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