Merge pull request #1587 from tsloughter/ct-compile-only

add compile_only option to ct provider

src/rebar_prv_common_test.erl

@@ -41,7 +41,14 @@ do(State) ->
     Tests = prepare_tests(State),
     case compile(State, Tests) of
         %% successfully compiled apps
-        {ok, S} -> do(S, Tests);
+        {ok, S} ->
+            {RawOpts, _} = rebar_state:command_parsed_args(S),
+            case proplists:get_value(compile_only, RawOpts, false) of
+                true ->
+                    {ok, S};
+                false ->
+                    do(S, Tests)
+            end;
         %% this should look like a compiler error, not a ct error
         Error   -> Error
     end.
@@ -743,9 +750,12 @@ ct_opts(_State) ->
      {name, undefined, "name", atom, help(name)},
      {sname, undefined, "sname", atom, help(sname)},
      {setcookie, undefined, "setcookie", atom, help(setcookie)},
-     {sys_config, undefined, "sys_config", string, help(sys_config)} %% comma-separated list
+     {sys_config, undefined, "sys_config", string, help(sys_config)}, %% comma-separated list
+     {compile_only, undefined, "compile_only", boolean, help(compile_only)}
     ].
 
+help(compile_only) ->
+    "Compile modules in the project with the test configuration but do not run the tests";
 help(dir) ->
     "List of additional directories containing test suites";
 help(suite) ->

test/rebar_ct_SUITE.erl

@@ -56,7 +56,8 @@
          testspec_at_root/1,
          testspec_parse_error/1,
          cmd_vs_cfg_opts/1,
-         single_testspec_in_ct_opts/1]).
+         single_testspec_in_ct_opts/1,
+         compile_only/1]).
 
 -include_lib("eunit/include/eunit.hrl").
 -include_lib("common_test/include/ct.hrl").
@@ -77,7 +78,8 @@ all() -> [{group, basic_app},
           testspec_at_root,
           testspec_parse_error,
           cmd_vs_cfg_opts,
-          single_testspec_in_ct_opts].
+          single_testspec_in_ct_opts,
+          compile_only].
 
 groups() -> [{basic_app, [], [basic_app_default_dirs,
                               basic_app_default_beams,
@@ -1585,6 +1587,22 @@ single_testspec_in_ct_opts(Config) ->
     ok = file:set_cwd(Wd),
     ok.
 
+compile_only(Config) ->
+    C = rebar_test_utils:init_rebar_state(Config, "compile_only_"),
+
+    AppDir = ?config(apps, C),
+
+    Name = rebar_test_utils:create_random_name(atom_to_list(basic_app) ++ "_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    Suite = filename:join([AppDir, "test", Name ++ "_SUITE.erl"]),
+    ok = filelib:ensure_dir(Suite),
+    ok = file:write_file(Suite, test_suite(Name)),
+
+    {ok, _State} = rebar_test_utils:run_and_check(C, [], ["ct", "--compile_only"], {ok, [{app,Name}], "test"}).
+
+
 %% helper for generating test data
 test_suite(Name) ->
     io_lib:format("-module(~ts_SUITE).\n"