Add test for using a dune library with ocamlfind

Signed-off-by: Rudi Grinberg <rudi.grinberg@gmail.com>

test/blackbox-tests/dune.inc

@@ -492,6 +492,14 @@
     test-cases/select
     (progn (run ${exe:cram.exe} -test run.t) (diff? run.t run.t.corrected))))))
 
+(alias
+ ((name use-meta)
+  (deps ((package dune) (files_recursively_in test-cases/use-meta)))
+  (action
+   (chdir
+    test-cases/use-meta
+    (progn (run ${exe:cram.exe} -test run.t) (diff? run.t run.t.corrected))))))
+
 (alias
  ((name utop)
   (deps ((package dune) (files_recursively_in test-cases/utop)))
@@ -558,6 +566,7 @@
     (alias scope-bug)
     (alias scope-ppx-bug)
     (alias select)
+    (alias use-meta)
     (alias utop)))))
 
 (alias
@@ -609,7 +618,8 @@
     (alias redirections)
     (alias scope-bug)
     (alias scope-ppx-bug)
-    (alias select)))))
+    (alias select)
+    (alias use-meta)))))
 
 (alias ((name runtest-disabled) (deps ((alias reason)))))
 

test/blackbox-tests/test-cases/use-meta/foobarlib/dune

@@ -0,0 +1,4 @@
+(library
+ ((name foobarlib)
+  (public_name foobarlib)
+  (libraries (str))))

test/blackbox-tests/test-cases/use-meta/foobarlib/foobarlib.ml

@@ -0,0 +1,4 @@
+open Str
+
+let foo () =
+  print_endline "foobarlib"

test/blackbox-tests/test-cases/use-meta/main.ml

@@ -0,0 +1 @@
+let () = Foobarlib.foo ()

test/blackbox-tests/test-cases/use-meta/run.t

@@ -0,0 +1,2 @@
+  $ dune build && dune exec -- ocamlfind opt -package foobarlib -linkpkg main.ml -o main.exe && ./main.exe
+  foobarlib