diff options
Diffstat (limited to 't/t4008-diff-break-rewrite.sh')
| -rwxr-xr-x | t/t4008-diff-break-rewrite.sh | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/t/t4008-diff-break-rewrite.sh b/t/t4008-diff-break-rewrite.sh new file mode 100755 index 0000000000..e19ca65885 --- /dev/null +++ b/t/t4008-diff-break-rewrite.sh @@ -0,0 +1,188 @@ +#!/bin/sh +# +# Copyright (c) 2005 Junio C Hamano +# + +test_description='Break and then rename + +We have two very different files, file0 and file1, registered in a tree. + +We update file1 so drastically that it is more similar to file0, and +then remove file0. With -B, changes to file1 should be broken into +separate delete and create, resulting in removal of file0, removal of +original file1 and creation of completely rewritten file1. + +Further, with -B and -M together, these three modifications should +turn into rename-edit of file0 into file1. + +Starting from the same two files in the tree, we swap file0 and file1. +With -B, this should be detected as two complete rewrites, resulting in +four changes in total. + +Further, with -B and -M together, these should turn into two renames. +' +. ./test-lib.sh +. "$TEST_DIRECTORY"/diff-lib.sh ;# test-lib chdir's into trash + +test_expect_success \ + setup \ + 'cat "$TEST_DIRECTORY"/../README >file0 && + cat "$TEST_DIRECTORY"/../COPYING >file1 && + git update-index --add file0 file1 && + tree=$(git write-tree) && + echo "$tree"' + +test_expect_success \ + 'change file1 with copy-edit of file0 and remove file0' \ + 'sed -e "s/git/GIT/" file0 >file1 && + rm -f file0 && + git update-index --remove file0 file1' + +test_expect_success \ + 'run diff with -B' \ + 'git diff-index -B --cached "$tree" >current' + +cat >expected <<\EOF +:100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D file0 +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 11e331465a89c394dc25c780de230043750c1ec8 M100 file1 +EOF + +test_expect_success \ + 'validate result of -B (#1)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'run diff with -B and -M' \ + 'git diff-index -B -M "$tree" >current' + +cat >expected <<\EOF +:100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 08bb2fb671deff4c03a4d4a0a1315dff98d5732c R100 file0 file1 +EOF + +test_expect_success \ + 'validate result of -B -M (#2)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'swap file0 and file1' \ + 'rm -f file0 file1 && + git read-tree -m $tree && + git checkout-index -f -u -a && + mv file0 tmp && + mv file1 file0 && + mv tmp file1 && + git update-index file0 file1' + +test_expect_success \ + 'run diff with -B' \ + 'git diff-index -B "$tree" >current' + +cat >expected <<\EOF +:100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 6ff87c4664981e4397625791c8ea3bbb5f2279a3 M100 file0 +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100 file1 +EOF + +test_expect_success \ + 'validate result of -B (#3)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'run diff with -B and -M' \ + 'git diff-index -B -M "$tree" >current' + +cat >expected <<\EOF +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 6ff87c4664981e4397625791c8ea3bbb5f2279a3 R100 file1 file0 +:100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 R100 file0 file1 +EOF + +test_expect_success \ + 'validate result of -B -M (#4)' \ + 'compare_diff_raw expected current' + +test_expect_success SYMLINKS \ + 'make file0 into something completely different' \ + 'rm -f file0 && + ln -s frotz file0 && + git update-index file0 file1' + +test_expect_success \ + 'run diff with -B' \ + 'git diff-index -B "$tree" >current' + +cat >expected <<\EOF +:100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T file0 +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100 file1 +EOF + +test_expect_success SYMLINKS \ + 'validate result of -B (#5)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'run diff with -B -M' \ + 'git diff-index -B -M "$tree" >current' + +# file0 changed from regular to symlink. file1 is very close to the preimage of file0. +# because we break file0, file1 can become a rename of it. +cat >expected <<\EOF +:100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T file0 +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 R file0 file1 +EOF + +test_expect_success SYMLINKS \ + 'validate result of -B -M (#6)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'run diff with -M' \ + 'git diff-index -M "$tree" >current' + +# This should not mistake file0 as the copy source of new file1 +# due to type differences. +cat >expected <<\EOF +:100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T file0 +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M file1 +EOF + +test_expect_success SYMLINKS \ + 'validate result of -M (#7)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'file1 edited to look like file0 and file0 rename-edited to file2' \ + 'rm -f file0 file1 && + git read-tree -m $tree && + git checkout-index -f -u -a && + sed -e "s/git/GIT/" file0 >file1 && + sed -e "s/git/GET/" file0 >file2 && + rm -f file0 + git update-index --add --remove file0 file1 file2' + +test_expect_success \ + 'run diff with -B' \ + 'git diff-index -B "$tree" >current' + +cat >expected <<\EOF +:100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D file0 +:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 08bb2fb671deff4c03a4d4a0a1315dff98d5732c M100 file1 +:000000 100644 0000000000000000000000000000000000000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 A file2 +EOF + +test_expect_success \ + 'validate result of -B (#8)' \ + 'compare_diff_raw expected current' + +test_expect_success \ + 'run diff with -B -M' \ + 'git diff-index -B -M "$tree" >current' + +cat >expected <<\EOF +:100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 08bb2fb671deff4c03a4d4a0a1315dff98d5732c C095 file0 file1 +:100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 59f832e5c8b3f7e486be15ad0cd3e95ba9af8998 R095 file0 file2 +EOF + +test_expect_success \ + 'validate result of -B -M (#9)' \ + 'compare_diff_raw expected current' + +test_done |