[dpkg] / lib / dpkg / t / t-ehandle.c

/*
 * libdpkg - Debian packaging suite library routines
 * t-ehandle.c - test error handling implementation
 *
 * Copyright © 2016 Guillem Jover <guillem@debian.org>
 *
 * This 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 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, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <compat.h>

#include <stdbool.h>
#include <fcntl.h>
#include <unistd.h>

#include <dpkg/test.h>
#include <dpkg/ehandle.h>

jmp_buf global_handler_jump;

static void
printer_empty(const char *msg, const void *data)
{
}

static void
handler_func(void)
{
	longjmp(global_handler_jump, 1);
}

static void
test_error_handler_func(void)
{
	bool pass;

	if (setjmp(global_handler_jump)) {
		pass = true;
		pop_error_context(ehflag_normaltidy);
	} else {
		pass = false;
		push_error_context_func(handler_func, printer_empty, "test func");
		ohshit("test func error");
		test_bail("ohshit() is not supposed to return");
	}
	test_pass(pass);
}

static void
test_error_handler_jump(void)
{
	jmp_buf handler_jump;
	bool pass;

	if (setjmp(handler_jump)) {
		pass = true;
		pop_error_context(ehflag_normaltidy);
	} else {
		pass = false;
		push_error_context_jump(&handler_jump, printer_empty, "test jump");
		ohshit("test jump error");
		test_bail("ohshit() is not supposed to return");
	}
	test_pass(pass);
}

static void
cleanup_error(int argc, void **argv)
{
	ohshit("cleanup error");
}

static void
test_cleanup_error(void)
{
	jmp_buf handler_jump;
	bool pass;

	if (setjmp(handler_jump)) {
		/* The ohshit() is not supposed to get us here, as it should
		 * be caught by the internal recursive error context. */
		pass = false;

		pop_cleanup(ehflag_normaltidy);
		pop_error_context(ehflag_normaltidy);
	} else {
		/* Mark any error before this as not passing. */
		pass = false;

		push_error_context_jump(&handler_jump, printer_empty, "test cleanup");
		push_cleanup(cleanup_error, ~ehflag_normaltidy, NULL, 0, 0);
		pop_error_context(ehflag_bombout);

		/* We should have recovered from the cleanup handler failing,
		 * and arrived here correctly. */
		pass = true;
	}

	test_pass(pass);
}

TEST_ENTRY(test)
{
	int fd;

	test_plan(3);

	/* XXX: Shut up stderr, we don't want the error output. */
	fd = open("/dev/null", O_RDWR);
	if (fd < 0)
		test_bail("cannot open /dev/null");
	dup2(fd, 2);

	test_error_handler_func();
	test_error_handler_jump();
	test_cleanup_error();
}
Commit	Line	Data
1479465f GJ	1	/*
	2	* libdpkg - Debian packaging suite library routines
	3	* t-ehandle.c - test error handling implementation
	4	*
	5	* Copyright © 2016 Guillem Jover <guillem@debian.org>
	6	*
	7	* This is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
	21	#include <config.h>
	22	#include <compat.h>
	23
	24	#include <stdbool.h>
	25	#include <fcntl.h>
	26	#include <unistd.h>
	27
	28	#include <dpkg/test.h>
	29	#include <dpkg/ehandle.h>
	30
	31	jmp_buf global_handler_jump;
	32
	33	static void
	34	printer_empty(const char msg, const void data)
	35	{
	36	}
	37
	38	static void
	39	handler_func(void)
	40	{
	41	longjmp(global_handler_jump, 1);
	42	}
	43
	44	static void
	45	test_error_handler_func(void)
	46	{
	47	bool pass;
	48
	49	if (setjmp(global_handler_jump)) {
	50	pass = true;
	51	pop_error_context(ehflag_normaltidy);
	52	} else {
	53	pass = false;
	54	push_error_context_func(handler_func, printer_empty, "test func");
	55	ohshit("test func error");
	56	test_bail("ohshit() is not supposed to return");
	57	}
	58	test_pass(pass);
	59	}
	60
	61	static void
	62	test_error_handler_jump(void)
	63	{
	64	jmp_buf handler_jump;
65	bool pass;
66
67	if (setjmp(handler_jump)) {
68	pass = true;
69	pop_error_context(ehflag_normaltidy);
70	} else {
71	pass = false;
72	push_error_context_jump(&handler_jump, printer_empty, "test jump");
73	ohshit("test jump error");
74	test_bail("ohshit() is not supposed to return");
75	}
76	test_pass(pass);
77	}
78
79	static void
80	cleanup_error(int argc, void **argv)
81	{
82	ohshit("cleanup error");
83	}
84
85	static void
86	test_cleanup_error(void)
87	{
88	jmp_buf handler_jump;
89	bool pass;
90
91	if (setjmp(handler_jump)) {
92	/* The ohshit() is not supposed to get us here, as it should
93	* be caught by the internal recursive error context. */
94	pass = false;
95
96	pop_cleanup(ehflag_normaltidy);
97	pop_error_context(ehflag_normaltidy);
98	} else {
99	/* Mark any error before this as not passing. */
100	pass = false;
101
102	push_error_context_jump(&handler_jump, printer_empty, "test cleanup");
103	push_cleanup(cleanup_error, ~ehflag_normaltidy, NULL, 0, 0);
104	pop_error_context(ehflag_bombout);
105
106	/* We should have recovered from the cleanup handler failing,
107	* and arrived here correctly. */
108	pass = true;
109	}
110
111	test_pass(pass);
112	}
113
114	TEST_ENTRY(test)
115	{
116	int fd;
117
118	test_plan(3);
119
120	/* XXX: Shut up stderr, we don't want the error output. */
121	fd = open("/dev/null", O_RDWR);
122	if (fd < 0)
123	test_bail("cannot open /dev/null");
124	dup2(fd, 2);
125
126	test_error_handler_func();
127	test_error_handler_jump();
128	test_cleanup_error();
129	}