t/t4055-diff-context.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2012 Mozilla Foundation
   4 #
   5
   6 test_description='diff.context configuration'
   7
   8 TEST_PASSES_SANITIZE_LEAK=true
   9 . ./test-lib.sh
  10
  11 test_expect_success 'setup' '
  12         cat >template <<-\EOF &&
  13         firstline
  14         b
  15         c
  16         d
  17         e
  18         f
  19         preline
  20         TARGET
  21         postline
  22         i
  23         j
  24         k
  25         l
  26         m
  27         n
  28         EOF
  29         sed "/TARGET/d" >x <template &&
  30         git update-index --add x &&
  31         git commit -m initial &&
  32
  33         sed "s/TARGET/ADDED/" >x <template &&
  34         git update-index --add x &&
  35         git commit -m next &&
  36
  37         sed "s/TARGET/MODIFIED/" >x <template
  38 '
  39
  40 test_expect_success 'the default number of context lines is 3' '
  41         git diff >output &&
  42         ! grep "^ d" output &&
  43         grep "^ e" output &&
  44         grep "^ j" output &&
  45         ! grep "^ k" output
  46 '
  47
  48 test_expect_success 'diff.context honored by "log"' '
  49         git log -1 -p >output &&
  50         ! grep firstline output &&
  51         git config diff.context 8 &&
  52         git log -1 -p >output &&
  53         grep "^ firstline" output
  54 '
  55
  56 test_expect_success 'The -U option overrides diff.context' '
  57         git config diff.context 8 &&
  58         git log -U4 -1 >output &&
  59         ! grep "^ firstline" output
  60 '
  61
  62 test_expect_success 'diff.context honored by "diff"' '
  63         git config diff.context 8 &&
  64         git diff >output &&
  65         grep "^ firstline" output
  66 '
  67
  68 test_expect_success 'plumbing not affected' '
  69         git config diff.context 8 &&
  70         git diff-files -p >output &&
  71         ! grep "^ firstline" output
  72 '
  73
  74 test_expect_success 'non-integer config parsing' '
  75         git config diff.context no &&
  76         test_must_fail git diff 2>output &&
  77         test_grep "bad numeric config value" output
  78 '
  79
  80 test_expect_success 'negative integer config parsing' '
  81         git config diff.context -1 &&
  82         test_must_fail git diff 2>output &&
  83         test_grep "bad config variable" output
  84 '
  85
  86 test_expect_success '-U0 is valid, so is diff.context=0' '
  87         git config diff.context 0 &&
  88         git diff >output &&
  89         grep "^-ADDED" output &&
  90         grep "^+MODIFIED" output
  91 '
  92
  93 test_done