t0300: work around bug in dash 0.5.6
[git.git] / t / t4024-diff-optimize-common.sh
blobc4d733f5db6a4d390762505b770954cdbf6cc82f
1 #!/bin/sh
3 test_description='common tail optimization'
5 . ./test-lib.sh
7 z=zzzzzzzz ;# 8
8 z="$z$z$z$z$z$z$z$z" ;# 64
9 z="$z$z$z$z$z$z$z$z" ;# 512
10 z="$z$z$z$z" ;# 2048
11 z2047=$(expr "$z" : '.\(.*\)') ; #2047
13 x=zzzzzzzzzz ;# 10
14 y="$x$x$x$x$x$x$x$x$x$x" ;# 100
15 z="$y$y$y$y$y$y$y$y$y$y" ;# 1000
16 z1000=$z
17 z100=$y
18 z10=$x
20 zs() {
21 count="$1"
22 while test "$count" -ge 1000
24 count=$(($count - 1000))
25 printf "%s" $z1000
26 done
27 while test "$count" -ge 100
29 count=$(($count - 100))
30 printf "%s" $z100
31 done
32 while test "$count" -ge 10
34 count=$(($count - 10))
35 printf "%s" $z10
36 done
37 while test "$count" -ge 1
39 count=$(($count - 1))
40 printf "z"
41 done
44 zc () {
45 sed -e "/^index/d" \
46 -e "s/$z1000/Q/g" \
47 -e "s/QQQQQQQQQ/Z9000/g" \
48 -e "s/QQQQQQQQ/Z8000/g" \
49 -e "s/QQQQQQQ/Z7000/g" \
50 -e "s/QQQQQQ/Z6000/g" \
51 -e "s/QQQQQ/Z5000/g" \
52 -e "s/QQQQ/Z4000/g" \
53 -e "s/QQQ/Z3000/g" \
54 -e "s/QQ/Z2000/g" \
55 -e "s/Q/Z1000/g" \
56 -e "s/$z100/Q/g" \
57 -e "s/QQQQQQQQQ/Z900/g" \
58 -e "s/QQQQQQQQ/Z800/g" \
59 -e "s/QQQQQQQ/Z700/g" \
60 -e "s/QQQQQQ/Z600/g" \
61 -e "s/QQQQQ/Z500/g" \
62 -e "s/QQQQ/Z400/g" \
63 -e "s/QQQ/Z300/g" \
64 -e "s/QQ/Z200/g" \
65 -e "s/Q/Z100/g" \
66 -e "s/000Z//g" \
67 -e "s/$z10/Q/g" \
68 -e "s/QQQQQQQQQ/Z90/g" \
69 -e "s/QQQQQQQQ/Z80/g" \
70 -e "s/QQQQQQQ/Z70/g" \
71 -e "s/QQQQQQ/Z60/g" \
72 -e "s/QQQQQ/Z50/g" \
73 -e "s/QQQQ/Z40/g" \
74 -e "s/QQQ/Z30/g" \
75 -e "s/QQ/Z20/g" \
76 -e "s/Q/Z10/g" \
77 -e "s/00Z//g" \
78 -e "s/z/Q/g" \
79 -e "s/QQQQQQQQQ/Z9/g" \
80 -e "s/QQQQQQQQ/Z8/g" \
81 -e "s/QQQQQQQ/Z7/g" \
82 -e "s/QQQQQQ/Z6/g" \
83 -e "s/QQQQQ/Z5/g" \
84 -e "s/QQQQ/Z4/g" \
85 -e "s/QQQ/Z3/g" \
86 -e "s/QQ/Z2/g" \
87 -e "s/Q/Z1/g" \
88 -e "s/0Z//g" \
92 expect_pattern () {
93 cnt="$1"
94 cat <<EOF
95 diff --git a/file-a$cnt b/file-a$cnt
96 --- a/file-a$cnt
97 +++ b/file-a$cnt
98 @@ -1 +1 @@
99 -Z${cnt}a
100 +Z${cnt}A
101 diff --git a/file-b$cnt b/file-b$cnt
102 --- a/file-b$cnt
103 +++ b/file-b$cnt
104 @@ -1 +1 @@
107 diff --git a/file-c$cnt b/file-c$cnt
108 --- a/file-c$cnt
109 +++ b/file-c$cnt
110 @@ -1 +1 @@
111 -cZ$cnt
112 \ No newline at end of file
113 +CZ$cnt
114 \ No newline at end of file
115 diff --git a/file-d$cnt b/file-d$cnt
116 --- a/file-d$cnt
117 +++ b/file-d$cnt
118 @@ -1 +1 @@
124 sample='1023 1024 1025 2047 4095'
126 test_expect_success setup '
128 for n in $sample
130 ( zs $n ; echo a ) >file-a$n &&
131 ( echo b; zs $n; echo ) >file-b$n &&
132 ( printf c; zs $n ) >file-c$n &&
133 ( echo d; zs $n ) >file-d$n &&
135 git add file-a$n file-b$n file-c$n file-d$n &&
137 ( zs $n ; echo A ) >file-a$n &&
138 ( echo B; zs $n; echo ) >file-b$n &&
139 ( printf C; zs $n ) >file-c$n &&
140 ( echo D; zs $n ) >file-d$n &&
142 expect_pattern $n || break
144 done >expect
147 test_expect_success 'diff -U0' '
149 for n in $sample
151 git diff -U0 file-?$n
152 done | zc >actual &&
153 test_cmp expect actual
157 test_done