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git/t/t4056-diff-order.sh
Jonathan Nieder 0df49bef95 diff test: reading a directory as a file need not error out
There is no guarantee that strbuf_read_file must error out for
directories.  On some operating systems (e.g., Debian GNU/kFreeBSD
wheezy), reading a directory gives its raw content:

	$ head -c5 < / | cat -A
	^AM-|^_^@^L$

As a result, 'git diff -O/' succeeds instead of erroring out on
these systems, causing t4056.5 "orderfile is a directory" to fail.

On some weird OS it might even make sense to pass a directory to the
-O option and this is not a common user mistake that needs catching.
Remove the test.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-10 15:30:45 -08:00

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#!/bin/sh
test_description='diff order'
. ./test-lib.sh
create_files () {
echo "$1" >a.h &&
echo "$1" >b.c &&
echo "$1" >c/Makefile &&
echo "$1" >d.txt &&
git add a.h b.c c/Makefile d.txt &&
git commit -m"$1"
}
test_expect_success 'setup' '
mkdir c &&
create_files 1 &&
create_files 2 &&
cat >order_file_1 <<-\EOF &&
*Makefile
*.txt
*.h
EOF
cat >order_file_2 <<-\EOF &&
*Makefile
*.h
*.c
EOF
cat >expect_none <<-\EOF &&
a.h
b.c
c/Makefile
d.txt
EOF
cat >expect_1 <<-\EOF &&
c/Makefile
d.txt
a.h
b.c
EOF
cat >expect_2 <<-\EOF
c/Makefile
a.h
b.c
d.txt
EOF
'
test_expect_success "no order (=tree object order)" '
git diff --name-only HEAD^..HEAD >actual &&
test_cmp expect_none actual
'
test_expect_success 'missing orderfile' '
rm -f bogus_file &&
test_must_fail git diff -Obogus_file --name-only HEAD^..HEAD
'
test_expect_success POSIXPERM,SANITY 'unreadable orderfile' '
>unreadable_file &&
chmod -r unreadable_file &&
test_must_fail git diff -Ounreadable_file --name-only HEAD^..HEAD
'
for i in 1 2
do
test_expect_success "orderfile using option ($i)" '
git diff -Oorder_file_$i --name-only HEAD^..HEAD >actual &&
test_cmp expect_$i actual
'
test_expect_success PIPE "orderfile is fifo ($i)" '
rm -f order_fifo &&
mkfifo order_fifo &&
{
cat order_file_$i >order_fifo &
} &&
git diff -O order_fifo --name-only HEAD^..HEAD >actual &&
wait &&
test_cmp expect_$i actual
'
test_expect_success "orderfile using config ($i)" '
git -c diff.orderfile=order_file_$i diff --name-only HEAD^..HEAD >actual &&
test_cmp expect_$i actual
'
test_expect_success "cancelling configured orderfile ($i)" '
git -c diff.orderfile=order_file_$i diff -O/dev/null --name-only HEAD^..HEAD >actual &&
test_cmp expect_none actual
'
done
test_done