Logger support in cth_readable; compact CT output

cth_readable 1.4.0 supports the new logger interface from OTP-21, which
likely breaks compatibility with R16 builds.

It also includes a new compact interface, displaying output such as:

    ===> Running Common Test suites...
    %%% rebar_alias_SUITE: ......
    %%% rebar_as_SUITE: ...........
    %%% rebar_compile_SUITE:................................
    ............................
    %%% rebar_compile_SUITE ==> test_name: SKIPPED
    %%% rebar_compile_SUITE ==>
    {tc_user_skip,"compile:env_compiler_options/0 available"}
    ..
    %%% rebar_cover_SUITE: .............
    %%% rebar_ct_SUITE: ....................................

Allowing to display more tests within less screen space.
This mode has been added to the ct_readable option under the name
'compact' (now supporting true | false | compact), and has been made
default for rebar3.

rebar.config

@@ -9,7 +9,7 @@
         {bbmustache,          "1.3.0"},
         {relx,                "3.24.4"},
         {cf,                  "0.2.2"},
-        {cth_readable,        "1.3.4"},
+        {cth_readable,        "1.4.0"},
         {eunit_formatters,    "0.5.0"}]}.
 
 {post_hooks, [{"(linux|darwin|solaris|freebsd|netbsd|openbsd)",

rebar.lock

@@ -2,7 +2,7 @@
 [{<<"bbmustache">>,{pkg,<<"bbmustache">>,<<"1.3.0">>},0},
  {<<"certifi">>,{pkg,<<"certifi">>,<<"2.0.0">>},0},
  {<<"cf">>,{pkg,<<"cf">>,<<"0.2.2">>},0},
- {<<"cth_readable">>,{pkg,<<"cth_readable">>,<<"1.3.4">>},0},
+ {<<"cth_readable">>,{pkg,<<"cth_readable">>,<<"1.4.0">>},0},
  {<<"erlware_commons">>,{pkg,<<"erlware_commons">>,<<"1.1.0">>},0},
  {<<"eunit_formatters">>,{pkg,<<"eunit_formatters">>,<<"0.5.0">>},0},
  {<<"getopt">>,{pkg,<<"getopt">>,<<"1.0.1">>},0},
@@ -14,7 +14,7 @@
  {<<"bbmustache">>, <<"2010ADAE78830992A4C69680115ECD7D475DD03A72C076BBADDCCBF2D4B32035">>},
  {<<"certifi">>, <<"A0C0E475107135F76B8C1D5BC7EFB33CD3815CB3CF3DEA7AEFDD174DABEAD064">>},
  {<<"cf">>, <<"7F2913FFF90ABCABD0F489896CFEB0B0674F6C8DF6C10B17A83175448029896C">>},
- {<<"cth_readable">>, <<"CB85DF77CEB7F05854AE241300DB36A72C371740EDD883D8BF75B5F652B7067D">>},
+ {<<"cth_readable">>, <<"F51362E3D365B14DE5AED7E98166E0643F38D004AF9750369D8F90E9F470FCC7">>},
  {<<"erlware_commons">>, <<"F69F3D96044C2A9E735CCD76F469FEC5FC851797E5FE23115698B4EDC072191B">>},
  {<<"eunit_formatters">>, <<"6A9133943D36A465D804C1C5B6E6839030434B8879C5600D7DDB5B3BAD4CCB59">>},
  {<<"getopt">>, <<"C73A9FA687B217F2FF79F68A3B637711BB1936E712B521D8CE466B29CBF7808A">>},

src/rebar_prv_common_test.erl

@@ -227,15 +227,20 @@ add_hooks(Opts, State) ->
     case {readable(State), lists:keyfind(ct_hooks, 1, Opts)} of
         {false, _} ->
             Opts;
-        {true, false} ->
-            [{ct_hooks, [cth_readable_failonly, cth_readable_shell, cth_retry]} | Opts];
-        {true, {ct_hooks, Hooks}} ->
+        {Other, false} ->
+            [{ct_hooks, [cth_readable_failonly, readable_shell_type(Other), cth_retry]} | Opts];
+        {Other, {ct_hooks, Hooks}} ->
             %% Make sure hooks are there once only.
-            ReadableHooks = [cth_readable_failonly, cth_readable_shell, cth_retry],
-            NewHooks =  (Hooks -- ReadableHooks) ++ ReadableHooks,
+            ReadableHooks = [cth_readable_failonly, readable_shell_type(Other), cth_retry],
+            AllReadableHooks = [cth_readable_failonly, cth_retry,
+                                cth_readable_shell, cth_readable_compact_shell],
+            NewHooks =  (Hooks -- AllReadableHooks) ++ ReadableHooks,
             lists:keyreplace(ct_hooks, 1, Opts, {ct_hooks, NewHooks})
     end.
 
+readable_shell_type(true) -> cth_readable_shell;
+readable_shell_type(compact) -> cth_readable_compact_shell.
+
 select_tests(_, _, _, {error, _} = Error) -> Error;
 select_tests(State, ProjectApps, CmdOpts, CfgOpts) ->
     %% set application env if sys_config argument is provided
@@ -425,20 +430,21 @@ append(A, B) -> A ++ B.
 
 add_transforms(CTOpts, State) when is_list(CTOpts) ->
     case readable(State) of
-        true ->
-            ReadableTransform = [{parse_transform, cth_readable_transform}],
-            (CTOpts -- ReadableTransform) ++ ReadableTransform;
         false ->
-            CTOpts
+            CTOpts;
+        Other when Other == true; Other == compact ->
+            ReadableTransform = [{parse_transform, cth_readable_transform}],
+            (CTOpts -- ReadableTransform) ++ ReadableTransform
     end;
 add_transforms({error, _} = Error, _State) -> Error.
 
 readable(State) ->
     {RawOpts, _} = rebar_state:command_parsed_args(State),
     case proplists:get_value(readable, RawOpts) of
-        true  -> true;
-        false -> false;
-        undefined -> rebar_state:get(State, ct_readable, true)
+        "true"  -> true;
+        "false" -> false;
+        "compact" -> compact;
+        undefined -> rebar_state:get(State, ct_readable, compact)
     end.
 
 test_dirs(State, Apps, Opts) ->
@@ -762,7 +768,7 @@ ct_opts(_State) ->
      {scale_timetraps, undefined, "scale_timetraps", boolean, help(scale_timetraps)},
      {create_priv_dir, undefined, "create_priv_dir", string, help(create_priv_dir)},
      {include, undefined, "include", string, help(include)},
-     {readable, undefined, "readable", boolean, help(readable)},
+     {readable, undefined, "readable", string, help(readable)},
      {verbose, $v, "verbose", boolean, help(verbose)},
      {name, undefined, "name", atom, help(name)},
      {sname, undefined, "sname", atom, help(sname)},
@@ -831,7 +837,7 @@ help(create_priv_dir) ->
 help(include) ->
     "Directories containing additional include files";
 help(readable) ->
-    "Shows test case names and only displays logs to shell on failures";
+    "Shows test case names and only displays logs to shell on failures (true | compact | false)";
 help(verbose) ->
     "Verbose output";
 help(name) ->