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git/t/t4003-diff-rename-1.sh
Linus Torvalds 0940e5f211 diffcore-rename: properly honor the difference between -M and -C
We would allow rename detection to do copy detection even when asked
purely for renames.  That confuses users, but more importantly it can
terminally confuse the recursive merge rename logic.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-18 22:26:28 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
test_description='More rename detection
'
. ./test-lib.sh
. "$TEST_DIRECTORY"/diff-lib.sh ;# test-lib chdir's into trash
test_expect_success \
'prepare reference tree' \
'cat "$TEST_DIRECTORY"/../COPYING >COPYING &&
echo frotz >rezrov &&
git update-index --add COPYING rezrov &&
tree=$(git write-tree) &&
echo $tree'
test_expect_success \
'prepare work tree' \
'sed -e 's/HOWEVER/However/' <COPYING >COPYING.1 &&
sed -e 's/GPL/G.P.L/g' <COPYING >COPYING.2 &&
rm -f COPYING &&
git update-index --add --remove COPYING COPYING.?'
# tree has COPYING and rezrov. work tree has COPYING.1 and COPYING.2,
# both are slightly edited, and unchanged rezrov. So we say you
# copy-and-edit one, and rename-and-edit the other. We do not say
# anything about rezrov.
GIT_DIFF_OPTS=--unified=0 git diff-index -C -p $tree >current
cat >expected <<\EOF
diff --git a/COPYING b/COPYING.1
copy from COPYING
copy to COPYING.1
--- a/COPYING
+++ b/COPYING.1
@@ -6 +6 @@
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
+ However, in order to allow a migration to GPLv3 if that seems like
diff --git a/COPYING b/COPYING.2
rename from COPYING
rename to COPYING.2
--- a/COPYING
+++ b/COPYING.2
@@ -2 +2 @@
- Note that the only valid version of the GPL as far as this project
+ Note that the only valid version of the G.P.L as far as this project
@@ -6 +6 @@
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
+ HOWEVER, in order to allow a migration to G.P.Lv3 if that seems like
@@ -12 +12 @@
- This file is licensed under the GPL v2, or a later version
+ This file is licensed under the G.P.L v2, or a later version
EOF
test_expect_success \
'validate output from rename/copy detection (#1)' \
'compare_diff_patch current expected'
test_expect_success \
'prepare work tree again' \
'mv COPYING.2 COPYING &&
git update-index --add --remove COPYING COPYING.1 COPYING.2'
# tree has COPYING and rezrov. work tree has COPYING and COPYING.1,
# both are slightly edited, and unchanged rezrov. So we say you
# edited one, and copy-and-edit the other. We do not say
# anything about rezrov.
GIT_DIFF_OPTS=--unified=0 git diff-index -C -p $tree >current
cat >expected <<\EOF
diff --git a/COPYING b/COPYING
--- a/COPYING
+++ b/COPYING
@@ -2 +2 @@
- Note that the only valid version of the GPL as far as this project
+ Note that the only valid version of the G.P.L as far as this project
@@ -6 +6 @@
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
+ HOWEVER, in order to allow a migration to G.P.Lv3 if that seems like
@@ -12 +12 @@
- This file is licensed under the GPL v2, or a later version
+ This file is licensed under the G.P.L v2, or a later version
diff --git a/COPYING b/COPYING.1
copy from COPYING
copy to COPYING.1
--- a/COPYING
+++ b/COPYING.1
@@ -6 +6 @@
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
+ However, in order to allow a migration to GPLv3 if that seems like
EOF
test_expect_success \
'validate output from rename/copy detection (#2)' \
'compare_diff_patch current expected'
test_expect_success \
'prepare work tree once again' \
'cat "$TEST_DIRECTORY"/../COPYING >COPYING &&
git update-index --add --remove COPYING COPYING.1'
# tree has COPYING and rezrov. work tree has COPYING and COPYING.1,
# but COPYING is not edited. We say you copy-and-edit COPYING.1; this
# is only possible because -C mode now reports the unmodified file to
# the diff-core. Unchanged rezrov, although being fed to
# git diff-index as well, should not be mentioned.
GIT_DIFF_OPTS=--unified=0 \
git diff-index -C --find-copies-harder -p $tree >current
cat >expected <<\EOF
diff --git a/COPYING b/COPYING.1
copy from COPYING
copy to COPYING.1
--- a/COPYING
+++ b/COPYING.1
@@ -6 +6 @@
- HOWEVER, in order to allow a migration to GPLv3 if that seems like
+ However, in order to allow a migration to GPLv3 if that seems like
EOF
test_expect_success \
'validate output from rename/copy detection (#3)' \
'compare_diff_patch current expected'
test_done