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asterisk/tests/test_channel_feature_hooks.c
George Joseph 747beb1ed1 modules: change module LOAD_FAILUREs to LOAD_DECLINES 
In all non-pbx modules, AST_MODULE_LOAD_FAILURE has been changed
to AST_MODULE_LOAD_DECLINE.  This prevents asterisk from exiting
if a module can't be loaded.  If the user wishes to retain the
FAILURE behavior for a specific module, they can use the "require"
or "preload-require" keyword in modules.conf.

A new API was added to logger: ast_is_logger_initialized().  This
allows asterisk.c/check_init() to print to the error log once the
logger subsystem is ready instead of just to stdout.  If something
does fail before the logger is initialized, we now print to stderr
instead of stdout.

Change-Id: I5f4b50623d9b5a6cb7c5624a8c5c1274c13b2b25
2017-04-12 15:57:21 -06:00

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2014, Digium, Inc.
*
* Kinsey Moore <kmoore@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
* \brief Channel features unit tests
*
* \author Kinsey Moore <kmoore@digium.com>
*
*/
/*** MODULEINFO
<depend>TEST_FRAMEWORK</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/test.h"
#include "asterisk/channel.h"
#include "asterisk/time.h"
#include "asterisk/bridge.h"
#include "asterisk/bridge_basic.h"
#include "asterisk/features.h"
#include "asterisk/format_cache.h"
#define TEST_CATEGORY "/channels/features/"
#define CHANNEL_TECH_NAME "FeaturesTestChannel"
#define TEST_BACKEND_NAME "Features Test Logging"
#define TEST_CHANNEL_FORMAT ast_format_slin
/*! \brief A channel technology used for the unit tests */
static struct ast_channel_tech test_features_chan_tech = {
.type = CHANNEL_TECH_NAME,
.description = "Mock channel technology for Features tests",
};
static void test_nanosleep(int secs, long nanosecs)
{
struct timespec sleep_time = {secs, nanosecs};
while ((nanosleep(&sleep_time, &sleep_time) == -1) && (errno == EINTR)) {
}
}
/*! \brief Wait until a channel is bridged */
static void wait_for_bridged(struct ast_channel *channel)
{
ast_channel_lock(channel);
while (!ast_channel_is_bridged(channel)) {
ast_channel_unlock(channel);
test_nanosleep(0, 1000000);
ast_channel_lock(channel);
}
ast_channel_unlock(channel);
}
/*! \brief Wait until a channel is not bridged */
static void wait_for_unbridged(struct ast_channel *channel)
{
ast_channel_lock(channel);
while (ast_channel_is_bridged(channel)) {
ast_channel_unlock(channel);
test_nanosleep(0, 1000000);
ast_channel_lock(channel);
}
ast_channel_unlock(channel);
}
/*! \brief Create a \ref test_features_chan_tech for Alice. */
#define START_ALICE(channel) START_CHANNEL(channel, "Alice", "100")
/*! \brief Create a \ref test_features_chan_tech for Bob. */
#define START_BOB(channel) START_CHANNEL(channel, "Bob", "200")
#define START_CHANNEL(channel, name, number) do { \
channel = ast_channel_alloc(0, AST_STATE_UP, number, name, number, number, \
"default", NULL, NULL, 0, CHANNEL_TECH_NAME "/" name); \
ast_channel_nativeformats_set(channel, test_features_chan_tech.capabilities); \
ast_channel_set_rawwriteformat(channel, TEST_CHANNEL_FORMAT); \
ast_channel_set_rawreadformat(channel, TEST_CHANNEL_FORMAT); \
ast_channel_set_writeformat(channel, TEST_CHANNEL_FORMAT); \
ast_channel_set_readformat(channel, TEST_CHANNEL_FORMAT); \
ast_channel_unlock(channel); \
} while (0)
/*! \brief Hang up a test channel safely */
#define HANGUP_CHANNEL(channel) do { \
ao2_ref(channel, +1); \
ast_hangup((channel)); \
ao2_cleanup(channel); \
channel = NULL; \
} while (0)
static void safe_channel_release(struct ast_channel *chan)
{
if (!chan) {
return;
}
ast_channel_release(chan);
}
static void safe_bridge_destroy(struct ast_bridge *bridge)
{
if (!bridge) {
return;
}
ast_bridge_destroy(bridge, 0);
}
static int feature_callback(struct ast_bridge_channel *bridge_channel, void *obj)
{
int *callback_executed = obj;
(*callback_executed)++;
return 0;
}
/* Need to post null frames periodically so DTMF emulation can work. */
static void stream_periodic_frames(struct ast_channel *chan, int ms, int interval_ms)
{
long nanosecs;
ast_assert(chan != NULL);
ast_assert(0 < ms);
ast_assert(0 < interval_ms);
nanosecs = interval_ms * 1000000L;
while (0 < ms) {
ast_queue_frame(chan, &ast_null_frame);
if (interval_ms < ms) {
ms -= interval_ms;
} else {
nanosecs = ms * 1000000L;
ms = 0;
}
test_nanosleep(0, nanosecs);
}
}
AST_TEST_DEFINE(test_features_channel_dtmf)
{
RAII_VAR(struct ast_channel *, chan_alice, NULL, safe_channel_release);
RAII_VAR(struct ast_channel *, chan_bob, NULL, safe_channel_release);
RAII_VAR(struct ast_bridge *, bridge1, NULL, safe_bridge_destroy);
RAII_VAR(struct ast_bridge *, bridge2, NULL, safe_bridge_destroy);
struct ast_bridge_features features;
int callback_executed = 0;
struct ast_frame f = { AST_FRAME_DTMF, };
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = TEST_CATEGORY;
info->summary = "Test running DTMF hooks on a channel via the feature hooks mechanism";
info->description =
"This test creates two channels, adds a DTMF hook to one, places them into\n"
"a bridge, and verifies that the DTMF hook added to the channel feature\n"
"hooks can be triggered once the channel is bridged.";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
/* Create the bridges */
bridge1 = ast_bridge_basic_new();
ast_test_validate(test, bridge1 != NULL);
bridge2 = ast_bridge_basic_new();
ast_test_validate(test, bridge2 != NULL);
/* Create channels that will go into the bridge */
START_ALICE(chan_alice);
START_BOB(chan_bob);
/* Setup the features and add them to alice */
ast_bridge_features_init(&features);
ast_test_validate(test, !ast_bridge_dtmf_hook(&features, "##**", feature_callback, &callback_executed, NULL, 0));
ast_test_validate(test, !ast_channel_feature_hooks_append(chan_alice, &features));
ast_bridge_features_cleanup(&features);
/* Bridge the channels */
ast_test_validate(test, !ast_bridge_impart(bridge1, chan_alice, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
ast_test_validate(test, !ast_bridge_impart(bridge1, chan_bob, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
wait_for_bridged(chan_alice);
/* Execute the feature */
f.len = 100;
f.subclass.integer = '#';
ast_queue_frame(chan_alice, &f);
ast_queue_frame(chan_alice, &f);
f.subclass.integer = '*';
ast_queue_frame(chan_alice, &f);
ast_queue_frame(chan_alice, &f);
stream_periodic_frames(chan_alice, 1000, 20);
/* Remove the channels from the bridge */
ast_test_validate(test, !ast_bridge_depart(chan_alice));
ast_test_validate(test, !ast_bridge_depart(chan_bob));
wait_for_unbridged(chan_alice);
/* Bridge the channels again to ensure that the feature hook remains on the channel */
ast_test_validate(test, !ast_bridge_impart(bridge2, chan_alice, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
ast_test_validate(test, !ast_bridge_impart(bridge2, chan_bob, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
wait_for_bridged(chan_alice);
/* Execute the feature */
f.len = 100;
f.subclass.integer = '#';
ast_queue_frame(chan_alice, &f);
ast_queue_frame(chan_alice, &f);
f.subclass.integer = '*';
ast_queue_frame(chan_alice, &f);
ast_queue_frame(chan_alice, &f);
stream_periodic_frames(chan_alice, 1000, 20);
/* Remove the channels from the bridge */
ast_test_validate(test, !ast_bridge_depart(chan_alice));
ast_test_validate(test, !ast_bridge_depart(chan_bob));
/* Hangup the channels */
HANGUP_CHANNEL(chan_alice);
HANGUP_CHANNEL(chan_bob);
ast_test_validate(test, callback_executed == 2);
return AST_TEST_PASS;
}
AST_TEST_DEFINE(test_features_channel_interval)
{
RAII_VAR(struct ast_channel *, chan_alice, NULL, safe_channel_release);
RAII_VAR(struct ast_channel *, chan_bob, NULL, safe_channel_release);
RAII_VAR(struct ast_bridge *, bridge1, NULL, safe_bridge_destroy);
RAII_VAR(struct ast_bridge *, bridge2, NULL, safe_bridge_destroy);
struct ast_bridge_features features;
int callback_executed = 0;
switch (cmd) {
case TEST_INIT:
info->name = __func__;
info->category = TEST_CATEGORY;
info->summary = "Test running interval hooks on a channel via the feature hooks mechanism";
info->description =
"This test creates two channels, adds an interval hook to one, places them\n"
"into a bridge, and verifies that the interval hook added to the channel\n"
"feature hooks is triggered once the channel is bridged.";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
/* Create the bridges */
bridge1 = ast_bridge_basic_new();
ast_test_validate(test, bridge1 != NULL);
bridge2 = ast_bridge_basic_new();
ast_test_validate(test, bridge2 != NULL);
/* Create channels that will go into the bridge */
START_ALICE(chan_alice);
START_BOB(chan_bob);
/* Setup the features and add them to alice */
ast_bridge_features_init(&features);
ast_test_validate(test, !ast_bridge_interval_hook(&features, 0, 1000, feature_callback, &callback_executed, NULL, 0));
ast_test_validate(test, !ast_channel_feature_hooks_append(chan_alice, &features));
ast_bridge_features_cleanup(&features);
/* Bridge the channels */
ast_test_validate(test, !ast_bridge_impart(bridge1, chan_alice, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
ast_test_validate(test, !ast_bridge_impart(bridge1, chan_bob, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
wait_for_bridged(chan_alice);
/* Let the interval hook execute once */
test_nanosleep(1, 500000000);
/* Remove the channels from the bridge */
ast_test_validate(test, !ast_bridge_depart(chan_alice));
ast_test_validate(test, !ast_bridge_depart(chan_bob));
wait_for_unbridged(chan_alice);
ast_test_validate(test, callback_executed >= 1);
callback_executed = 0;
/* Bridge the channels again to ensure that the feature hook remains on the channel */
ast_test_validate(test, !ast_bridge_impart(bridge2, chan_alice, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
ast_test_validate(test, !ast_bridge_impart(bridge2, chan_bob, NULL, NULL, AST_BRIDGE_IMPART_CHAN_DEPARTABLE));
wait_for_bridged(chan_alice);
/* Let the interval hook execute once */
test_nanosleep(1, 500000000);
/* Remove the channels from the bridge */
ast_test_validate(test, !ast_bridge_depart(chan_alice));
ast_test_validate(test, !ast_bridge_depart(chan_bob));
/* Hangup the channels */
HANGUP_CHANNEL(chan_alice);
HANGUP_CHANNEL(chan_bob);
ast_test_validate(test, callback_executed >= 1);
return AST_TEST_PASS;
}
static int unload_module(void)
{
AST_TEST_UNREGISTER(test_features_channel_dtmf);
AST_TEST_UNREGISTER(test_features_channel_interval);
ast_channel_unregister(&test_features_chan_tech);
ao2_cleanup(test_features_chan_tech.capabilities);
test_features_chan_tech.capabilities = NULL;
return 0;
}
static int load_module(void)
{
test_features_chan_tech.capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
if (!test_features_chan_tech.capabilities) {
return AST_MODULE_LOAD_DECLINE;
}
ast_format_cap_append(test_features_chan_tech.capabilities, TEST_CHANNEL_FORMAT, 0);
ast_channel_register(&test_features_chan_tech);
AST_TEST_REGISTER(test_features_channel_dtmf);
AST_TEST_REGISTER(test_features_channel_interval);
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Bridge Features Unit Tests");
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