git-commit-vandalism/t/t4030-diff-textconv.sh
Johannes Sixt 889c6f0e4d tests: use test_ln_s_add to remove SYMLINKS prerequisite (trivial cases)
There are many instances where the treatment of symbolic links in the
object model and the algorithms are tested, but where it is not
necessary to actually have a symbolic link in the worktree. Make
adjustments to the tests and remove the SYMLINKS prerequisite when
appropriate in trivial cases, where "trivial" means:

- merely a replacement of 'ln -s a b && git add b' by test_ln_s_add
  is needed;

- a test for symbolic link on the file system can be split off (and
  remains protected by SYMLINKS);

- existing code is equivalent to test_ln_s_add.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-06-07 15:01:45 -07:00

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#!/bin/sh
test_description='diff.*.textconv tests'
. ./test-lib.sh
find_diff() {
sed '1,/^index /d' | sed '/^-- $/,$d'
}
cat >expect.binary <<'EOF'
Binary files a/file and b/file differ
EOF
cat >expect.text <<'EOF'
--- a/file
+++ b/file
@@ -1 +1,2 @@
0
+1
EOF
cat >hexdump <<'EOF'
#!/bin/sh
"$PERL_PATH" -e '$/ = undef; $_ = <>; s/./ord($&)/ge; print $_' < "$1"
EOF
chmod +x hexdump
test_expect_success 'setup binary file with history' '
printf "\\0\\n" >file &&
git add file &&
git commit -m one &&
printf "\\01\\n" >>file &&
git add file &&
git commit -m two
'
test_expect_success 'file is considered binary by porcelain' '
git diff HEAD^ HEAD >diff &&
find_diff <diff >actual &&
test_cmp expect.binary actual
'
test_expect_success 'file is considered binary by plumbing' '
git diff-tree -p HEAD^ HEAD >diff &&
find_diff <diff >actual &&
test_cmp expect.binary actual
'
test_expect_success 'setup textconv filters' '
echo file diff=foo >.gitattributes &&
git config diff.foo.textconv "\"$(pwd)\""/hexdump &&
git config diff.fail.textconv false
'
test_expect_success 'diff produces text' '
git diff HEAD^ HEAD >diff &&
find_diff <diff >actual &&
test_cmp expect.text actual
'
test_expect_success 'diff-tree produces binary' '
git diff-tree -p HEAD^ HEAD >diff &&
find_diff <diff >actual &&
test_cmp expect.binary actual
'
test_expect_success 'log produces text' '
git log -1 -p >log &&
find_diff <log >actual &&
test_cmp expect.text actual
'
test_expect_success 'format-patch produces binary' '
git format-patch --no-binary --stdout HEAD^ >patch &&
find_diff <patch >actual &&
test_cmp expect.binary actual
'
test_expect_success 'status -v produces text' '
git reset --soft HEAD^ &&
git status -v >diff &&
find_diff <diff >actual &&
test_cmp expect.text actual &&
git reset --soft HEAD@{1}
'
test_expect_success 'grep-diff (-G) operates on textconv data (add)' '
echo one >expect &&
git log --root --format=%s -G0 >actual &&
test_cmp expect actual
'
test_expect_success 'grep-diff (-G) operates on textconv data (modification)' '
echo two >expect &&
git log --root --format=%s -G1 >actual &&
test_cmp expect actual
'
test_expect_success 'pickaxe (-S) operates on textconv data (add)' '
echo one >expect &&
git log --root --format=%s -S0 >actual &&
test_cmp expect actual
'
test_expect_success 'pickaxe (-S) operates on textconv data (modification)' '
echo two >expect &&
git log --root --format=%s -S1 >actual &&
test_cmp expect actual
'
cat >expect.stat <<'EOF'
file | Bin 2 -> 4 bytes
1 file changed, 0 insertions(+), 0 deletions(-)
EOF
test_expect_success 'diffstat does not run textconv' '
echo file diff=fail >.gitattributes &&
git diff --stat HEAD^ HEAD >actual &&
test_i18ncmp expect.stat actual &&
head -n1 <expect.stat >expect.line1 &&
head -n1 <actual >actual.line1 &&
test_cmp expect.line1 actual.line1
'
# restore working setup
echo file diff=foo >.gitattributes
cat >expect.typechange <<'EOF'
--- a/file
+++ /dev/null
@@ -1,2 +0,0 @@
-0
-1
diff --git a/file b/file
new file mode 120000
index 0000000..67be421
--- /dev/null
+++ b/file
@@ -0,0 +1 @@
+frotz
\ No newline at end of file
EOF
test_expect_success 'textconv does not act on symlinks' '
rm -f file &&
test_ln_s_add frotz file &&
git commit -m typechange &&
git show >diff &&
find_diff <diff >actual &&
test_cmp expect.typechange actual
'
test_done