Andrew's git - gitweb.git/blob - t/t4024-diff-optimize-common.sh

   1#!/bin/sh
   2
   3test_description='common tail optimization'
   4
   5. ./test-lib.sh
   6
   7z=zzzzzzzz ;# 8
   8z="$z$z$z$z$z$z$z$z" ;# 64
   9z="$z$z$z$z$z$z$z$z" ;# 512
  10z="$z$z$z$z" ;# 2048
  11z2047=$(expr "$z" : '.\(.*\)') ; #2047
  12
  13x=zzzzzzzzzz                    ;# 10
  14y="$x$x$x$x$x$x$x$x$x$x"        ;# 100
  15z="$y$y$y$y$y$y$y$y$y$y"        ;# 1000
  16z1000=$z
  17z100=$y
  18z10=$x
  19
  20zs() {
  21        count="$1"
  22        while test "$count" -ge 1000
  23        do
  24                count=$(($count - 1000))
  25                printf "%s" $z1000
  26        done
  27        while test "$count" -ge 100
  28        do
  29                count=$(($count - 100))
  30                printf "%s" $z100
  31        done
  32        while test "$count" -ge 10
  33        do
  34                count=$(($count - 10))
  35                printf "%s" $z10
  36        done
  37        while test "$count" -ge 1
  38        do
  39                count=$(($count - 1))
  40                printf "z"
  41        done
  42}
  43
  44zc () {
  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" \
  89        ;
  90}
  91
  92expect_pattern () {
  93        cnt="$1"
  94        cat <<EOF
  95diff --git a/file-a$cnt b/file-a$cnt
  96--- a/file-a$cnt
  97+++ b/file-a$cnt
  98@@ -1 +1 @@
  99-Z${cnt}a
 100+Z${cnt}A
 101diff --git a/file-b$cnt b/file-b$cnt
 102--- a/file-b$cnt
 103+++ b/file-b$cnt
 104@@ -1 +1 @@
 105-b
 106+B
 107diff --git a/file-c$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$cnt
 114\ No newline at end of file
 115diff --git a/file-d$cnt b/file-d$cnt
 116--- a/file-d$cnt
 117+++ b/file-d$cnt
 118@@ -1 +1 @@
 119-d
 120+D
 121EOF
 122}
 123
 124sample='1023 1024 1025 2047 4095'
 125
 126test_expect_success setup '
 127
 128        for n in $sample
 129        do
 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 &&
 134
 135                git add file-a$n file-b$n file-c$n file-d$n &&
 136
 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 &&
 141
 142                expect_pattern $n || return 1
 143
 144        done >expect
 145'
 146
 147test_expect_success 'diff -U0' '
 148
 149        for n in $sample
 150        do
 151                git diff -U0 file-?$n
 152        done | zc >actual &&
 153        test_cmp expect actual
 154
 155'
 156
 157test_done