xref: /src/tests/fs/tmpfs/t_truncate.sh

# $NetBSD: t_truncate.sh,v 1.5 2025/01/07 17:36:45 andvar Exp $
#
# Copyright (c) 2005, 2006, 2007 The NetBSD Foundation, Inc.
# All rights reserved.
#
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# modification, are permitted provided that the following conditions
# are met:
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#    notice, this list of conditions and the following disclaimer.
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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atf_test_case basic
basic_head() {
	atf_set "descr" "Verifies that the truncate operation works"
	atf_set "require.user" "root"
}
basic_body() {
	test_mount

	echo "Creating big file"
	jot 10000 >a || atf_fail "Failed to create big file"
	echo "Truncating the file to a smaller size"
	echo foo >a || atf_fail "Failed to truncate file to a smaller size"
	[ $(md5 a | cut -d ' ' -f 4) = d3b07384d113edec49eaa6238ad5ff00 ] || \
	    echo "Truncated file is incorrect"

	echo "Truncating to zero bytes"
	>a || atf_fail "Failed to truncate to 0"
	echo "Truncating to zero bytes, second try"
	>a || atf_fail "Failed to re-truncate to 0"

	test_unmount
}

atf_init_test_cases() {
	. $(atf_get_srcdir)/../h_funcs.subr
	. $(atf_get_srcdir)/h_funcs.subr

	atf_add_test_case basic
}