Fix bug 271

Moves ct_extra_params to the end of the generated ct_run command.
This allows users to pass commands to the underlying emulator
using -erl_args. The included rt test demonstrates that it is
possible to pass an addtional option to ct_run and -erl_args at
the same time. Finally, the test executes in regular and verbose
modes because rebar constructs the ct_run command differently in
verbose mode.

THANKS

@@ -120,3 +120,4 @@ Pedram Nimreezi
 Sylvain Benner
 Oliver Ferrigni
 Dave Thomas
+Drew Varner

inttest/ct1/app.config

@@ -0,0 +1,2 @@
+%% This file is an application config file, not a CT test config file
+[{a1, [{foo, bar}]}].

inttest/ct1/ct1_rt.erl

@@ -7,10 +7,12 @@ files() ->
     [{create, "ebin/a1.app", app(a1)},
      {copy, "../../rebar", "rebar"},
      {copy, "rebar.config", "rebar.config"},
+     {copy, "app.config", "app.config"},
      {copy, "test_SUITE.erl", "itest/test_SUITE.erl"}].
 
 run(_Dir) ->
     {ok, _} = retest:sh("./rebar compile ct"),
+    {ok, _} = retest:sh("./rebar compile ct -v"),
     ok.
 
 

inttest/ct1/rebar.config

@@ -1 +1,2 @@
 {ct_dir, "itest"}.
+{ct_extra_params, "-repeat 2 -erl_args -config app"}.

inttest/ct1/test_SUITE.erl

@@ -5,7 +5,13 @@
 -include_lib("ct.hrl").
 
 all() ->
-    [simple_test].
+    [simple_test,
+     app_config_file_test].
 
 simple_test(Config) ->
     io:format("Test: ~p\n", [Config]).
+
+app_config_file_test(_Config) ->
+    application:start(a1),
+    {ok, bar} = application:get_env(a1, foo),
+    application:stop(a1).

src/rebar_ct.erl

@@ -217,15 +217,13 @@ make_cmd(TestDir, RawLogDir, Config) ->
                        " ~s"
                        " ~s"
                        " -logdir \"~s\""
-                       " -env TEST_DIR \"~s\""
+                       " -env TEST_DIR \"~s\"",
-                       " ~s",
                        [BaseCmd,
                         CodePathString,
                         Include,
                         build_name(Config),
                         LogDir,
-                        filename:join(Cwd, TestDir),
+                        filename:join(Cwd, TestDir)]) ++
-                        get_extra_params(Config)]) ++
                       get_cover_config(Config, Cwd) ++
                       get_ct_config_file(TestDir) ++
                       get_config_file(TestDir) ++
@@ -237,19 +235,18 @@ make_cmd(TestDir, RawLogDir, Config) ->
                        " ~s"
                        " ~s"
                        " -logdir \"~s\""
-                       " -env TEST_DIR \"~s\""
+                       " -env TEST_DIR \"~s\"",
-                       " ~s",
                        [BaseCmd,
                         CodePathString,
                         Include,
                         build_name(Config),
                         LogDir,
-                        filename:join(Cwd, TestDir),
+                        filename:join(Cwd, TestDir)]) ++
-                        get_extra_params(Config)]) ++
                       SpecFlags ++ get_cover_config(Config, Cwd)
           end,
+    Cmd1 = Cmd ++ get_extra_params(Config),
     RawLog = filename:join(LogDir, "raw.log"),
-    {Cmd, RawLog}.
+    {Cmd1, RawLog}.
 
 build_name(Config) ->
     case rebar_config:get_local(Config, ct_use_short_names, false) of
@@ -258,7 +255,12 @@ build_name(Config) ->
     end.
 
 get_extra_params(Config) ->
-    rebar_config:get_local(Config, ct_extra_params, "").
+    case rebar_config:get_local(Config, ct_extra_params, undefined) of
+        undefined ->
+            "";
+        Defined ->
+            " " ++ Defined
+    end.
 
 get_ct_specs(Cwd) ->
     case collect_glob(Cwd, ".*\.test\.spec\$") of