unikernel/duniverse/dune_/test/blackbox-tests/test-cases/melange/reused-module.t

@@ -0,0 +1,31 @@
+Test error message for modules belonging to melange.emit and another stanza
+
+  $ cat > dune-project <<EOF
+  > (lang dune 3.8)
+  > (using melange 0.1)
+  > EOF
+
+  $ cat > dune <<EOF
+  > (library
+  >  (name lib)
+  >  (modes melange))
+  > (melange.emit
+  >  (emit_stdlib false)
+  >  (target output))
+  > EOF
+
+  $ cat > main.ml <<EOF
+  > let () =
+  >   print_endline "hello"
+  > EOF
+
+  $ dune build output/main.js
+  File "dune", line 1, characters 0-0:
+  Error: Module "Main" is used in several stanzas:
+  - dune:1
+  - dune:4
+  To fix this error, you must specify an explicit "modules" field in every
+  library, executable, and executables stanzas in this dune file. Note that
+  each module cannot appear in more than one "modules" field - it must belong
+  to a single library or executable.
+  [1]