t/t4042-diff-textconv-caching.sh

   1 #!/bin/sh
   2
   3 test_description='test textconv caching'
   4 . ./test-lib.sh
   5
   6 cat >helper <<'EOF'
   7 #!/bin/sh
   8 sed 's/^/converted: /' "$@" >helper.out
   9 cat helper.out
  10 EOF
  11 chmod +x helper
  12
  13 test_expect_success 'setup' '
  14         echo foo content 1 >foo.bin &&
  15         echo bar content 1 >bar.bin &&
  16         git add . &&
  17         git commit -m one &&
  18         echo foo content 2 >foo.bin &&
  19         echo bar content 2 >bar.bin &&
  20         git commit -a -m two &&
  21         echo "*.bin diff=magic" >.gitattributes &&
  22         git config diff.magic.textconv ./helper &&
  23         git config diff.magic.cachetextconv true
  24 '
  25
  26 cat >expect <<EOF
  27 diff --git a/bar.bin b/bar.bin
  28 index fcf9166..28283d5 100644
  29 --- a/bar.bin
  30 +++ b/bar.bin
  31 @@ -1 +1 @@
  32 -converted: bar content 1
  33 +converted: bar content 2
  34 diff --git a/foo.bin b/foo.bin
  35 index d5b9fe3..1345db2 100644
  36 --- a/foo.bin
  37 +++ b/foo.bin
  38 @@ -1 +1 @@
  39 -converted: foo content 1
  40 +converted: foo content 2
  41 EOF
  42
  43 test_expect_success 'first textconv works' '
  44         git diff HEAD^ HEAD >actual &&
  45         test_cmp expect actual
  46 '
  47
  48 test_expect_success 'cached textconv produces same output' '
  49         git diff HEAD^ HEAD >actual &&
  50         test_cmp expect actual
  51 '
  52
  53 test_expect_success 'cached textconv does not run helper' '
  54         rm -f helper.out &&
  55         git diff HEAD^ HEAD >actual &&
  56         test_cmp expect actual &&
  57         ! test -r helper.out
  58 '
  59
  60 cat >expect <<EOF
  61 diff --git a/bar.bin b/bar.bin
  62 index fcf9166..28283d5 100644
  63 --- a/bar.bin
  64 +++ b/bar.bin
  65 @@ -1,2 +1,2 @@
  66  converted: other
  67 -converted: bar content 1
  68 +converted: bar content 2
  69 diff --git a/foo.bin b/foo.bin
  70 index d5b9fe3..1345db2 100644
  71 --- a/foo.bin
  72 +++ b/foo.bin
  73 @@ -1,2 +1,2 @@
  74  converted: other
  75 -converted: foo content 1
  76 +converted: foo content 2
  77 EOF
  78 test_expect_success 'changing textconv invalidates cache' '
  79         echo other >other &&
  80         git config diff.magic.textconv "./helper other" &&
  81         git diff HEAD^ HEAD >actual &&
  82         test_cmp expect actual
  83 '
  84
  85 cat >expect <<EOF
  86 diff --git a/bar.bin b/bar.bin
  87 index fcf9166..28283d5 100644
  88 --- a/bar.bin
  89 +++ b/bar.bin
  90 @@ -1,2 +1,2 @@
  91  converted: other
  92 -converted: bar content 1
  93 +converted: bar content 2
  94 diff --git a/foo.bin b/foo.bin
  95 index d5b9fe3..1345db2 100644
  96 --- a/foo.bin
  97 +++ b/foo.bin
  98 @@ -1 +1 @@
  99 -converted: foo content 1
 100 +converted: foo content 2
 101 EOF
 102 test_expect_success 'switching diff driver produces correct results' '
 103         git config diff.moremagic.textconv ./helper &&
 104         echo foo.bin diff=moremagic >>.gitattributes &&
 105         git diff HEAD^ HEAD >actual &&
 106         test_cmp expect actual
 107 '
 108
 109 # The point here is to test that we can log the notes cache and still use it to
 110 # produce a diff later (older versions of git would segfault on this). It's
 111 # much more likely to come up in the real world with "log --all -p", but using
 112 # --no-walk lets us reliably reproduce the order of traversal.
 113 test_expect_success 'log notes cache and still use cache for -p' '
 114         git log --no-walk -p refs/notes/textconv/magic HEAD
 115 '
 116
 117 test_done