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git/t/t4030-diff-textconv.sh
Zbigniew Jędrzejewski-Szmek dc801e71a7 diff --stat: use less columns for change counts
Number of columns required for change counts is now computed based on
the maximum number of changed lines instead of being fixed. This means
that usually a few more columns will be available for the filenames
and the graph.

The graph width logic is also modified to include enough space for
"Bin XXX -> YYY bytes".

If changes to binary files are mixed with changes to text files,
change counts are padded to take at least three columns. And the other
way around, if change counts require more than three columns, then
"Bin"s are padded to align with the change count. This way, the +-
part starts in the same column as "XXX -> YYY" part for binary files.
This makes the graph easier to parse visually thanks to the empty
column. This mimics the layout of diff --stat before this change.

Tests and the tutorial are updated to reflect the new --stat output.
This means either the removal of extra padding and/or the addition of
up to three extra characters to truncated filenames. One test is added
to check the graph alignment when a binary file change and text file
change of more than 999 lines are committed together.

Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-30 14:17:26 -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 -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}
'
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