t/t4031-diff-rewrite-binary.sh

   1 #!/bin/sh
   2
   3 test_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.
   9 make_file() {
  10         for i in 1 2 3 4 5 6 7 8 9 10
  11         do
  12                 for j in 1 2 3 4 5 6 7 8 9
  13                 do
  14                         for k in 1 2 3 4 5
  15                         do
  16                                 printf "$1\n"
  17                         done
  18                 done
  19         done >file
  20 }
  21
  22 test_expect_success 'create binary file with changes' '
  23         make_file "\\0" &&
  24         git add file &&
  25         make_file "\\01"
  26 '
  27
  28 test_expect_success 'vanilla diff is binary' '
  29         git diff >diff &&
  30         grep "Binary files a/file and b/file differ" diff
  31 '
  32
  33 test_expect_success 'rewrite diff is binary' '
  34         git diff -B >diff &&
  35         grep "dissimilarity index" diff &&
  36         grep "Binary files a/file and b/file differ" diff
  37 '
  38
  39 test_expect_success 'rewrite diff can show binary patch' '
  40         git diff -B --binary >diff &&
  41         grep "dissimilarity index" diff &&
  42         grep "GIT binary patch" diff
  43 '
  44
  45 test_done