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git/t/t4030-diff-textconv.sh
Jeff King ef90ab66e8 pickaxe: use textconv for -S counting
We currently just look at raw blob data when using "-S" to
pickaxe. This is mostly historical, as pickaxe predates the
textconv feature. If the user has bothered to define a
textconv filter, it is more likely that their search string will be
on the textconv output, as that is what they will see in the
diff (and we do not even provide a mechanism for them to
search for binary needles that contain NUL characters).

This patch teaches "-S" to use textconv, just as we
already do for "-G".

Signed-off-by: Jeff King <peff@peff.net>
2012-10-28 08:48:17 -04:00

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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
# make a symlink the hard way that works on symlink-challenged file systems
test_expect_success 'textconv does not act on symlinks' '
printf frotz > file &&
git add file &&
git ls-files -s | sed -e s/100644/120000/ |
git update-index --index-info &&
git commit -m typechange &&
git show >diff &&
find_diff <diff >actual &&
test_cmp expect.typechange actual
'
test_done