering a name replaces, does not duplicate", "Test_App_RegisterInstanceReplacesExisting"
RunTest "App: Boot prefers HTTP_X_ORIGINAL_URL over PATH_INFO", "Test_App_BootPrefersOriginalUrlOverPathInfo"
RunTest "App: Boot falls back to PATH_INFO when original URL is absent", "Test_App_BootFallsBackToPathInfoWhenOriginalUrlMissing"
RunTest "App: Boot normalizes '/Default.asp' to '/'", "Test_App_BootNormalizesDefaultAspToRoot"
RunTest "App: Boot requires a bound request", "Test_App_BootRequiresRequestToBeSet"