t/t4051-diff-function-context.sh

   1 #!/bin/sh
   2
   3 test_description='diff function context'
   4
   5 . ./test-lib.sh
   6 . "$TEST_DIRECTORY"/diff-lib.sh
   7
   8
   9 cat <<\EOF >hello.c
  10 #include <stdio.h>
  11
  12 static int a(void)
  13 {
  14         /*
  15          * Dummy.
  16          */
  17 }
  18
  19 static int hello_world(void)
  20 {
  21         /* Classic. */
  22         printf("Hello world.\n");
  23
  24         /* Success! */
  25         return 0;
  26 }
  27 static int b(void)
  28 {
  29         /*
  30          * Dummy, too.
  31          */
  32 }
  33
  34 int main(int argc, char **argv)
  35 {
  36         a();
  37         b();
  38         return hello_world();
  39 }
  40 EOF
  41
  42 test_expect_success 'setup' '
  43         git add hello.c &&
  44         test_tick &&
  45         git commit -m initial &&
  46
  47         grep -v Classic <hello.c >hello.c.new &&
  48         mv hello.c.new hello.c
  49 '
  50
  51 cat <<\EOF >expected
  52 diff --git a/hello.c b/hello.c
  53 --- a/hello.c
  54 +++ b/hello.c
  55 @@ -10,8 +10,7 @@ static int a(void)
  56  static int hello_world(void)
  57  {
  58 -       /* Classic. */
  59         printf("Hello world.\n");
  60
  61         /* Success! */
  62         return 0;
  63  }
  64 EOF
  65
  66 test_expect_success 'diff -U0 -W' '
  67         git diff -U0 -W >actual &&
  68         compare_diff_patch actual expected
  69 '
  70
  71 cat <<\EOF >expected
  72 diff --git a/hello.c b/hello.c
  73 --- a/hello.c
  74 +++ b/hello.c
  75 @@ -9,9 +9,8 @@ static int a(void)
  76
  77  static int hello_world(void)
  78  {
  79 -       /* Classic. */
  80         printf("Hello world.\n");
  81
  82         /* Success! */
  83         return 0;
  84  }
  85 EOF
  86
  87 test_expect_success 'diff -W' '
  88         git diff -W >actual &&
  89         compare_diff_patch actual expected
  90 '
  91
  92 test_done