776 lines
21 KiB
Groff
776 lines
21 KiB
Groff
.\"
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.\" Automated Testing Framework (atf)
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.\"
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.\" Copyright (c) 2008 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
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.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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.\" GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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.\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd November 15, 2013
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.Dt ATF-C-API 3
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.Os
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.Sh NAME
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.Nm atf-c-api ,
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.Nm ATF_CHECK ,
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.Nm ATF_CHECK_MSG ,
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.Nm ATF_CHECK_EQ ,
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.Nm ATF_CHECK_EQ_MSG ,
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.Nm ATF_CHECK_MATCH ,
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.Nm ATF_CHECK_MATCH_MSG ,
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.Nm ATF_CHECK_STREQ ,
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.Nm ATF_CHECK_STREQ_MSG ,
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.Nm ATF_CHECK_ERRNO ,
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.Nm ATF_REQUIRE ,
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.Nm ATF_REQUIRE_MSG ,
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.Nm ATF_REQUIRE_EQ ,
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.Nm ATF_REQUIRE_EQ_MSG ,
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.Nm ATF_REQUIRE_MATCH ,
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.Nm ATF_REQUIRE_MATCH_MSG ,
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.Nm ATF_REQUIRE_STREQ ,
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.Nm ATF_REQUIRE_STREQ_MSG ,
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.Nm ATF_REQUIRE_ERRNO ,
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.Nm ATF_TC ,
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.Nm ATF_TC_BODY ,
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.Nm ATF_TC_BODY_NAME ,
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.Nm ATF_TC_CLEANUP ,
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.Nm ATF_TC_CLEANUP_NAME ,
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.Nm ATF_TC_HEAD ,
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.Nm ATF_TC_HEAD_NAME ,
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.Nm ATF_TC_NAME ,
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.Nm ATF_TC_WITH_CLEANUP ,
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.Nm ATF_TC_WITHOUT_HEAD ,
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.Nm ATF_TP_ADD_TC ,
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.Nm ATF_TP_ADD_TCS ,
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.Nm atf_tc_get_config_var ,
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.Nm atf_tc_get_config_var_wd ,
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.Nm atf_tc_get_config_var_as_bool ,
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.Nm atf_tc_get_config_var_as_bool_wd ,
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.Nm atf_tc_get_config_var_as_long ,
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.Nm atf_tc_get_config_var_as_long_wd ,
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.Nm atf_no_error ,
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.Nm atf_tc_expect_death ,
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.Nm atf_tc_expect_exit ,
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.Nm atf_tc_expect_fail ,
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.Nm atf_tc_expect_pass ,
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.Nm atf_tc_expect_signal ,
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.Nm atf_tc_expect_timeout ,
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.Nm atf_tc_fail ,
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.Nm atf_tc_fail_nonfatal ,
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.Nm atf_tc_pass ,
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.Nm atf_tc_skip ,
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.Nm atf_utils_cat_file ,
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.Nm atf_utils_compare_file ,
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.Nm atf_utils_copy_file ,
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.Nm atf_utils_create_file ,
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.Nm atf_utils_file_exists ,
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.Nm atf_utils_fork ,
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.Nm atf_utils_free_charpp ,
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.Nm atf_utils_grep_file ,
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.Nm atf_utils_grep_string ,
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.Nm atf_utils_readline ,
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.Nm atf_utils_redirect ,
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.Nm atf_utils_wait
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.Nd C API to write ATF-based test programs
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.Sh SYNOPSIS
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.In atf-c.h
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.Fn ATF_CHECK "expression"
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.Fn ATF_CHECK_MSG "expression" "fail_msg_fmt" ...
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.Fn ATF_CHECK_EQ "expression_1" "expression_2"
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.Fn ATF_CHECK_EQ_MSG "expression_1" "expression_2" "fail_msg_fmt" ...
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.Fn ATF_CHECK_MATCH "regexp" "string"
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.Fn ATF_CHECK_MATCH_MSG "regexp" "string" "fail_msg_fmt" ...
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.Fn ATF_CHECK_STREQ "string_1" "string_2"
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.Fn ATF_CHECK_STREQ_MSG "string_1" "string_2" "fail_msg_fmt" ...
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.Fn ATF_CHECK_ERRNO "exp_errno" "bool_expression"
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.Fn ATF_REQUIRE "expression"
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.Fn ATF_REQUIRE_MSG "expression" "fail_msg_fmt" ...
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.Fn ATF_REQUIRE_EQ "expression_1" "expression_2"
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.Fn ATF_REQUIRE_EQ_MSG "expression_1" "expression_2" "fail_msg_fmt" ...
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.Fn ATF_REQUIRE_MATCH "regexp" "string"
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.Fn ATF_REQUIRE_MATCH_MSG "regexp" "string" "fail_msg_fmt" ...
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.Fn ATF_REQUIRE_STREQ "string_1" "string_2"
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.Fn ATF_REQUIRE_STREQ_MSG "string_1" "string_2" "fail_msg_fmt" ...
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.Fn ATF_REQUIRE_ERRNO "exp_errno" "bool_expression"
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.Fn ATF_TC "name"
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.Fn ATF_TC_BODY "name" "tc"
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.Fn ATF_TC_BODY_NAME "name"
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.Fn ATF_TC_CLEANUP "name" "tc"
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.Fn ATF_TC_CLEANUP_NAME "name"
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.Fn ATF_TC_HEAD "name" "tc"
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.Fn ATF_TC_HEAD_NAME "name"
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.Fn ATF_TC_NAME "name"
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.Fn ATF_TC_WITH_CLEANUP "name"
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.Fn ATF_TC_WITHOUT_HEAD "name"
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.Fn ATF_TP_ADD_TC "tp_name" "tc_name"
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.Fn ATF_TP_ADD_TCS "tp_name"
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.Fn atf_tc_get_config_var "tc" "varname"
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.Fn atf_tc_get_config_var_wd "tc" "variable_name" "default_value"
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.Fn atf_tc_get_config_var_as_bool "tc" "variable_name"
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.Fn atf_tc_get_config_var_as_bool_wd "tc" "variable_name" "default_value"
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.Fn atf_tc_get_config_var_as_long "tc" "variable_name"
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.Fn atf_tc_get_config_var_as_long_wd "tc" "variable_name" "default_value"
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.Fn atf_no_error
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.Fn atf_tc_expect_death "reason" "..."
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.Fn atf_tc_expect_exit "exitcode" "reason" "..."
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.Fn atf_tc_expect_fail "reason" "..."
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.Fn atf_tc_expect_pass
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.Fn atf_tc_expect_signal "signo" "reason" "..."
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.Fn atf_tc_expect_timeout "reason" "..."
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.Fn atf_tc_fail "reason"
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.Fn atf_tc_fail_nonfatal "reason"
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.Fn atf_tc_pass
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.Fn atf_tc_skip "reason"
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.Ft void
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.Fo atf_utils_cat_file
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.Fa "const char *file"
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.Fa "const char *prefix"
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.Fc
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.Ft bool
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.Fo atf_utils_compare_file
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.Fa "const char *file"
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.Fa "const char *contents"
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.Fc
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.Ft void
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.Fo atf_utils_copy_file
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.Fa "const char *source"
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.Fa "const char *destination"
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.Fc
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.Ft void
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.Fo atf_utils_create_file
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.Fa "const char *file"
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.Fa "const char *contents"
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.Fa "..."
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.Fc
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.Ft void
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.Fo atf_utils_file_exists
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.Fa "const char *file"
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.Fc
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.Ft pid_t
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.Fo atf_utils_fork
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.Fa "void"
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.Fc
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.Ft void
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.Fo atf_utils_free_charpp
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.Fa "char **argv"
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.Fc
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.Ft bool
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.Fo atf_utils_grep_file
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.Fa "const char *regexp"
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.Fa "const char *file"
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.Fa "..."
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.Fc
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.Ft bool
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.Fo atf_utils_grep_string
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.Fa "const char *regexp"
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.Fa "const char *str"
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.Fa "..."
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.Fc
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.Ft char *
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.Fo atf_utils_readline
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.Fa "int fd"
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.Fc
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.Ft void
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.Fo atf_utils_redirect
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.Fa "const int fd"
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.Fa "const char *file"
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.Fc
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.Ft void
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.Fo atf_utils_wait
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.Fa "const pid_t pid"
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.Fa "const int expected_exit_status"
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.Fa "const char *expected_stdout"
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.Fa "const char *expected_stderr"
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.Fc
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.Sh DESCRIPTION
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ATF provides a C programming interface to implement test programs.
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C-based test programs follow this template:
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.Bd -literal -offset indent
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.Ns ... C-specific includes go here ...
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#include <atf-c.h>
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ATF_TC(tc1);
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ATF_TC_HEAD(tc1, tc)
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{
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... first test case's header ...
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}
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ATF_TC_BODY(tc1, tc)
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{
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... first test case's body ...
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}
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ATF_TC_WITH_CLEANUP(tc2);
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ATF_TC_HEAD(tc2, tc)
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{
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... second test case's header ...
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}
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ATF_TC_BODY(tc2, tc)
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{
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... second test case's body ...
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}
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ATF_TC_CLEANUP(tc2, tc)
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{
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... second test case's cleanup ...
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}
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ATF_TC_WITHOUT_HEAD(tc3);
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ATF_TC_BODY(tc3, tc)
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{
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... third test case's body ...
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}
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.Ns ... additional test cases ...
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tcs, tc1);
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ATF_TP_ADD_TC(tcs, tc2);
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ATF_TP_ADD_TC(tcs, tc3);
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... add additional test cases ...
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return atf_no_error();
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}
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.Ed
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.Ss Definition of test cases
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Test cases have an identifier and are composed of three different parts:
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the header, the body and an optional cleanup routine, all of which are
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described in
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.Xr atf-test-case 4 .
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To define test cases, one can use the
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.Fn ATF_TC ,
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.Fn ATF_TC_WITH_CLEANUP
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or the
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.Fn ATF_TC_WITHOUT_HEAD
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macros, which take a single parameter specifiying the test case's name.
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.Fn ATF_TC ,
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requires to define a head and a body for the test case,
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.Fn ATF_TC_WITH_CLEANUP
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requires to define a head, a body and a cleanup for the test case and
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.Fn ATF_TC_WITHOUT_HEAD
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requires only a body for the test case.
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It is important to note that these
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.Em do not
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set the test case up for execution when the program is run.
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In order to do so, a later registration is needed with the
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.Fn ATF_TP_ADD_TC
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macro detailed in
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.Sx Program initialization .
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.Pp
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Later on, one must define the three parts of the body by means of three
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functions.
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Their headers are given by the
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.Fn ATF_TC_HEAD ,
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.Fn ATF_TC_BODY
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and
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.Fn ATF_TC_CLEANUP
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macros, all of which take the test case name provided to the
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.Fn ATF_TC
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.Fn ATF_TC_WITH_CLEANUP ,
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or
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.Fn ATF_TC_WITHOUT_HEAD
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macros and the name of the variable that will hold a pointer to the
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test case data.
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Following each of these, a block of code is expected, surrounded by the
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opening and closing brackets.
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.Ss Program initialization
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The library provides a way to easily define the test program's
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.Fn main
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function.
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You should never define one on your own, but rely on the
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library to do it for you.
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This is done by using the
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.Fn ATF_TP_ADD_TCS
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macro, which is passed the name of the object that will hold the test
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cases; i.e. the test program instance.
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This name can be whatever you want as long as it is a valid variable
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identifier.
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.Pp
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After the macro, you are supposed to provide the body of a function, which
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should only use the
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.Fn ATF_TP_ADD_TC
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macro to register the test cases the test program will execute and return
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a success error code.
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The first parameter of this macro matches the name you provided in the
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former call.
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The success status can be returned using the
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.Fn atf_no_error
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function.
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.Ss Header definitions
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The test case's header can define the meta-data by using the
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.Fn atf_tc_set_md_var
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method, which takes three parameters: the first one points to the test
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case data, the second one specifies the meta-data variable to be set
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and the third one specifies its value.
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Both of them are strings.
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.Ss Configuration variables
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The test case has read-only access to the current configuration variables
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by means of the
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.Ft bool
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.Fn atf_tc_has_config_var ,
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.Ft const char *
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.Fn atf_tc_get_config_var ,
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.Ft const char *
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.Fn atf_tc_get_config_var_wd ,
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.Ft bool
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.Fn atf_tc_get_config_var_as_bool ,
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.Ft bool
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.Fn atf_tc_get_config_var_as_bool_wd ,
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.Ft long
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.Fn atf_tc_get_config_var_as_long ,
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and the
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.Ft long
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.Fn atf_tc_get_config_var_as_long_wd
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functions, which can be called in any of the three parts of a test case.
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.Pp
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The
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.Sq _wd
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variants take a default value for the variable which is returned if the
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variable is not defined.
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The other functions without the
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.Sq _wd
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suffix
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.Em require
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the variable to be defined.
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.Ss Access to the source directory
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It is possible to get the path to the test case's source directory from any
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of its three components by querying the
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.Sq srcdir
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configuration variable.
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.Ss Requiring programs
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Aside from the
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.Va require.progs
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meta-data variable available in the header only, one can also check for
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additional programs in the test case's body by using the
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.Fn atf_tc_require_prog
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function, which takes the base name or full path of a single binary.
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Relative paths are forbidden.
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If it is not found, the test case will be automatically skipped.
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.Ss Test case finalization
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The test case finalizes either when the body reaches its end, at which
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point the test is assumed to have
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.Em passed ,
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unless any non-fatal errors were raised using
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.Fn atf_tc_fail_nonfatal ,
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or at any explicit call to
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.Fn atf_tc_pass ,
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.Fn atf_tc_fail
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or
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.Fn atf_tc_skip .
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These three functions terminate the execution of the test case immediately.
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The cleanup routine will be processed afterwards in a completely automated
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way, regardless of the test case's termination reason.
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.Pp
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.Fn atf_tc_pass
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does not take any parameters.
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.Fn atf_tc_fail ,
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.Fn atf_tc_fail_nonfatal
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and
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.Fn atf_tc_skip
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take a format string and a variable list of parameters, which describe, in
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a user-friendly manner, why the test case failed or was skipped,
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respectively.
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It is very important to provide a clear error message in both cases so that
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the user can quickly know why the test did not pass.
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.Ss Expectations
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Everything explained in the previous section changes when the test case
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expectations are redefined by the programmer.
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.Pp
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Each test case has an internal state called
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.Sq expect
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that describes what the test case expectations are at any point in time.
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The value of this property can change during execution by any of:
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.Bl -tag -width indent
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.It Fn atf_tc_expect_death "reason" "..."
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Expects the test case to exit prematurely regardless of the nature of the
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exit.
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.It Fn atf_tc_expect_exit "exitcode" "reason" "..."
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Expects the test case to exit cleanly.
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If
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.Va exitcode
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is not
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.Sq -1 ,
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.Xr atf-run 1
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will validate that the exit code of the test case matches the one provided
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in this call.
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Otherwise, the exact value will be ignored.
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.It Fn atf_tc_expect_fail "reason" "..."
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Any failure (be it fatal or non-fatal) raised in this mode is recorded.
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However, such failures do not report the test case as failed; instead, the
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test case finalizes cleanly and is reported as
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.Sq expected failure ;
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this report includes the provided
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.Fa reason
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as part of it.
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If no error is raised while running in this mode, then the test case is
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reported as
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.Sq failed .
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.Pp
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This mode is useful to reproduce actual known bugs in tests.
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Whenever the developer fixes the bug later on, the test case will start
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reporting a failure, signaling the developer that the test case must be
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adjusted to the new conditions.
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In this situation, it is useful, for example, to set
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.Fa reason
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as the bug number for tracking purposes.
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.It Fn atf_tc_expect_pass
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This is the normal mode of execution.
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In this mode, any failure is reported as such to the user and the test case
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is marked as
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.Sq failed .
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.It Fn atf_tc_expect_signal "signo" "reason" "..."
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Expects the test case to terminate due to the reception of a signal.
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If
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.Va signo
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is not
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.Sq -1 ,
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.Xr atf-run 1
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will validate that the signal that terminated the test case matches the one
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provided in this call.
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Otherwise, the exact value will be ignored.
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.It Fn atf_tc_expect_timeout "reason" "..."
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Expects the test case to execute for longer than its timeout.
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.El
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.Ss Helper macros for common checks
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The library provides several macros that are very handy in multiple
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situations.
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These basically check some condition after executing a given statement or
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processing a given expression and, if the condition is not met, they
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report the test case as failed.
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.Pp
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The
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.Sq REQUIRE
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variant of the macros immediately abort the test case as soon as an error
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condition is detected by calling the
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.Fn atf_tc_fail
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function.
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Use this variant whenever it makes no sense to continue the execution of a
|
|
test case when the checked condition is not met.
|
|
The
|
|
.Sq CHECK
|
|
variant, on the other hand, reports a failure as soon as it is encountered
|
|
using the
|
|
.Fn atf_tc_fail_nonfatal
|
|
function, but the execution of the test case continues as if nothing had
|
|
happened.
|
|
Use this variant whenever the checked condition is important as a result of
|
|
the test case, but there are other conditions that can be subsequently
|
|
checked on the same run without aborting.
|
|
.Pp
|
|
Additionally, the
|
|
.Sq MSG
|
|
variants take an extra set of parameters to explicitly specify the failure
|
|
message.
|
|
This failure message is formatted according to the
|
|
.Xr printf 3
|
|
formatters.
|
|
.Pp
|
|
.Fn ATF_CHECK ,
|
|
.Fn ATF_CHECK_MSG ,
|
|
.Fn ATF_REQUIRE
|
|
and
|
|
.Fn ATF_REQUIRE_MSG
|
|
take an expression and fail if the expression evaluates to false.
|
|
.Pp
|
|
.Fn ATF_CHECK_EQ ,
|
|
.Fn ATF_CHECK_EQ_MSG ,
|
|
.Fn ATF_REQUIRE_EQ
|
|
and
|
|
.Fn ATF_REQUIRE_EQ_MSG
|
|
take two expressions and fail if the two evaluated values are not equal.
|
|
.Pp
|
|
.Fn ATF_CHECK_MATCH ,
|
|
.Fn ATF_CHECK_MATCH_MSG ,
|
|
.Fn ATF_REQUIRE_MATCH
|
|
and
|
|
.Fn ATF_REQUIRE_MATCH_MSG
|
|
take a regular expression and a string and fail if the regular expression does
|
|
not match the given string.
|
|
Note that the regular expression is not anchored, so it will match anywhere in
|
|
the string.
|
|
.Pp
|
|
.Fn ATF_CHECK_STREQ ,
|
|
.Fn ATF_CHECK_STREQ_MSG ,
|
|
.Fn ATF_REQUIRE_STREQ
|
|
and
|
|
.Fn ATF_REQUIRE_STREQ_MSG
|
|
take two strings and fail if the two are not equal character by character.
|
|
.Pp
|
|
.Fn ATF_CHECK_ERRNO
|
|
and
|
|
.Fn ATF_REQUIRE_ERRNO
|
|
take, first, the error code that the check is expecting to find in the
|
|
.Va errno
|
|
variable and, second, a boolean expression that, if evaluates to true,
|
|
means that a call failed and
|
|
.Va errno
|
|
has to be checked against the first value.
|
|
.Ss Utility functions
|
|
The following functions are provided as part of the
|
|
.Nm
|
|
API to simplify the creation of a variety of tests.
|
|
In particular, these are useful to write tests for command-line interfaces.
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_cat_file
|
|
.Fa "const char *file"
|
|
.Fa "const char *prefix"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Prints the contents of
|
|
.Fa file
|
|
to the standard output, prefixing every line with the string in
|
|
.Fa prefix .
|
|
.Ed
|
|
.Pp
|
|
.Ft bool
|
|
.Fo atf_utils_compare_file
|
|
.Fa "const char *file"
|
|
.Fa "const char *contents"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Returns true if the given
|
|
.Fa file
|
|
matches exactly the expected inlined
|
|
.Fa contents .
|
|
.Ed
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_copy_file
|
|
.Fa "const char *source"
|
|
.Fa "const char *destination"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Copies the file
|
|
.Fa source
|
|
to
|
|
.Fa destination .
|
|
The permissions of the file are preserved during the code.
|
|
.Ed
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_create_file
|
|
.Fa "const char *file"
|
|
.Fa "const char *contents"
|
|
.Fa "..."
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Creates
|
|
.Fa file
|
|
with the text given in
|
|
.Fa contents ,
|
|
which is a formatting string that uses the rest of the variable arguments.
|
|
.Ed
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_file_exists
|
|
.Fa "const char *file"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Checks if
|
|
.Fa file
|
|
exists.
|
|
.Ed
|
|
.Pp
|
|
.Ft pid_t
|
|
.Fo atf_utils_fork
|
|
.Fa "void"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Forks a process and redirects the standard output and standard error of the
|
|
child to files for later validation with
|
|
.Fn atf_utils_wait .
|
|
Fails the test case if the fork fails, so this does not return an error.
|
|
.Ed
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_free_charpp
|
|
.Fa "char **argv"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Frees a dynamically-allocated array of dynamically-allocated strings.
|
|
.Ed
|
|
.Pp
|
|
.Ft bool
|
|
.Fo atf_utils_grep_file
|
|
.Fa "const char *regexp"
|
|
.Fa "const char *file"
|
|
.Fa "..."
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Searches for the
|
|
.Fa regexp ,
|
|
which is a formatting string representing the regular expression,
|
|
in the
|
|
.Fa file .
|
|
The variable arguments are used to construct the regular expression.
|
|
.Ed
|
|
.Pp
|
|
.Ft bool
|
|
.Fo atf_utils_grep_string
|
|
.Fa "const char *regexp"
|
|
.Fa "const char *str"
|
|
.Fa "..."
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Searches for the
|
|
.Fa regexp ,
|
|
which is a formatting string representing the regular expression,
|
|
in the literal string
|
|
.Fa str .
|
|
The variable arguments are used to construct the regular expression.
|
|
.Ed
|
|
.Pp
|
|
.Ft char *
|
|
.Fo atf_utils_readline
|
|
.Fa "int fd"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Reads a line from the file descriptor
|
|
.Fa fd .
|
|
The line, if any, is returned as a dynamically-allocated buffer that must be
|
|
released with
|
|
.Xr free 3 .
|
|
If there was nothing to read, returns
|
|
.Sq NULL .
|
|
.Ed
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_redirect
|
|
.Fa "const int fd"
|
|
.Fa "const char *file"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Redirects the given file descriptor
|
|
.Fa fd
|
|
to
|
|
.Fa file .
|
|
This function exits the process in case of an error and does not properly mark
|
|
the test case as failed.
|
|
As a result, it should only be used in subprocesses of the test case; specially
|
|
those spawned by
|
|
.Fn atf_utils_fork .
|
|
.Ed
|
|
.Pp
|
|
.Ft void
|
|
.Fo atf_utils_wait
|
|
.Fa "const pid_t pid"
|
|
.Fa "const int expected_exit_status"
|
|
.Fa "const char *expected_stdout"
|
|
.Fa "const char *expected_stderr"
|
|
.Fc
|
|
.Bd -ragged -offset indent
|
|
Waits and validates the result of a subprocess spawned with
|
|
.Fn atf_utils_wait .
|
|
The validation involves checking that the subprocess exited cleanly and returned
|
|
the code specified in
|
|
.Fa expected_exit_status
|
|
and that its standard output and standard error match the strings given in
|
|
.Fa expected_stdout
|
|
and
|
|
.Fa expected_stderr .
|
|
.Pp
|
|
If any of the
|
|
.Fa expected_stdout
|
|
or
|
|
.Fa expected_stderr
|
|
strings are prefixed with
|
|
.Sq save: ,
|
|
then they specify the name of the file into which to store the stdout or stderr
|
|
of the subprocess, and no comparison is performed.
|
|
.Ed
|
|
.Sh EXAMPLES
|
|
The following shows a complete test program with a single test case that
|
|
validates the addition operator:
|
|
.Bd -literal -offset indent
|
|
#include <atf-c.h>
|
|
|
|
ATF_TC(addition);
|
|
ATF_TC_HEAD(addition, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr",
|
|
"Sample tests for the addition operator");
|
|
}
|
|
ATF_TC_BODY(addition, tc)
|
|
{
|
|
ATF_CHECK_EQ(0 + 0, 0);
|
|
ATF_CHECK_EQ(0 + 1, 1);
|
|
ATF_CHECK_EQ(1 + 0, 1);
|
|
|
|
ATF_CHECK_EQ(1 + 1, 2);
|
|
|
|
ATF_CHECK_EQ(100 + 200, 300);
|
|
}
|
|
|
|
ATF_TC(string_formatting);
|
|
ATF_TC_HEAD(string_formatting, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr",
|
|
"Sample tests for the snprintf");
|
|
}
|
|
ATF_TC_BODY(string_formatting, tc)
|
|
{
|
|
char buf[1024];
|
|
snprintf(buf, sizeof(buf), "a %s", "string");
|
|
ATF_CHECK_STREQ_MSG("a string", buf, "%s is not working");
|
|
}
|
|
|
|
ATF_TC(open_failure);
|
|
ATF_TC_HEAD(open_failure, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr",
|
|
"Sample tests for the open function");
|
|
}
|
|
ATF_TC_BODY(open_failure, tc)
|
|
{
|
|
ATF_CHECK_ERRNO(ENOENT, open("non-existent", O_RDONLY) == -1);
|
|
}
|
|
|
|
ATF_TC(known_bug);
|
|
ATF_TC_HEAD(known_bug, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr",
|
|
"Reproduces a known bug");
|
|
}
|
|
ATF_TC_BODY(known_bug, tc)
|
|
{
|
|
atf_tc_expect_fail("See bug number foo/bar");
|
|
ATF_CHECK_EQ(3, 1 + 1);
|
|
atf_tc_expect_pass();
|
|
ATF_CHECK_EQ(3, 1 + 2);
|
|
}
|
|
|
|
ATF_TP_ADD_TCS(tp)
|
|
{
|
|
ATF_TP_ADD_TC(tp, addition);
|
|
ATF_TP_ADD_TC(tp, string_formatting);
|
|
ATF_TP_ADD_TC(tp, open_failure);
|
|
ATF_TP_ADD_TC(tp, known_bug);
|
|
|
|
return atf_no_error();
|
|
}
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr atf-test-program 1 ,
|
|
.Xr atf-test-case 4 ,
|
|
.Xr atf 7
|