summaryrefslogtreecommitdiff
path: root/test/rebar_eunit_tests.erl
blob: 21870911fcf8d6a6f56c4a1d3b78534ffc02e27b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
%% -*- tab-width: 4;erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009, 2010 Dave Smith (dizzyd@dizzyd.com)
%%
%% Permission is hereby granted, free of charge, to any person obtaining a copy
%% of this software and associated documentation files (the "Software"), to deal
%% in the Software without restriction, including without limitation the rights
%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%% copies of the Software, and to permit persons to whom the Software is
%% furnished to do so, subject to the following conditions:
%%
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%%
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
%% THE SOFTWARE.
%% -------------------------------------------------------------------
%% @author Chris Bernard <cebernard@gmail.com>
%% @doc This tests functionality provided by the rebar command 'eunit'.
%% @copyright 2009, 2010 Dave Smith
%% -------------------------------------------------------------------
-module(rebar_eunit_tests).

-compile(export_all).

-include_lib("eunit/include/eunit.hrl").

%% Assuming this test is run inside the rebar 'eunit'
%% command, the current working directory will be '.eunit'
-define(REBAR_SCRIPT, "../rebar").

-define(TMP_DIR, "tmp_eunit/").

%% ====================================================================
%% Rebar EUnit and Cover Tests
%% ====================================================================

eunit_test_() ->
    {"Ensure EUnit runs with tests in a 'test' dir and no defined suite",
     setup, fun() -> setup_basic_project(), rebar("-v eunit") end,
     fun teardown/1,
     fun(RebarOut) ->
             [{"Tests in 'test' directory are found and run",
               ?_assert(string:str(RebarOut, "myapp_mymod_tests:") =/= 0)},
              
              {"Tests in 'src' directory are found and run",
               ?_assert(string:str(RebarOut, "myapp_mymod:") =/= 0)},
              
              {"Tests are only run once",
               ?_assert(string:str(RebarOut, "All 2 tests passed") =/= 0)}]
     end}. 

cover_test_() ->
    {"Ensure Cover runs with tests in a test dir and no defined suite",
     setup, fun() -> setup_cover_project(), rebar("-v eunit") end,
     fun teardown/1,

     [{"All cover reports are generated",
       assert_files_in("the temporary eunit directory",
                       expected_cover_generated_files())},
      
      {"Only production modules get coverage reports",
       assert_files_not_in("the temporary eunit directory",
                           [".eunit/myapp_mymod_tests.COVER.html"])}]}.

cover_with_suite_test_() ->
    {"Ensure Cover runs with Tests in a test dir and a test suite",
     setup,
     fun() ->
             setup_cover_project_with_suite(),
             rebar("-v eunit suite=mysuite")
     end,
     fun teardown/1,

     [{"All cover reports are generated",
       assert_files_in("the temporary eunit directory",
                       expected_cover_generated_files())},

      {"Only production modules get coverage reports",
       assert_files_not_in("the temporary eunit directory",
                           [".eunit/myapp_mymod_tests.COVER.html",
                            ".eunit/mysuite.COVER.html"])}]}.

expected_cover_generated_files() ->
    [".eunit/index.html",
     ".eunit/myapp_app.COVER.html",
     ".eunit/myapp_mymod.COVER.html",
     ".eunit/myapp_sup.COVER.html"].

cover_coverage_test_() ->
    {"Coverage is accurately calculated",
     setup, fun() -> setup_cover_project(), rebar("-v eunit") end,
     fun teardown/1,

     [{"Modules that include the EUnit header can still have 100% coverage",
       %% cover notices the implicit EUnit test/0 func that never gets
       %% called during eunit:test(TestRepresentation), so NotCounted
       %% needs to be decremented in this case.
       assert_full_coverage("myapp_mymod")}]}.

%% ====================================================================
%% Environment and Setup Tests
%% ====================================================================

environment_test_() ->
    {"Sanity check the testing environment",
     setup, fun make_tmp_dir/0, fun remove_tmp_dir/1,

     [{"Ensure a test project can be created", 
       ?_assert(filelib:is_dir(?TMP_DIR))},

      {"Ensure the rebar script can be found, copied, and run",
       [?_assert(filelib:is_file(?REBAR_SCRIPT)),
        fun assert_rebar_runs/0]}]}.

assert_rebar_runs() ->
    prepare_rebar_script(),
    ?assert(string:str(os:cmd("./" ++ ?TMP_DIR ++ "rebar"), "Usage: rebar") =/= 0).

basic_setup_test_() ->
    {"Create a simple project with a 'test' directory, a test, and a module",
     setup, fun setup_basic_project/0, fun teardown/1,

     %% Test the setup function
     assert_dirs_in("Basic Project",
                    ["src", "ebin", "test"]) ++
     assert_files_in("Basic Project",
                     ["test/myapp_mymod_tests.erl", "src/myapp_mymod.erl"])}.

%% ====================================================================
%% Setup and Teardown
%% ====================================================================

-define(myapp_mymod, 
        ["-module(myapp_mymod).\n",
         "-export([myfunc/0]).\n",
         "-include_lib(\"eunit/include/eunit.hrl\").\n",
         "myfunc() -> ok.\n",
         "myprivate_test() -> ?assert(true).\n"]).

-define(myapp_mymod_tests, 
        ["-module(myapp_mymod_tests).\n",
         "-compile([export_all]).\n",
         "-include_lib(\"eunit/include/eunit.hrl\").\n",
         "myfunc_test() -> ?assertMatch(ok, myapp_mymod:myfunc()).\n"]).

-define(mysuite,
        ["-module(mysuite).\n",
         "-export([all_test_/0]).\n",
         "-include_lib(\"eunit/include/eunit.hrl\").\n",
         "all_test_() -> [myapp_mymod_defined_in_mysuite_tests].\n"]).

-define(myapp_mymod_defined_in_mysuite_tests, 
        ["-module(myapp_mymod_defined_in_mysuite_tests).\n",
         "-compile([export_all]).\n",
         "-include_lib(\"eunit/include/eunit.hrl\").\n",
         "myfunc_test() -> ?assertMatch(ok, myapp_mymod:myfunc()).\n"]).

make_tmp_dir() ->
    file:make_dir(?TMP_DIR).

setup_environment() ->
    make_tmp_dir(),
    prepare_rebar_script(),
    file:set_cwd(?TMP_DIR).

setup_basic_project() ->
    setup_environment(),
    rebar("create-app appid=myapp"),
    file:make_dir("test"),
    file:write_file("test/myapp_mymod_tests.erl", ?myapp_mymod_tests),
    file:write_file("src/myapp_mymod.erl", ?myapp_mymod).

setup_cover_project() ->
    setup_basic_project(),
    file:write_file("rebar.config", "{cover_enabled, true}.\n").

setup_cover_project_with_suite() ->
    setup_cover_project(),
    file:write_file("test/mysuite.erl", ?mysuite),
    file:write_file("test/myapp_mymod_defined_in_mysuite_tests.erl",
                    ?myapp_mymod_defined_in_mysuite_tests).

teardown(_) ->
    file:set_cwd(".."),
    remove_tmp_dir(),
    ok.

remove_tmp_dir() ->
    remove_tmp_dir(arg_for_eunit).

remove_tmp_dir(_) ->    
    case os:type() of
        {unix, _} ->
            os:cmd("rm -rf " ++ ?TMP_DIR ++ " 2>/dev/null");
        {win32, _} ->
            %% os:cmd("rmdir /S /Q " ++ ?TMP_DIR ++ " 2>NUL")
            exit("Windows is not supported yet.")
    end.

%% ====================================================================
%% Helper Functions
%% ====================================================================

prepare_rebar_script() ->
    {ok, _} = file:copy(?REBAR_SCRIPT, ?TMP_DIR ++ "rebar"),
    [] = os:cmd("chmod u+x " ++ ?TMP_DIR ++ "rebar").

rebar() ->
    rebar([]).

rebar(Args) when is_list(Args) ->
    Out = os:cmd("./rebar " ++ Args), 
    %?debugMsg("**** Begin"), ?debugMsg(Out), ?debugMsg("**** End"),
    Out.

assert_dirs_in(Name, [Dir|T]) ->
    [{Name ++ " has directory: " ++ Dir, ?_assert(filelib:is_dir(Dir))} |
     assert_dirs_in(Name, T)];                                                                         
assert_dirs_in(_, []) -> [].

assert_files_in(Name, [File|T]) ->
    [{Name ++ " has file: " ++ File, ?_assert(filelib:is_file(File))} |
     assert_files_in(Name, T)];   
assert_files_in(_, []) -> [].

assert_files_not_in(Name, [File|T]) ->
    [{Name ++ " does not have file: " ++ File, ?_assertNot(filelib:is_file(File))} |
     assert_files_not_in(Name, T)];   
assert_files_not_in(_, []) -> [].

assert_full_coverage(Mod) ->
    fun() ->
            {ok, F} = file:read_file(".eunit/index.html"),
            Result = [X || X <- string:tokens(binary_to_list(F), "\n"),
                           string:str(X, Mod) =/= 0,
                           string:str(X, "100%") =/= 0],
            file:close(F),
            ?assert(length(Result) == 1)
    end.