Fix up programmatic interface to rebar3

Now supports arbitrary commands

src/rebar3.erl

@@ -71,10 +71,10 @@ main(Args) ->
     end.
 
 %% Erlang-API entry point
-run(BaseState, Command) ->
+run(BaseState, Commands) ->
     _ = application:load(rebar),
-    BaseState1 = rebar_state:set(BaseState, task, Command),
-    run_aux(BaseState1, [], [Commandspan>]).
+    BaseState1 = rebar_state:set(BaseState, task, Commands),
+    run_aux(BaseState1, [], Commands).
 
 %% ====================================================================
 %% Internal functions

test/rebar_compile_SUITE.erl

@@ -33,5 +33,5 @@ build_basic_app(Config) ->
     Vsn = rebar_test_utils:create_random_vsn(),
     rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
 
-    rebar_test_utils:run_and_check(Config, [], "compile", {ok, [{app, Name}]}).
+    rebar_test_utils:run_and_check(Config, [], ["compile"], {ok, [{app, Name}]}).
 

test/rebar_deps_SUITE.erl

@@ -195,7 +195,7 @@ circular_skip(Config) -> run(Config).
 run(Config) ->
     {ok, RebarConfig} = file:consult(?config(rebarconfig, Config)),
     rebar_test_utils:run_and_check(
-        Config, RebarConfig, "install_deps", ?config(expect, Config)
+        Config, RebarConfig, ["install_deps"], ?config(expect, Config)
     ),
     check_warnings(warning_calls(), ?config(warnings, Config), ?config(deps_type, Config)).