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
|
# ----------------------------------------------------------------------
#
# ejabberd, Copyright (C) 2002-2016 ProcessOne
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# ----------------------------------------------------------------------
# Notes on the tests:
#
# This test suite will print out errors in logs for tests:
#
# test "Error in run_fold is ignored"
# test "Throw in run_fold is ignored"
# test "Exit in run_fold is ignored"
#
# Those tests are not failing and we can safely ignore those errors in
# log as we are exercising hook handler recovery from that situation.
defmodule EjabberdHooksTest do
use ExUnit.Case, async: false
@author "mremond@process-one.net"
@host <<"domain.net">>
@self __MODULE__
setup_all do
{:ok, _pid} = :ejabberd_hooks.start_link
:ok
end
setup do
:meck.unload
:true = :ejabberd_hooks.delete_all_hooks
:ok
end
test "An anonymous function can be added as a hook" do
hookname = :test_fun_hook
:ok = :ejabberd_hooks.add(hookname, @host, fn _ -> :ok end, 50)
[{50, :undefined, _}] = :ejabberd_hooks.get_handlers(hookname, @host)
end
test "A module function can be added as a hook" do
hookname = :test_mod_hook
callback = :hook_callback
:ok = :ejabberd_hooks.add(hookname, @host, @self, callback, 40)
[{40, @self, _callback}] = :ejabberd_hooks.get_handlers(hookname, @host)
end
test "An anonymous function can be removed from hook handlers" do
hookname = :test_fun_hook
anon_fun = fn _ -> :ok end
:ok = :ejabberd_hooks.add(hookname, @host, anon_fun, 50)
:ok = :ejabberd_hooks.delete(hookname, @host, anon_fun, 50)
[] = :ejabberd_hooks.get_handlers(hookname, @host)
end
test "An module function can be removed from hook handlers" do
hookname = :test_mod_hook
callback = :hook_callback
:ok = :ejabberd_hooks.add(hookname, @host, @self, callback, 40)
:ok = :ejabberd_hooks.delete(hookname, @host, @self, callback, 40)
[] = :ejabberd_hooks.get_handlers(hookname, @host)
# TODO: Check that removed function is not call anymore
end
test "'Run hook' call registered handler once" do
test_result = :hook_result
run_hook([], fn -> test_result end, test_result)
end
test "'Run hook' can call registered handler with parameters" do
test_result = :hook_result_with_params
run_hook([:hook_params], fn _ -> test_result end, test_result)
end
# TODO test "Several handlers are run in order by hook"
test "Hook run chain is stopped when handler return 'stop'" do
# setup test
hookname = :test_mod_hook
modulename = :hook_module
mock(modulename, :hook_callback1, fn _ -> :stop end)
mock(modulename, :hook_callback2, fn _ -> :end_result end)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback1, 40)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback1, 50)
:ok = :ejabberd_hooks.run(hookname, @host, [:hook_params])
# callback2 is never run:
[{_pid, {^modulename, _callback, [:hook_params]}, :stop}] = :meck.history(modulename)
end
test "Run fold hooks accumulate state in correct order through handlers" do
# setup test
hookname = :test_mod_hook
modulename = :hook_module
mock(modulename, :hook_callback1, fn(list, user) -> [user|list] end)
mock(modulename, :hook_callback2, fn(list, _user) -> ["jid2"|list] end)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback1, 40)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback2, 50)
["jid2", "jid1"] = :ejabberd_hooks.run_fold(hookname, @host, [], ["jid1"])
end
test "Hook run_fold are executed based on priority order, not registration order" do
# setup test
hookname = :test_mod_hook
modulename = :hook_module
mock(modulename, :hook_callback1, fn(_acc) -> :first end)
mock(modulename, :hook_callback2, fn(_acc) -> :second end)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback2, 50)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback1, 40)
:second = :ejabberd_hooks.run_fold(hookname, @host, :started, [])
# Both module have been called:
2 = length(:meck.history(modulename))
end
# TODO: Test with ability to stop and return a value
test "Hook run_fold chain is stopped when handler return 'stop'" do
# setup test
hookname = :test_mod_hook
modulename = :hook_module
mock(modulename, :hook_callback1, fn(_acc) -> :stop end)
mock(modulename, :hook_callback2, fn(_acc) -> :executed end)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback1, 40)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback2, 50)
:stopped = :ejabberd_hooks.run_fold(hookname, @host, :started, [])
# Only one module has been called
[{_pid, {^modulename, :hook_callback1, [:started]}, :stop}] = :meck.history(modulename)
end
test "Error in run_fold is ignored" do
run_fold_crash(fn(_acc) -> raise "crashed" end)
end
test "Throw in run_fold is ignored" do
run_fold_crash(fn(_acc) -> throw :crashed end)
end
test "Exit in run_fold is ignored" do
run_fold_crash(fn(_acc) -> exit :crashed end)
end
# test for run hook with various number of params
def run_hook(params, fun, result) do
# setup test
hookname = :test_mod_hook
modulename = :hook_module
callback = :hook_callback
mock(modulename, callback, fun)
# Then check
:ok = :ejabberd_hooks.add(hookname, @host, modulename, callback, 40)
:ok = :ejabberd_hooks.run(hookname, @host, params)
[{_pid, {^modulename, ^callback, ^params}, ^result}] = :meck.history(modulename)
end
def run_fold_crash(crash_fun) do
# setup test
hookname = :test_mod_hook
modulename = :hook_module
mock(modulename, :hook_callback1, crash_fun)
mock(modulename, :hook_callback2, fn(_acc) -> :final end)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback1, 40)
:ok = :ejabberd_hooks.add(hookname, @host, modulename, :hook_callback2, 50)
:final = :ejabberd_hooks.run_fold(hookname, @host, :started, [])
# Both handlers were called
2 = length(:meck.history(modulename))
end
# TODO refactor: Move to ejabberd_test_mock
def mock(module, function, fun) do
try do
:meck.new(module, [:non_strict])
catch
:error, {:already_started, _pid} -> :ok
end
:meck.expect(module, function, fun)
end
end
|
