asterisk/tests/test_scope_trace.c
George Joseph 7440fd0397 Scope Trace: Add some new tracing macros and an ast_str helper
Created new SCOPE_ functions that don't depend on RAII_VAR.  Besides
generating less code, the use of the explicit SCOPE_EXIT macros
capture the line number where the scope exited.  The RAII_VAR
versions can't do that.

 * SCOPE_ENTER(level, ...): Like SCOPE_TRACE but doesn't use
   RAII_VAR and therefore needs needs one of...

 * SCOPE_EXIT(...): Decrements the trace stack counter and optionally
   prints a message.

 * SCOPE_EXIT_EXPR(__expr, ...): Decrements the trace stack counter,
   optionally prints a message, then executes the expression.
   SCOPE_EXIT_EXPR(break, "My while got broken\n");

 * SCOPE_EXIT_RTN(, ...): Decrements the trace stack counter,
   optionally prints a message, then returns without a value.
   SCOPE_EXIT_RTN("Bye\n");

 * SCOPE_EXIT_RTN_VALUE(__return_value, ...): Decrements the trace
   stack counter, optionally prints a message, then returns the value
   specified.
   SCOPE_EXIT_RTN_VALUE(rc, "Returning with RC: %d\n", rc);

Create an ast_str helper ast_str_tmp() that allocates a temporary
ast_str that can be passed to a function that needs it, then frees
it.  This makes using the above macros easier.  Example:

   SCOPE_ENTER(1, Format Caps 1: %s  Format Caps 2: %s\n",
       ast_str_tmp(32, ast_format_cap_get_names(cap1, &STR_TMP),
       ast_str_tmp(32, ast_format_cap_get_names(cap2, &STR_TMP));

The calls to ast_str_tmp create an ast_str of the specified initial
length which can be referenced as STR_TMP.  It then calls the
expression, which must return a char *, ast_strdupa's it, frees
STR_TMP, then returns the ast_strdupa'd string.  That string is
freed when the function returns.

Change-Id: I44059b20d55a889aa91440d2f8a590865998be51
2020-06-30 09:22:32 -05:00

127 lines
2.9 KiB
C

/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2020, Sangoma Technologies Corp
*
* George Joseph <gjoseph@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 Test for Scope Trace
*
* \author\verbatim George Joseph <gjoseph@digium.com> \endverbatim
*
* tests for Scope Trace
* \ingroup tests
*/
/*** MODULEINFO
<depend>TEST_FRAMEWORK</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/utils.h"
#include "asterisk/module.h"
#include "asterisk/test.h"
#include "asterisk/logger.h"
static const char *str_appender(struct ast_str**buf, char *a)
{
ast_str_append(buf, 0, "<append %s>", a);
return ast_str_buffer(*buf);
}
static void test_scope_trace(void)
{
SCOPE_ENTER(1, "subfunction\n");
SCOPE_EXIT_RTN("got out\n");
}
static int test_scope_enter_function(void)
{
SCOPE_ENTER(1, "%s %s %s %s %s %s %s\n",
ast_str_tmp(12, str_appender(&STR_TMP, "str1")),
ast_str_tmp(12, str_appender(&STR_TMP, "str2")),
ast_str_tmp(32, str_appender(&STR_TMP, "AAAAAAAAAAAAAAAAAAAAAAAA")),
ast_str_tmp(12, str_appender(&STR_TMP, "B")),
"ccccccccccccc",
ast_str_tmp(12, str_appender(&STR_TMP, "DDDDD")),
ast_str_tmp(12, str_appender(&STR_TMP, "ww"))
);
test_scope_trace();
SCOPE_EXIT_RTN_VALUE(AST_TEST_PASS, "test no variables\n");
}
AST_TEST_DEFINE(scope_test)
{
SCOPE_ENTER(1, "top %s function\n", "scope_test");
ast_trace(1, "%s\n", "test outer");
switch (cmd) {
case TEST_INIT:
{
SCOPE_ENTER(1, "TEST_INIT\n");
info->name = "scope_test";
info->category = "/main/logging/";
info->summary = "Scope Trace Tests";
info->description = "Scope Trace Tests";
/* need to exit the case scope */
SCOPE_EXIT("TEST_INIT\n");
/* need to exit the function */
SCOPE_EXIT_RTN_VALUE(AST_TEST_NOT_RUN, "BYE\n");
}
case TEST_EXECUTE:
{
SCOPE_ENTER(1, "TEST_EXECUTE\n");
ast_trace(1, "%s\n", "test execute");
SCOPE_EXIT_EXPR(break, "TEST_EXECUTE\n");
}
default:
ast_test_status_update(test, "Shouldn't have gotten here\n");
return AST_TEST_FAIL;
}
if (1) {
SCOPE_TRACE(1, "IF block\n");
test_scope_enter_function();
}
ast_trace(1);
ast_trace(1, "test no variables\n");
ast_trace(1, "%s\n", "test variable");
SCOPE_EXIT_RTN_VALUE(AST_TEST_PASS, "Something: %d\n", AST_TEST_PASS);
}
static int unload_module(void)
{
AST_TEST_UNREGISTER(scope_test);
return 0;
}
static int load_module(void)
{
AST_TEST_REGISTER(scope_test);
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Scope Trace Test");