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git/t/t4032-diff-inter-hunk-context.sh
René Scharfe 6d0e674a57 diff: add option to show context between close hunks
Merge two hunks if there is only the specified number of otherwise unshown
context between them.  For --inter-hunk-context=1, the resulting patch has
the same number of lines but shows uninterrupted context instead of a
context header line in between.

Patches generated with this option are easier to read but are also more
likely to conflict if the file to be patched contains other changes.

This patch keeps the default for this option at 0.  It is intended to just
make the feature available in order to see its advantages and downsides.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-29 01:05:21 -08:00

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#!/bin/sh
test_description='diff hunk fusing'
. ./test-lib.sh
f() {
echo $1
i=1
while test $i -le $2
do
echo $i
i=$(expr $i + 1)
done
echo $3
}
t() {
case $# in
4) hunks=$4; cmd="diff -U$3";;
5) hunks=$5; cmd="diff -U$3 --inter-hunk-context=$4";;
esac
label="$cmd, $1 common $2"
file=f$1
expected=expected.$file.$3.$hunks
if ! test -f $file
then
f A $1 B >$file
git add $file
git commit -q -m. $file
f X $1 Y >$file
fi
test_expect_success "$label: count hunks ($hunks)" "
test $(git $cmd $file | grep '^@@ ' | wc -l) = $hunks
"
test -f $expected &&
test_expect_success "$label: check output" "
git $cmd $file | grep -v '^index ' >actual &&
test_cmp $expected actual
"
}
cat <<EOF >expected.f1.0.1 || exit 1
diff --git a/f1 b/f1
--- a/f1
+++ b/f1
@@ -1,3 +1,3 @@
-A
+X
1
-B
+Y
EOF
cat <<EOF >expected.f1.0.2 || exit 1
diff --git a/f1 b/f1
--- a/f1
+++ b/f1
@@ -1 +1 @@
-A
+X
@@ -3 +3 @@ A
-B
+Y
EOF
# common lines ctx intrctx hunks
t 1 line 0 2
t 1 line 0 0 2
t 1 line 0 1 1
t 1 line 0 2 1
t 1 line 1 1
t 2 lines 0 2
t 2 lines 0 0 2
t 2 lines 0 1 2
t 2 lines 0 2 1
t 2 lines 1 1
t 3 lines 1 2
t 3 lines 1 0 2
t 3 lines 1 1 1
t 3 lines 1 2 1
t 9 lines 3 2
t 9 lines 3 2 2
t 9 lines 3 3 1
test_done