Add actual test suite for configurator

test/blackbox-tests/jbuild

@@ -459,3 +459,13 @@
     (progn
      (run ${exe:cram.exe} run.t)
      (diff? run.t run.t.corrected))))))
+
+(alias
+ ((name runtest)
+  (deps ((package jbuilder)
+         (files_recursively_in test-cases/configurator)))
+  (action
+   (chdir test-cases/configurator
+    (progn
+     (run ${exe:cram.exe} run.t)
+     (diff? run.t run.t.corrected))))))

test/blackbox-tests/test-cases/configurator/config/jbuild

@@ -0,0 +1,5 @@
+(jbuild_version 1)
+
+(executable
+ ((name run)
+  (libraries (jbuilder.configurator))))

test/blackbox-tests/test-cases/configurator/config/run.ml

@@ -0,0 +1,6 @@
+let () =
+  Configurator.main ~name:"config" (fun t ->
+    match Configurator.ocaml_config_var t "version" with
+    | None -> failwith "version is absent"
+    | Some _ -> print_endline "version is present"
+  )

test/blackbox-tests/test-cases/configurator/run.t

@@ -0,0 +1,2 @@
+  $ jbuilder exec config/run.exe
+  version is present