t/t4022-diff-rewrite.sh

   1 #!/bin/sh
   2
   3 test_description='rewrite diff'
   4
   5 TEST_PASSES_SANITIZE_LEAK=true
   6 . ./test-lib.sh
   7 . "$TEST_DIRECTORY"/lib-diff-data.sh
   8
   9 test_expect_success setup '
  10
  11         COPYING_test_data >test.data &&
  12         cp test.data test &&
  13         git add test &&
  14         tr \
  15           "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" \
  16           "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM" \
  17           <test.data >test &&
  18         echo "to be deleted" >test2 &&
  19         blob=$(git hash-object test2) &&
  20         blob=$(git rev-parse --short $blob) &&
  21         git add test2
  22
  23 '
  24
  25 test_expect_success 'detect rewrite' '
  26
  27         actual=$(git diff-files -B --summary test) &&
  28         expr "$actual" : " rewrite test ([0-9]*%)$"
  29
  30 '
  31
  32 cat >expect <<EOF
  33 diff --git a/test2 b/test2
  34 deleted file mode 100644
  35 index $blob..0000000
  36 --- a/test2
  37 +++ /dev/null
  38 @@ -1 +0,0 @@
  39 -to be deleted
  40 EOF
  41 test_expect_success 'show deletion diff without -D' '
  42
  43         rm test2 &&
  44         git diff -- test2 >actual &&
  45         test_cmp expect actual
  46 '
  47
  48 cat >expect <<EOF
  49 diff --git a/test2 b/test2
  50 deleted file mode 100644
  51 index $blob..0000000
  52 EOF
  53 test_expect_success 'suppress deletion diff with -D' '
  54
  55         git diff -D -- test2 >actual &&
  56         test_cmp expect actual
  57 '
  58
  59 test_expect_success 'show deletion diff with -B' '
  60
  61         git diff -B -- test >actual &&
  62         grep "Linus Torvalds" actual
  63 '
  64
  65 test_expect_success 'suppress deletion diff with -B -D' '
  66
  67         git diff -B -D -- test >actual &&
  68         grep -v "Linus Torvalds" actual
  69 '
  70
  71 test_expect_success 'prepare a file that ends with an incomplete line' '
  72         test_seq 1 99 >seq &&
  73         printf 100 >>seq &&
  74         git add seq &&
  75         git commit seq -m seq
  76 '
  77
  78 test_expect_success 'rewrite the middle 90% of sequence file and terminate with newline' '
  79         test_seq 1 5 >seq &&
  80         test_seq 9331 9420 >>seq &&
  81         test_seq 96 100 >>seq
  82 '
  83
  84 test_expect_success 'confirm that sequence file is considered a rewrite' '
  85         git diff -B seq >res &&
  86         grep "dissimilarity index" res
  87 '
  88
  89 test_expect_success 'no newline at eof is on its own line without -B' '
  90         git diff seq >res &&
  91         grep "^\\\\ " res &&
  92         ! grep "^..*\\\\ " res
  93 '
  94
  95 test_expect_success 'no newline at eof is on its own line with -B' '
  96         git diff -B seq >res &&
  97         grep "^\\\\ " res &&
  98         ! grep "^..*\\\\ " res
  99 '
 100
 101 test_done
 102