diff --git a/unittest/parser/dune b/unittest/parser/dune
index 46dcbe1e..08c0e3e3 100644
--- a/unittest/parser/dune
+++ b/unittest/parser/dune
@@ -1,4 +1,5 @@
 (tests
  (names p1)
  (flags :standard -open Sidekick_util -open Sidekick_parser)
- (libraries sidekick.util sidekick.parser))
+ (package sidekick-parser)
+ (libraries sidekick.util sidekick-parser))
diff --git a/unittest/parser/p1.expected b/unittest/parser/p1.expected
index baa081a2..e3305f97 100644
--- a/unittest/parser/p1.expected
+++ b/unittest/parser/p1.expected
@@ -1,4 +1,13 @@
 t1: f (g x) y
-loc(t1): at line 0, column 0 - at line 0, column 9
-t2: let x := 1 in (f (f x 2))
-loc(t2): at line 0, column 0 - at line 0, column 21
+loc(t1): at line 1, column 0 - at line 1, column 9
+t2: let x := 1 in f (f x 2)
+loc(t2): at line 1, column 0 - at line 1, column 22
+t3: let l := map f (list 1 2 3) in let l2 := rev l in = (rev l2) l
+loc(t3): at line 1, column 1 - at line 1, column 61
+t4: let assm := ==> (is_foo p) (= (filter p l) nil) in true
+loc(t4): at line 1, column 0 - at line 1, column 51
+t5: let
+      f := lam (x : int) (y : int) (z : bool). (= (+ x y) z) and 
+      g := lam x. (f (f x)) in
+    is_g g
+loc(t5): at line 1, column 0 - at line 1, column 84
diff --git a/unittest/parser/p1.ml b/unittest/parser/p1.ml
index 46fc9339..6494c9ec 100644
--- a/unittest/parser/p1.ml
+++ b/unittest/parser/p1.ml
@@ -1,20 +1,24 @@
-module P = Parse_term
+module P = Parse_util
 module A = Ast_term
 
 (*
 let () = Printexc.record_backtrace true
 *)
+let () = Printexc.record_backtrace true
 
 let () =
   Printexc.register_printer (function
-    | Parser_comb.ParseError e -> Some (Parser_comb.Error.to_string e)
+    | P.Exn_parse_error e -> Some (P.Error.to_string e)
     | _ -> None)
 
 let test_str what s =
-  let t = P.of_string_exn s in
-
-  Fmt.printf "%s: %a@." what A.pp_term t;
-  Fmt.printf "loc(%s): %a@." what A.pp_loc (A.loc t)
+  let t = P.term_of_string s in
+  match t with
+  | Ok t ->
+    Fmt.printf "%s: %a@." what A.pp_term t;
+    Fmt.printf "loc(%s): %a@." what Loc.pp (A.loc t)
+  | Error err ->
+    Fmt.printf "FAIL:@ error while parsing %S:@ %a@." what P.Error.pp err
 
 let () = test_str "t1" "f (g x) y"
 let () = test_str "t2" "let x:= 1 in f (f x 2)"
@@ -23,5 +27,15 @@ let () =
   test_str "t3"
     {|
 let l := map f (list 1 2 3) in
-let l2 := rev l in eq (rev l2) l
+let l2 := rev l in rev l2 = l
+    |}
+
+let () =
+  test_str "t4" {|let assm := is_foo p ==> (filter p l = nil) in true
+    |}
+
+let () =
+  test_str "t5"
+    {|let f := fn (x y : int) (z:bool). ( x+ y) = z
+      and g := fn x. f (f x) in is_g g
     |}