diff --git a/source/ast/modulePath.ml b/source/ast/modulePath.ml
index 274b2e1b8b4..c7f88bb504d 100644
--- a/source/ast/modulePath.ml
+++ b/source/ast/modulePath.ml
@@ -185,14 +185,27 @@ let relative { raw = { Raw.relative; _ }; _ } = relative
 
 let is_in_project { is_external; _ } = not is_external
 
-let create_for_testing ~relative ~is_external ~priority =
-  let raw = Raw.{ relative; priority } in
+let create_from_raw_for_testing ~is_external ({ Raw.relative; _ } as raw) =
   let qualifier = qualifier_from_relative_path relative in
   let is_stub = PyrePath.is_path_python_stub relative in
   let is_init = PyrePath.is_path_python_init relative in
   { raw; qualifier; is_stub; is_external; is_init }
 
 
+let create_for_testing ~relative ~is_external ~priority =
+  let raw = Raw.{ relative; priority } in
+  create_from_raw_for_testing ~is_external raw
+
+
+let create_for_in_memory_scratch_project ~configuration ~relative ~is_external =
+  let raw =
+    let { Configuration.Analysis.local_root; _ } = configuration in
+    let path_in_local_root = PyrePath.create_relative ~root:local_root ~relative in
+    Raw.create ~configuration (ArtifactPath.create path_in_local_root) |> Option.value_exn
+  in
+  create_from_raw_for_testing ~is_external raw
+
+
 let full_path ~configuration { raw; _ } = Raw.full_path ~configuration raw
 
 (* NOTE: This comparator is expected to operate on SourceFiles that are mapped to the same module
diff --git a/source/ast/modulePath.mli b/source/ast/modulePath.mli
index 0dc550fdda8..ea369e2dbdb 100644
--- a/source/ast/modulePath.mli
+++ b/source/ast/modulePath.mli
@@ -44,6 +44,12 @@ val relative : t -> string
 
 val is_in_project : t -> bool
 
+val create_for_in_memory_scratch_project
+  :  configuration:Configuration.Analysis.t ->
+  relative:string ->
+  is_external:bool ->
+  t
+
 val create_for_testing : relative:string -> is_external:bool -> priority:int -> t
 
 val qualifier_from_relative_path : string -> Reference.t
diff --git a/source/test/test.ml b/source/test/test.ml
index d708f585551..4847615c806 100644
--- a/source/test/test.ml
+++ b/source/test/test.ml
@@ -3065,7 +3065,9 @@ module ScratchProject = struct
         let in_memory_sources =
           let to_in_memory_source (relative, content) ~is_external =
             let code = trim_extra_indentation content in
-            let module_path = ModulePath.create_for_testing ~relative ~is_external ~priority:1 in
+            let module_path =
+              ModulePath.create_for_in_memory_scratch_project ~configuration ~relative ~is_external
+            in
             module_path, code
           in
           List.map sources ~f:(to_in_memory_source ~is_external:false)