git/t/t4011-diff-symlink.sh
Junio C Hamano 5df9140c92 t4011: "sleep 1" is not enough on FAT
This test depended on "sleep 1" to be enough to dirty the index
entry for a symlink.  Alex noticed that on his Cygwin installation
"sleep 1" was sometimes not enough, and after further discussion with
Christopher Faylor, it was brought up that on FAT filesystem timestamp
granularity is 2 seconds so sleeping 1 second is not enough.

For now this patch takes an easy workaround of sleeping for 3 seconds.

Very strictly speaking, POSIX requires lstat to fill only S_IFMT part
of st_mode and st_size for symlinks, and depending on timestamp might
be considered a bug, but we depend on that anyway, so it is better to
test that.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-21 19:33:22 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Johannes Schindelin
#
test_description='Test diff of symlinks.
'
. ./test-lib.sh
. ../diff-lib.sh
cat > expected << EOF
diff --git a/frotz b/frotz
new file mode 120000
index 0000000..7c465af
--- /dev/null
+++ b/frotz
@@ -0,0 +1 @@
+xyzzy
\ No newline at end of file
EOF
test_expect_success \
'diff new symlink' \
'ln -s xyzzy frotz &&
git-update-index &&
tree=$(git-write-tree) &&
git-update-index --add frotz &&
GIT_DIFF_OPTS=--unified=0 git-diff-index -M -p $tree > current &&
compare_diff_patch current expected'
test_expect_success \
'diff unchanged symlink' \
'tree=$(git-write-tree) &&
git-update-index frotz &&
test -z "$(git-diff-index --name-only $tree)"'
cat > expected << EOF
diff --git a/frotz b/frotz
deleted file mode 120000
index 7c465af..0000000
--- a/frotz
+++ /dev/null
@@ -1 +0,0 @@
-xyzzy
\ No newline at end of file
EOF
test_expect_success \
'diff removed symlink' \
'rm frotz &&
git-diff-index -M -p $tree > current &&
compare_diff_patch current expected'
cat > expected << EOF
diff --git a/frotz b/frotz
EOF
test_expect_success \
'diff identical, but newly created symlink' \
'sleep 3 &&
ln -s xyzzy frotz &&
git-diff-index -M -p $tree > current &&
compare_diff_patch current expected'
cat > expected << EOF
diff --git a/frotz b/frotz
index 7c465af..df1db54 120000
--- a/frotz
+++ b/frotz
@@ -1 +1 @@
-xyzzy
\ No newline at end of file
+yxyyz
\ No newline at end of file
EOF
test_expect_success \
'diff different symlink' \
'rm frotz &&
ln -s yxyyz frotz &&
git-diff-index -M -p $tree > current &&
compare_diff_patch current expected'
test_done