unikernel/duniverse/dune_/test/expect-tests/digest/digest_tests.ml

@@ -0,0 +1,39 @@
+open Stdune
+module Digest = Dune_digest
+
+let%expect_test "directory digest version" =
+  (* If this test fails with a new digest value, make sure to update
+     [directory_digest_version] in digest.ml.
+
+     The expected value is kept outside of the expect block on purpose so that it
+     must be modified manually. *)
+  let expected = "b8103f74615da82331f53c68145085fc" in
+  let dir = Temp.create Dir ~prefix:"digest-tests" ~suffix:"" in
+  let stats = { Digest.Stats_for_digest.st_kind = S_DIR; executable = true } in
+  (match Digest.path_with_stats ~allow_dirs:true dir stats with
+   | Ok digest ->
+     let digest = Digest.to_string digest in
+     if String.equal digest expected
+     then print_endline "[PASS]"
+     else
+       printfn
+         "[FAIL] new digest value. please update the version and this test.\n%s"
+         digest
+   | Error (Unexpected_kind | Unix_error _) ->
+     print_endline "[FAIL] unable to calculate digest");
+  [%expect {| [PASS] |}]
+;;
+
+let%expect_test "directories with symlinks" =
+  let dir = Temp.create Dir ~prefix:"digest-tests" ~suffix:"" in
+  let stats = { Digest.Stats_for_digest.st_kind = S_DIR; executable = true } in
+  let sub = Path.relative dir "sub" in
+  Path.mkdir_p sub;
+  Unix.symlink "bar" (Path.to_string (Path.relative dir "foo"));
+  Unix.symlink "bar" (Path.to_string (Path.relative sub "foo"));
+  (match Digest.path_with_stats ~allow_dirs:true dir stats with
+   | Ok _ -> print_endline "[PASS]"
+   | Error Unexpected_kind -> print_endline "[FAIL] unexpected kind"
+   | Error (Unix_error _) -> print_endline "[FAIL] unable to calculate digest");
+  [%expect {| [PASS] |}]
+;;