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git/t/t4023-diff-rename-typechange.sh
Johannes Sixt 704a3143d5 Use prerequisite tags to skip tests that depend on symbolic links
Many tests depend on that symbolic links work.  This introduces a check
that sets the prerequisite tag SYMLINKS if the file system supports
symbolic links.  Since so many tests have to check for this prerequisite,
we do the check in test-lib.sh, so that we don't need to repeat the test
in many scripts.

To check for 'ln -s' failures, you can use a FAT partition on Linux:

$ mkdosfs -C git-on-fat 1000000
$ sudo mount -o loop,uid=j6t,gid=users,shortname=winnt git-on-fat /mnt

Clone git to /mnt and

$ GIT_SKIP_TESTS='t0001.1[34] t0010 t1301 t403[34] t4129.[47] t5701.7
          t7701.3 t9100 t9101.26 t9119 t9124.[67] t9200.10 t9600.6' \
        make test

(These additionally skipped tests depend on POSIX permissions that FAT on
Linux does not provide.)

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
2009-03-22 17:26:44 +01:00

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#!/bin/sh
test_description='typechange rename detection'
. ./test-lib.sh
if ! test_have_prereq SYMLINKS
then
say 'Symbolic links not supported, skipping tests.'
test_done
exit
fi
test_expect_success setup '
rm -f foo bar &&
cat "$TEST_DIRECTORY"/../COPYING >foo &&
ln -s linklink bar &&
git add foo bar &&
git commit -a -m Initial &&
git tag one &&
rm -f foo bar &&
cat "$TEST_DIRECTORY"/../COPYING >bar &&
ln -s linklink foo &&
git add foo bar &&
git commit -a -m Second &&
git tag two &&
rm -f foo bar &&
cat "$TEST_DIRECTORY"/../COPYING >foo &&
git add foo &&
git commit -a -m Third &&
git tag three &&
mv foo bar &&
ln -s linklink foo &&
git add foo bar &&
git commit -a -m Fourth &&
git tag four &&
# This is purely for sanity check
rm -f foo bar &&
cat "$TEST_DIRECTORY"/../COPYING >foo &&
cat "$TEST_DIRECTORY"/../Makefile >bar &&
git add foo bar &&
git commit -a -m Fifth &&
git tag five &&
rm -f foo bar &&
cat "$TEST_DIRECTORY"/../Makefile >foo &&
cat "$TEST_DIRECTORY"/../COPYING >bar &&
git add foo bar &&
git commit -a -m Sixth &&
git tag six
'
test_expect_success 'cross renames to be detected for regular files' '
git diff-tree five six -r --name-status -B -M | sort >actual &&
{
echo "R100 foo bar"
echo "R100 bar foo"
} | sort >expect &&
test_cmp expect actual
'
test_expect_success 'cross renames to be detected for typechange' '
git diff-tree one two -r --name-status -B -M | sort >actual &&
{
echo "R100 foo bar"
echo "R100 bar foo"
} | sort >expect &&
test_cmp expect actual
'
test_expect_success 'moves and renames' '
git diff-tree three four -r --name-status -B -M | sort >actual &&
{
echo "R100 foo bar"
echo "T100 foo"
} | sort >expect &&
test_cmp expect actual
'
test_done