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1#!/bin/sh
2
3test_description='rewrite diff'
4
5. ./test-lib.sh
6. "$TEST_DIRECTORY"/lib-diff-data.sh
7
8test_expect_success setup '
9
10 COPYING_test_data >test.data &&
11 cp test.data test &&
12 git add test &&
13 tr \
14 "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" \
15 "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM" \
16 <test.data >test &&
17 echo "to be deleted" >test2 &&
18 blob=$(git hash-object test2) &&
19 blob=$(git rev-parse --short $blob) &&
20 git add test2
21
22'
23
24test_expect_success 'detect rewrite' '
25
26 actual=$(git diff-files -B --summary test) &&
27 expr "$actual" : " rewrite test ([0-9]*%)$"
28
29'
30
31cat >expect <<EOF
32diff --git a/test2 b/test2
33deleted file mode 100644
34index $blob..0000000
35--- a/test2
36+++ /dev/null
37@@ -1 +0,0 @@
38-to be deleted
39EOF
40test_expect_success 'show deletion diff without -D' '
41
42 rm test2 &&
43 git diff -- test2 >actual &&
44 test_cmp expect actual
45'
46
47cat >expect <<EOF
48diff --git a/test2 b/test2
49deleted file mode 100644
50index $blob..0000000
51EOF
52test_expect_success 'suppress deletion diff with -D' '
53
54 git diff -D -- test2 >actual &&
55 test_cmp expect actual
56'
57
58test_expect_success 'show deletion diff with -B' '
59
60 git diff -B -- test >actual &&
61 grep "Linus Torvalds" actual
62'
63
64test_expect_success 'suppress deletion diff with -B -D' '
65
66 git diff -B -D -- test >actual &&
67 grep -v "Linus Torvalds" actual
68'
69
70test_expect_success 'prepare a file that ends with an incomplete line' '
71 test_seq 1 99 >seq &&
72 printf 100 >>seq &&
73 git add seq &&
74 git commit seq -m seq
75'
76
77test_expect_success 'rewrite the middle 90% of sequence file and terminate with newline' '
78 test_seq 1 5 >seq &&
79 test_seq 9331 9420 >>seq &&
80 test_seq 96 100 >>seq
81'
82
83test_expect_success 'confirm that sequence file is considered a rewrite' '
84 git diff -B seq >res &&
85 grep "dissimilarity index" res
86'
87
88test_expect_success 'no newline at eof is on its own line without -B' '
89 git diff seq >res &&
90 grep "^\\\\ " res &&
91 ! grep "^..*\\\\ " res
92'
93
94test_expect_success 'no newline at eof is on its own line with -B' '
95 git diff -B seq >res &&
96 grep "^\\\\ " res &&
97 ! grep "^..*\\\\ " res
98'
99
100test_done
101