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         git add test2
  17
  18 '
  19
  20 test_expect_success 'detect rewrite' '
  21
  22         actual=$(git diff-files -B --summary test) &&
  23         expr "$actual" : " rewrite test ([0-9]*%)$" || {
  24                 echo "Eh? <<$actual>>"
  25                 false
  26         }
  27
  28 '
  29
  30 cat >expect <<EOF
  31 diff --git a/test2 b/test2
  32 deleted file mode 100644
  33 index 4202011..0000000
  34 --- a/test2
  35 +++ /dev/null
  36 @@ -1 +0,0 @@
  37 -to be deleted
  38 EOF
  39 test_expect_success 'show deletion diff without -D' '
  40
  41         rm test2 &&
  42         git diff -- test2 >actual &&
  43         test_cmp expect actual
  44 '
  45
  46 cat >expect <<EOF
  47 diff --git a/test2 b/test2
  48 deleted file mode 100644
  49 index 4202011..0000000
  50 EOF
  51 test_expect_success 'suppress deletion diff with -D' '
  52
  53         git diff -D -- test2 >actual &&
  54         test_cmp expect actual
  55 '
  56
  57 test_expect_success 'show deletion diff with -B' '
  58
  59         git diff -B -- test >actual &&
  60         grep "Linus Torvalds" actual
  61 '
  62
  63 test_expect_success 'suppress deletion diff with -B -D' '
  64
  65         git diff -B -D -- test >actual &&
  66         grep -v "Linus Torvalds" actual
  67 '
  68
  69 test_expect_success 'prepare a file that ends with an incomplete line' '
  70         test_seq 1 99 >seq &&
  71         printf 100 >>seq &&
  72         git add seq &&
  73         git commit seq -m seq
  74 '
  75
  76 test_expect_success 'rewrite the middle 90% of sequence file and terminate with newline' '
  77         test_seq 1 5 >seq &&
  78         test_seq 9331 9420 >>seq &&
  79         test_seq 96 100 >>seq
  80 '
  81
  82 test_expect_success 'confirm that sequence file is considered a rewrite' '
  83         git diff -B seq >res &&
  84         grep "dissimilarity index" res
  85 '
  86
  87 test_expect_success 'no newline at eof is on its own line without -B' '
  88         git diff seq >res &&
  89         grep "^\\\\ " res &&
  90         ! grep "^..*\\\\ " res
  91 '
  92
  93 test_expect_success 'no newline at eof is on its own line with -B' '
  94         git diff -B seq >res &&
  95         grep "^\\\\ " res &&
  96         ! grep "^..*\\\\ " res
  97 '
  98
  99 test_done
 100