Fix t4031
[git/git.git] / t / t4031-diff-rewrite-binary.sh
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1#!/bin/sh
2
3test_description='rewrite diff on binary file'
4
5. ./test-lib.sh
6
7# We must be large enough to meet the MINIMUM_BREAK_SIZE
8# requirement.
9make_file() {
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10 # common first line to help identify rewrite versus regular diff
11 printf "=\n" >file
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12 for i in 1 2 3 4 5 6 7 8 9 10
13 do
14 for j in 1 2 3 4 5 6 7 8 9
15 do
16 for k in 1 2 3 4 5
17 do
18 printf "$1\n"
19 done
20 done
3aa1f7ca 21 done >>file
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22}
23
24test_expect_success 'create binary file with changes' '
25 make_file "\\0" &&
26 git add file &&
27 make_file "\\01"
28'
29
30test_expect_success 'vanilla diff is binary' '
31 git diff >diff &&
32 grep "Binary files a/file and b/file differ" diff
33'
34
35test_expect_success 'rewrite diff is binary' '
36 git diff -B >diff &&
37 grep "dissimilarity index" diff &&
38 grep "Binary files a/file and b/file differ" diff
39'
40
41test_expect_success 'rewrite diff can show binary patch' '
42 git diff -B --binary >diff &&
43 grep "dissimilarity index" diff &&
44 grep "GIT binary patch" diff
45'
46
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47{
48 echo "#!$SHELL_PATH"
de749a97 49 cat <<'EOF'
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50perl -e '$/ = undef; $_ = <>; s/./ord($&)/ge; print $_' < "$1"
51EOF
52} >dump
53chmod +x dump
54
55test_expect_success 'setup textconv' '
56 echo file diff=foo >.gitattributes &&
57 git config diff.foo.textconv "$PWD"/dump
58'
59
60test_expect_success 'rewrite diff respects textconv' '
61 git diff -B >diff &&
62 grep "dissimilarity index" diff &&
63 grep "^-61" diff &&
64 grep "^-0" diff
65'
66
0c01857d 67test_done