t/t4022-diff-rewrite.sh

   1 #!/bin/sh
   2
   3 test_description='rewrite diff'
   4
   5 . ./test-lib.sh
   6 . "$TEST_DIRECTORY"/lib-diff-data.sh
   7
   8 test_expect_success setup '
   9
  10         COPYING_test_data >test.data &&
  11         cp test.data test &&
  12         git add test &&
  13         tr \
  14           "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" \
  15           "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM" \
  16           <test.data >test &&
  17         echo "to be deleted" >test2 &&
  18         blob=$(git hash-object test2) &&
  19         blob=$(git rev-parse --short $blob) &&
  20         git add test2
  21
  22 '
  23
  24 test_expect_success 'detect rewrite' '
  25
  26         actual=$(git diff-files -B --summary test) &&
  27         expr "$actual" : " rewrite test ([0-9]*%)$"
  28
  29 '
  30
  31 cat >expect <<EOF
  32 diff --git a/test2 b/test2
  33 deleted file mode 100644
  34 index $blob..0000000
  35 --- a/test2
  36 +++ /dev/null
  37 @@ -1 +0,0 @@
  38 -to be deleted
  39 EOF
  40 test_expect_success 'show deletion diff without -D' '
  41
  42         rm test2 &&
  43         git diff -- test2 >actual &&
  44         test_cmp expect actual
  45 '
  46
  47 cat >expect <<EOF
  48 diff --git a/test2 b/test2
  49 deleted file mode 100644
  50 index $blob..0000000
  51 EOF
  52 test_expect_success 'suppress deletion diff with -D' '
  53
  54         git diff -D -- test2 >actual &&
  55         test_cmp expect actual
  56 '
  57
  58 test_expect_success 'show deletion diff with -B' '
  59
  60         git diff -B -- test >actual &&
  61         grep "Linus Torvalds" actual
  62 '
  63
  64 test_expect_success 'suppress deletion diff with -B -D' '
  65
  66         git diff -B -D -- test >actual &&
  67         grep -v "Linus Torvalds" actual
  68 '
  69
  70 test_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
  77 test_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
  83 test_expect_success 'confirm that sequence file is considered a rewrite' '
  84         git diff -B seq >res &&
  85         grep "dissimilarity index" res
  86 '
  87
  88 test_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
  94 test_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
 100 test_done
 101