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#!/bin/sh
#
# Copyright (c) 2005 Johannes Schindelin
#
test_description='Test diff of symlinks.
'
. ./test-lib.sh
. "$TEST_DIRECTORY"/diff-lib.sh
# Print the short OID of a symlink with the given name.
symlink_oid () {
local oid=$(printf "%s" "$1" | git hash-object --stdin) &&
git rev-parse --short "$oid"
}
# Print the short OID of the given file.
short_oid () {
local oid=$(git hash-object "$1") &&
git rev-parse --short "$oid"
}
test_expect_success 'diff new symlink and file' '
symlink=$(symlink_oid xyzzy) &&
cat >expected <<-EOF &&
diff --git a/frotz b/frotz
new file mode 120000
index 0000000..$symlink
--- /dev/null
+++ b/frotz
@@ -0,0 +1 @@
+xyzzy
\ No newline at end of file
diff --git a/nitfol b/nitfol
new file mode 100644
index 0000000..$symlink
--- /dev/null
+++ b/nitfol
@@ -0,0 +1 @@
+xyzzy
EOF
# the empty tree
git update-index &&
tree=$(git write-tree) &&
test_ln_s_add xyzzy frotz &&
echo xyzzy >nitfol &&
git update-index --add nitfol &&
GIT_DIFF_OPTS=--unified=0 git diff-index -M -p $tree >current &&
compare_diff_patch expected current
'
test_expect_success 'diff unchanged symlink and file' '
tree=$(git write-tree) &&
git update-index frotz nitfol &&
test -z "$(git diff-index --name-only $tree)"
'
test_expect_success 'diff removed symlink and file' '
cat >expected <<-EOF &&
diff --git a/frotz b/frotz
deleted file mode 120000
index $symlink..0000000
--- a/frotz
+++ /dev/null
@@ -1 +0,0 @@
-xyzzy
\ No newline at end of file
diff --git a/nitfol b/nitfol
deleted file mode 100644
index $symlink..0000000
--- a/nitfol
+++ /dev/null
@@ -1 +0,0 @@
-xyzzy
EOF
mv frotz frotz2 &&
mv nitfol nitfol2 &&
git diff-index -M -p $tree >current &&
compare_diff_patch expected current
'
test_expect_success 'diff identical, but newly created symlink and file' '
>expected &&
rm -f frotz nitfol &&
echo xyzzy >nitfol &&
test-tool chmtime +10 nitfol &&
if test_have_prereq SYMLINKS
then
ln -s xyzzy frotz
else
printf xyzzy >frotz
# the symlink property propagates from the index
fi &&
git diff-index -M -p $tree >current &&
compare_diff_patch expected current &&
>expected &&
git diff-index -M -p -w $tree >current &&
compare_diff_patch expected current
'
test_expect_success 'diff different symlink and file' '
new=$(symlink_oid yxyyz) &&
cat >expected <<-EOF &&
diff --git a/frotz b/frotz
index $symlink..$new 120000
--- a/frotz
+++ b/frotz
@@ -1 +1 @@
-xyzzy
\ No newline at end of file
+yxyyz
\ No newline at end of file
diff --git a/nitfol b/nitfol
index $symlink..$new 100644
--- a/nitfol
+++ b/nitfol
@@ -1 +1 @@
-xyzzy
+yxyyz
EOF
rm -f frotz &&
if test_have_prereq SYMLINKS
then
ln -s yxyyz frotz
else
printf yxyyz >frotz
# the symlink property propagates from the index
fi &&
echo yxyyz >nitfol &&
git diff-index -M -p $tree >current &&
compare_diff_patch expected current
'
test_expect_success SYMLINKS 'diff symlinks with non-existing targets' '
ln -s narf pinky &&
ln -s take\ over brain &&
test_must_fail git diff --no-index pinky brain >output 2>output.err &&
grep narf output &&
test_must_be_empty output.err
'
test_expect_success SYMLINKS 'setup symlinks with attributes' '
echo "*.bin diff=bin" >>.gitattributes &&
echo content >file.bin &&
ln -s file.bin link.bin &&
git add -N file.bin link.bin
'
test_expect_success SYMLINKS 'symlinks do not respect userdiff config by path' '
file=$(short_oid file.bin) &&
link=$(symlink_oid file.bin) &&
cat >expect <<-EOF &&
diff --git a/file.bin b/file.bin
new file mode 100644
index 0000000..$file
Binary files /dev/null and b/file.bin differ
diff --git a/link.bin b/link.bin
new file mode 120000
index 0000000..$link
--- /dev/null
+++ b/link.bin
@@ -0,0 +1 @@
+file.bin
\ No newline at end of file
EOF
git config diff.bin.binary true &&
git diff file.bin link.bin >actual &&
test_cmp expect actual
'
test_done
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