format test file

test/test.sml

@@ -6,19 +6,18 @@ val emptyVec = Vector.fromList []
 
 val cursorTests = describe "cursor operations"
   [ test "'l' moves cursor leftward by one when cursorIdx < length" (fn _ =>
-  let
-    (* arrange *)
-    val buffer = LineGap.fromString "hello world"
-    val app = AppType.init (buffer, 0, 0)
+      let
+        (* arrange *)
+        val buffer = LineGap.fromString "hello world"
+        val app = AppType.init (buffer, 0, 0)
 
-    (* act *)
+        (* act *)
         val ({cursorIdx, ...}, _) = AppUpdate.update (app, CHAR_EVENT #"l")
 
-    (* assert *)
-  in
-    Expect.isTrue (cursorIdx = 1)
-  end
-  )
+      (* assert *)
+      in
+        Expect.isTrue (cursorIdx = 1)
+      end)
 
   , test "'w' moves cursor to start of next word in contiguous string" (fn _ =>
       let