generate cover data (via the `{cover_enabled, true}` option in

`rebar.config` or via the `-c\--cover` flag given to the appropriate
task) from the `eunit` and `ct` tasks and add a `cover` task to
write coverage analysis to disk

1 files changed, 127 insertions, 0 deletions

diff --git a/test/rebar_cover_SUITE.erl b/test/rebar_cover_SUITE.erl
new file mode 100644
index 0000000..c719982
--- /dev/null
+++ b/test/rebar_cover_SUITE.erl
@@ -0,0 +1,127 @@
+-module(rebar_cover_SUITE).
+
+-export([suite/0,
+         init_per_suite/1,
+         end_per_suite/1,
+         init_per_testcase/2,
+         all/0,
+         flag_coverdata_written/1,
+         config_coverdata_written/1,
+         index_written/1,
+         config_alt_coverdir/1,
+         flag_verbose/1,
+         config_verbose/1]).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("eunit/include/eunit.hrl").
+-include_lib("kernel/include/file.hrl").
+
+suite() ->
+    [].
+
+init_per_suite(Config) ->
+    Config.
+
+end_per_suite(_Config) ->
+    ok.
+
+init_per_testcase(_, Config) ->
+    rebar_test_utils:init_rebar_state(Config, "cover_").
+
+all() ->
+    [flag_coverdata_written, config_coverdata_written,
+     index_written,
+     config_alt_coverdir,
+     flag_verbose, config_verbose].
+
+flag_coverdata_written(Config) ->
+    AppDir = ?config(apps, Config),
+
+    Name = rebar_test_utils:create_random_name("cover_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    RebarConfig = [{erl_opts, [{d, some_define}]}],
+    rebar_test_utils:run_and_check(Config,
+                                   RebarConfig,
+                                   ["eunit", "--cover"],
+                                   {ok, [{app, Name}]}),
+
+    true = filelib:is_file(filename:join(["_cover", "eunit.coverdata"])).
+
+config_coverdata_written(Config) ->
+    AppDir = ?config(apps, Config),
+
+    Name = rebar_test_utils:create_random_name("cover_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    RebarConfig = [{erl_opts, [{d, some_define}]}, {cover_enabled, true}],
+    rebar_test_utils:run_and_check(Config,
+                                   RebarConfig,
+                                   ["eunit"],
+                                   {ok, [{app, Name}]}),
+
+    true = filelib:is_file(filename:join(["_cover", "eunit.coverdata"])).
+
+index_written(Config) ->
+    AppDir = ?config(apps, Config),
+
+    Name = rebar_test_utils:create_random_name("cover_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    RebarConfig = [{erl_opts, [{d, some_define}]}],
+    rebar_test_utils:run_and_check(Config,
+                                   RebarConfig,
+                                   ["do", "eunit", "--cover", ",", "cover"],
+                                   {ok, [{app, Name}]}),
+
+    true = filelib:is_file(filename:join(["_cover", "index.html"])).
+
+config_alt_coverdir(Config) ->
+    AppDir = ?config(apps, Config),
+
+    Name = rebar_test_utils:create_random_name("cover_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    CoverDir = filename:join(["coverage", "goes", "here"]),
+
+    RebarConfig = [{erl_opts, [{d, some_define}]}, {cover_data_dir, CoverDir}],
+    rebar_test_utils:run_and_check(Config,
+                                   RebarConfig,
+                                   ["do", "eunit", "--cover", ",", "cover"],
+                                   {ok, [{app, Name}]}),
+
+    true = filelib:is_file(filename:join([CoverDir, "index.html"])).
+
+flag_verbose(Config) ->
+    AppDir = ?config(apps, Config),
+
+    Name = rebar_test_utils:create_random_name("cover_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    RebarConfig = [{erl_opts, [{d, some_define}]}],
+    rebar_test_utils:run_and_check(Config,
+                                   RebarConfig,
+                                   ["do", "eunit", "--cover", ",", "cover", "--verbose"],
+                                   {ok, [{app, Name}]}),
+
+    true = filelib:is_file(filename:join(["_cover", "index.html"])).
+
+config_verbose(Config) ->
+    AppDir = ?config(apps, Config),
+
+    Name = rebar_test_utils:create_random_name("cover_"),
+    Vsn = rebar_test_utils:create_random_vsn(),
+    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
+
+    RebarConfig = [{erl_opts, [{d, some_define}]}, {cover_print_enabled, true}],
+    rebar_test_utils:run_and_check(Config,
+                                   RebarConfig,
+                                   ["do", "eunit", "--cover", ",", "cover"],
+                                   {ok, [{app, Name}]}),
+
+    true = filelib:is_file(filename:join(["_cover", "index.html"])).