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: /' "$@" >helper.out
   9 cat helper.out
  10 EOF
  11 chmod +x helper
  12
  13 test_expect_success 'setup' '
  14         echo foo content 1 >foo.bin &&
  15         echo bar content 1 >bar.bin &&
  16         git add . &&
  17         git commit -m one &&
  18         foo1=$(git rev-parse --short HEAD:foo.bin) &&
  19         bar1=$(git rev-parse --short HEAD:bar.bin) &&
  20         echo foo content 2 >foo.bin &&
  21         echo bar content 2 >bar.bin &&
  22         git commit -a -m two &&
  23         foo2=$(git rev-parse --short HEAD:foo.bin) &&
  24         bar2=$(git rev-parse --short HEAD:bar.bin) &&
  25         echo "*.bin diff=magic" >.gitattributes &&
  26         git config diff.magic.textconv ./helper &&
  27         git config diff.magic.cachetextconv true
  28 '
  29
  30 cat >expect <<EOF
  31 diff --git a/bar.bin b/bar.bin
  32 index $bar1..$bar2 100644
  33 --- a/bar.bin
  34 +++ b/bar.bin
  35 @@ -1 +1 @@
  36 -converted: bar content 1
  37 +converted: bar content 2
  38 diff --git a/foo.bin b/foo.bin
  39 index $foo1..$foo2 100644
  40 --- a/foo.bin
  41 +++ b/foo.bin
  42 @@ -1 +1 @@
  43 -converted: foo content 1
  44 +converted: foo content 2
  45 EOF
  46
  47 test_expect_success 'first textconv works' '
  48         git diff HEAD^ HEAD >actual &&
  49         test_cmp expect actual
  50 '
  51
  52 test_expect_success 'cached textconv produces same output' '
  53         git diff HEAD^ HEAD >actual &&
  54         test_cmp expect actual
  55 '
  56
  57 test_expect_success 'cached textconv does not run helper' '
  58         rm -f helper.out &&
  59         git diff HEAD^ HEAD >actual &&
  60         test_cmp expect actual &&
  61         ! test -r helper.out
  62 '
  63
  64 cat >expect <<EOF
  65 diff --git a/bar.bin b/bar.bin
  66 index $bar1..$bar2 100644
  67 --- a/bar.bin
  68 +++ b/bar.bin
  69 @@ -1,2 +1,2 @@
  70  converted: other
  71 -converted: bar content 1
  72 +converted: bar content 2
  73 diff --git a/foo.bin b/foo.bin
  74 index $foo1..$foo2 100644
  75 --- a/foo.bin
  76 +++ b/foo.bin
  77 @@ -1,2 +1,2 @@
  78  converted: other
  79 -converted: foo content 1
  80 +converted: foo content 2
  81 EOF
  82 test_expect_success 'changing textconv invalidates cache' '
  83         echo other >other &&
  84         git config diff.magic.textconv "./helper other" &&
  85         git diff HEAD^ HEAD >actual &&
  86         test_cmp expect actual
  87 '
  88
  89 cat >expect <<EOF
  90 diff --git a/bar.bin b/bar.bin
  91 index $bar1..$bar2 100644
  92 --- a/bar.bin
  93 +++ b/bar.bin
  94 @@ -1,2 +1,2 @@
  95  converted: other
  96 -converted: bar content 1
  97 +converted: bar content 2
  98 diff --git a/foo.bin b/foo.bin
  99 index $foo1..$foo2 100644
 100 --- a/foo.bin
 101 +++ b/foo.bin
 102 @@ -1 +1 @@
 103 -converted: foo content 1
 104 +converted: foo content 2
 105 EOF
 106 test_expect_success 'switching diff driver produces correct results' '
 107         git config diff.moremagic.textconv ./helper &&
 108         echo foo.bin diff=moremagic >>.gitattributes &&
 109         git diff HEAD^ HEAD >actual &&
 110         test_cmp expect actual
 111 '
 112
 113 # The point here is to test that we can log the notes cache and still use it to
 114 # produce a diff later (older versions of git would segfault on this). It's
 115 # much more likely to come up in the real world with "log --all -p", but using
 116 # --no-walk lets us reliably reproduce the order of traversal.
 117 test_expect_success 'log notes cache and still use cache for -p' '
 118         git log --no-walk -p refs/notes/textconv/magic HEAD
 119 '
 120
 121 test_done