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diff --git a/unit/atf-src/atf-sh/misc_helpers.sh b/unit/atf-src/atf-sh/misc_helpers.sh
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+# Copyright (c) 2007 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
+# CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# -------------------------------------------------------------------------
+# Helper tests for "t_atf_check".
+# -------------------------------------------------------------------------
+
+atf_test_case atf_check_info_ok
+atf_check_info_ok_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_info_ok_body()
+{
+    atf_check -s eq:0 -o empty -e empty true
+}
+
+atf_test_case atf_check_info_fail
+atf_check_info_fail_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_info_fail_body()
+{
+    # In Solaris, /usr/bin/false returns 255 rather than 1.  Use the
+    # built-in version for the check.
+    atf_check -s eq:1 -o empty -e empty sh -c "false"
+}
+
+atf_test_case atf_check_expout_mismatch
+atf_check_expout_mismatch_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_expout_mismatch_body()
+{
+    cat >expout <<SECONDEOF
+foo
+SECONDEOF
+    atf_check -s eq:0 -o file:expout -e empty echo bar
+}
+
+atf_test_case atf_check_experr_mismatch
+atf_check_experr_mismatch_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_experr_mismatch_body()
+{
+    cat >experr <<SECONDEOF
+foo
+SECONDEOF
+    atf_check -s eq:0 -o empty -e file:experr -x 'echo bar 1>&2'
+}
+
+atf_test_case atf_check_null_stdout
+atf_check_null_stdout_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_null_stdout_body()
+{
+    atf_check -s eq:0 -o empty -e empty echo "These are the contents"
+}
+
+atf_test_case atf_check_null_stderr
+atf_check_null_stderr_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_null_stderr_body()
+{
+    atf_check -s eq:0 -o empty -e empty -x 'echo "These are the contents" 1>&2'
+}
+
+atf_test_case atf_check_equal_ok
+atf_check_equal_ok_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_equal_ok_body()
+{
+    atf_check_equal a a
+}
+
+atf_test_case atf_check_equal_fail
+atf_check_equal_fail_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_equal_fail_body()
+{
+    atf_check_equal a b
+}
+
+atf_test_case atf_check_equal_eval_ok
+atf_check_equal_eval_ok_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_equal_eval_ok_body()
+{
+    x=a
+    y=a
+    atf_check_equal '${x}' '${y}'
+}
+
+atf_test_case atf_check_equal_eval_fail
+atf_check_equal_eval_fail_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+}
+atf_check_equal_eval_fail_body()
+{
+    x=a
+    y=b
+    atf_check_equal '${x}' '${y}'
+}
+
+atf_test_case atf_check_timeout
+atf_check_timeout_head()
+{
+    atf_set "descr" "Helper test case for the t_atf_check test program"
+    atf_set "timeout" 1
+}
+atf_check_timeout_body()
+{
+    atf_check true
+    atf_check sleep 42
+}
+
+# -------------------------------------------------------------------------
+# Helper tests for "t_config".
+# -------------------------------------------------------------------------
+
+atf_test_case config_get
+config_get_head()
+{
+    atf_set "descr" "Helper test case for the t_config test program"
+}
+config_get_body()
+{
+    if atf_config_has ${TEST_VARIABLE}; then
+        echo "${TEST_VARIABLE} = $(atf_config_get ${TEST_VARIABLE})"
+    fi
+}
+
+atf_test_case config_has
+config_has_head()
+{
+    atf_set "descr" "Helper test case for the t_config test program"
+}
+config_has_body()
+{
+    if atf_config_has ${TEST_VARIABLE}; then
+        echo "${TEST_VARIABLE} found"
+    else
+        echo "${TEST_VARIABLE} not found"
+    fi
+}
+
+# -------------------------------------------------------------------------
+# Helper tests for "t_normalize".
+# -------------------------------------------------------------------------
+
+atf_test_case normalize
+normalize_head()
+{
+    atf_set "descr" "Helper test case for the t_normalize test program"
+    atf_set "a.b" "test value 1"
+    atf_set "c-d" "test value 2"
+}
+normalize_body()
+{
+    echo "a.b: $(atf_get a.b)"
+    echo "c-d: $(atf_get c-d)"
+}
+
+# -------------------------------------------------------------------------
+# Helper tests for "t_tc".
+# -------------------------------------------------------------------------
+
+atf_test_case tc_pass_true
+tc_pass_true_head()
+{
+    atf_set "descr" "Helper test case for the t_tc test program"
+}
+tc_pass_true_body()
+{
+    true
+}
+
+atf_test_case tc_pass_false
+tc_pass_false_head()
+{
+    atf_set "descr" "Helper test case for the t_tc test program"
+}
+tc_pass_false_body()
+{
+    false
+}
+
+atf_test_case tc_pass_return_error
+tc_pass_return_error_head()
+{
+    atf_set "descr" "Helper test case for the t_tc test program"
+}
+tc_pass_return_error_body()
+{
+    return 1
+}
+
+atf_test_case tc_fail
+tc_fail_head()
+{
+    atf_set "descr" "Helper test case for the t_tc test program"
+}
+tc_fail_body()
+{
+    echo "An error" 1>&2
+    exit 1
+}
+
+atf_test_case tc_missing_body
+tc_missing_body_head()
+{
+    atf_set "descr" "Helper test case for the t_tc test program"
+}
+
+# -------------------------------------------------------------------------
+# Helper tests for "t_tp".
+# -------------------------------------------------------------------------
+
+atf_test_case tp_srcdir
+tp_srcdir_head()
+{
+    atf_set "descr" "Helper test case for the t_tp test program"
+}
+tp_srcdir_body()
+{
+    echo "Calling helper"
+    helper_subr || atf_fail "Could not call helper subroutine"
+}
+
+# -------------------------------------------------------------------------
+# Main.
+# -------------------------------------------------------------------------
+
+atf_init_test_cases()
+{
+    # Add helper tests for t_atf_check.
+    atf_add_test_case atf_check_info_ok
+    atf_add_test_case atf_check_info_fail
+    atf_add_test_case atf_check_expout_mismatch
+    atf_add_test_case atf_check_experr_mismatch
+    atf_add_test_case atf_check_null_stdout
+    atf_add_test_case atf_check_null_stderr
+    atf_add_test_case atf_check_equal_ok
+    atf_add_test_case atf_check_equal_fail
+    atf_add_test_case atf_check_equal_eval_ok
+    atf_add_test_case atf_check_equal_eval_fail
+    atf_add_test_case atf_check_timeout
+
+    # Add helper tests for t_config.
+    atf_add_test_case config_get
+    atf_add_test_case config_has
+
+    # Add helper tests for t_normalize.
+    atf_add_test_case normalize
+
+    # Add helper tests for t_tc.
+    atf_add_test_case tc_pass_true
+    atf_add_test_case tc_pass_false
+    atf_add_test_case tc_pass_return_error
+    atf_add_test_case tc_fail
+    atf_add_test_case tc_missing_body
+
+    # Add helper tests for t_tp.
+    [ -f $(atf_get_srcdir)/subrs ] && . $(atf_get_srcdir)/subrs
+    atf_add_test_case tp_srcdir
+}
+
+# vim: syntax=sh:expandtab:shiftwidth=4:softtabstop=4