unikernel/duniverse/dune_/test/blackbox-tests/test-cases/github9176.t

@@ -0,0 +1,42 @@
+We check that `version = ""` in META files are correctly handled.
+
+  $ export OPAM_SWITCH_PREFIX=`pwd`/opam-switch
+  $ mkdir -p $OPAM_SWITCH_PREFIX/lib/mylib
+
+  $ cat > $OPAM_SWITCH_PREFIX/lib/mylib/META << EOF
+  > version=""
+  > EOF
+
+  $ cat > dune-project << EOF
+  > (lang dune 1.0)
+  > EOF
+
+  $ cat > dune << EOF
+  > (executable
+  >  (name e)
+  >  (libraries dune-build-info mylib))
+  > EOF
+
+  $ cat > e.ml << 'EOF'
+  > let () =
+  >   let open Build_info.V1 in
+  >   let s =
+  >     match Statically_linked_libraries.find ~name:"mylib" with
+  >     | None -> "no lib"
+  >     | Some l ->
+  >       begin
+  >         match Statically_linked_library.version l with
+  >         | Some v when Version.to_string v = "" -> "empty string"
+  >         | Some _ -> "other string"
+  >         | None -> "no version"
+  >       end
+  >   in
+  >   print_endline s
+  > EOF
+
+  $ dune build
+
+In dune 3.11 and earlier, we would return "empty string" here.
+
+  $ dune exec ./e.exe
+  no version