Add tests for ln(1)
* Verify that when creating a hard link to a symbolic link, '-L' option creates a hard link to the target of the symbolic link * Verify that when creating a hard link to a symbolic link, '-P' option creates a hard link to the symbolic link itself * Verify that if the target file already exists, '-f' option unlinks it so that link may occur * Verify that if the target file or directory is a symbolic link, '-shf' option prevents following the link * Verify that if the target file or directory is a symbolic link, '-snf' option prevents following the link * Verify that '-s' option creates a symbolic link * Verify that '-w' option produces a warning if the source of a symbolic link does not currently exist Submitted by: shivansh Reviewed by: asomers, ngie MFC after: 1 month Sponsored by: Google, Inc (GSoC 2017) Differential Revision: https://reviews.freebsd.org/D11084
This commit is contained in:
Alan Somers
parent
17e21cba3f
commit
670f178299
@ -1,6 +1,8 @@
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# @(#)Makefile 8.2 (Berkeley) 5/31/93
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# $FreeBSD$
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.include <src.opts.mk>
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PACKAGE=runtime
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PROG= ln
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MAN= ln.1 symlink.7
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@ -8,4 +10,8 @@ MAN= ln.1 symlink.7
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LINKS= ${BINDIR}/ln ${BINDIR}/link
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MLINKS= ln.1 link.1
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.if ${MK_TESTS} != "no"
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SUBDIR+= tests
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.endif
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.include <bsd.prog.mk>
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5
bin/ln/tests/Makefile
Normal file
5
bin/ln/tests/Makefile
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# $FreeBSD$
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ATF_TESTS_SH+= ln_test
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.include <bsd.test.mk>
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217
bin/ln/tests/ln_test.sh
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217
bin/ln/tests/ln_test.sh
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#
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# Copyright 2017 Shivansh Rai
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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set_umask()
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{
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if ! umask 022; then
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atf_fail "setting umask failed"
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fi
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}
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atf_test_case L_flag
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L_flag_head()
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{
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atf_set "descr" "Verify that when creating a hard link to a " \
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"symbolic link, '-L' option creates a hard" \
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"link to the target of the symbolic link"
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}
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L_flag_body()
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{
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set_umask
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atf_check touch A
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atf_check ln -s A B
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atf_check ln -L B C
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stat_A=$(stat -f %i A)
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stat_C=$(stat -f %i C)
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atf_check_equal "$stat_A" "$stat_C"
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atf_check -o inline:'B: symbolic link to A\n' file B
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}
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atf_test_case P_flag
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P_flag_head()
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{
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atf_set "descr" "Verify that when creating a hard link to a " \
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"symbolic link, '-P' option creates a hard " \
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"link to the symbolic link itself"
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}
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P_flag_body()
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{
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set_umask
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atf_check touch A
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atf_check ln -s A B
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atf_check ln -P B C
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stat_B=$(stat -f %i B)
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stat_C=$(stat -f %i C)
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atf_check_equal "$stat_B" "$stat_C"
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}
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atf_test_case f_flag
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f_flag_head()
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{
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atf_set "descr" "Verify that if the target file already exists, " \
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"'-f' option unlinks it so that link may occur"
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}
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f_flag_body()
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{
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set_umask
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atf_check touch A B
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atf_check ln -f A B
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stat_A=$(stat -f %i A)
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stat_B=$(stat -f %i B)
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atf_check_equal "$stat_A" "$stat_B"
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}
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atf_test_case target_exists_hard
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target_exists_hard_head()
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{
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atf_set "descr" "Verify whether creating a hard link fails if the " \
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"target file already exists"
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}
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target_exists_hard_body()
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{
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atf_check touch A B
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atf_check -s exit:1 -e inline:'ln: B: File exists\n' \
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ln A B
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}
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atf_test_case target_exists_symbolic
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target_exists_symbolic_head()
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{
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atf_set "descr" "Verify whether creating a symbolic link fails if " \
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"the target file already exists"
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}
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target_exists_symbolic_body()
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{
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atf_check touch A B
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atf_check -s exit:1 -e inline:'ln: B: File exists\n' \
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ln -s A B
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}
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atf_test_case shf_flag_dir
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shf_flag_dir_head() {
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atf_set "descr" "Verify that if the target directory is a symbolic " \
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"link, '-shf' option prevents following the link"
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}
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shf_flag_dir_body()
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{
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atf_check mkdir -m 0777 A B
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atf_check ln -s A C
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atf_check ln -shf B C
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atf_check -o inline:'C: symbolic link to B\n' file C
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}
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atf_test_case snf_flag_dir
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snf_flag_dir_head() {
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atf_set "descr" "Verify that if the target directory is a symbolic " \
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"link, '-snf' option prevents following the link"
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}
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snf_flag_dir_body()
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{
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atf_check mkdir -m 0777 A B
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atf_check ln -s A C
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atf_check ln -snf B C
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atf_check -o inline:'C: symbolic link to B\n' file C
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}
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atf_test_case sf_flag
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sf_flag_head()
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{
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atf_set "descr" "Verify that if the target file already exists, " \
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"'-sf' option unlinks it and creates a symbolic link " \
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"to the source file"
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}
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sf_flag_body()
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{
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atf_check touch A B
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atf_check ln -sf A B
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atf_check -o inline:'B: symbolic link to A\n' file B
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}
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atf_test_case s_flag
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s_flag_head()
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{
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atf_set "descr" "Verify that '-s' option creates a symbolic link"
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}
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s_flag_body()
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{
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set_umask
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atf_check touch A
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atf_check ln -s A B
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atf_check -o inline:'B: symbolic link to A\n' file B
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}
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atf_test_case s_flag_broken
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s_flag_broken_head()
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{
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atf_set "descr" "Verify that if the source file does not exists, '-s' " \
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"option creates a broken symbolic link to the source file"
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}
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s_flag_broken_body()
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{
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atf_check ln -s A B
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atf_check -o inline:'B: broken symbolic link to A\n' file B
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}
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atf_test_case sw_flag
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sw_flag_head()
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{
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atf_set "descr" "Verify that '-sw' option produces a warning if the " \
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"source of a symbolic link does not currently exist"
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}
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sw_flag_body()
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{
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atf_check -s exit:0 -e inline:'ln: warning: A: No such file or directory\n' \
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ln -sw A B
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atf_check -o inline:'B: broken symbolic link to A\n' file B
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}
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atf_init_test_cases()
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{
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atf_add_test_case L_flag
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atf_add_test_case P_flag
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atf_add_test_case f_flag
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atf_add_test_case target_exists_hard
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atf_add_test_case target_exists_symbolic
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atf_add_test_case shf_flag_dir
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atf_add_test_case snf_flag_dir
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atf_add_test_case sf_flag
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atf_add_test_case s_flag
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atf_add_test_case s_flag_broken
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atf_add_test_case sw_flag
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}
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@ -18,6 +18,8 @@
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..
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expr
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..
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ln
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..
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ls
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..
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mv
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