t/t4022-diff-rewrite.sh

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