diff: add option to show whole functions as context

[git.git] / t / t4051-diff-function-context.sh

diff --git a/t/t4051-diff-function-context.sh b/t/t4051-diff-function-context.sh
new file mode 100644 (file)
index 0000000..001d678
--- /dev/null
+++ b/t/t4051-diff-function-context.sh
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+test_description='diff function context'
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh
+
+
+cat <<\EOF >hello.c
+#include <stdio.h>
+
+static int a(void)
+{
+       /*
+        * Dummy.
+        */
+}
+
+static int hello_world(void)
+{
+       /* Classic. */
+       printf("Hello world.\n");
+
+       /* Success! */
+       return 0;
+}
+static int b(void)
+{
+       /*
+        * Dummy, too.
+        */
+}
+
+int main(int argc, char **argv)
+{
+       a();
+       b();
+       return hello_world();
+}
+EOF
+
+test_expect_success 'setup' '
+       git add hello.c &&
+       test_tick &&
+       git commit -m initial &&
+
+       grep -v Classic <hello.c >hello.c.new &&
+       mv hello.c.new hello.c
+'
+
+cat <<\EOF >expected
+diff --git a/hello.c b/hello.c
+--- a/hello.c
++++ b/hello.c
+@@ -10,8 +10,7 @@ static int a(void)
+ static int hello_world(void)
+ {
+-      /* Classic. */
+       printf("Hello world.\n");
+ 
+       /* Success! */
+       return 0;
+ }
+EOF
+
+test_expect_success 'diff -U0 -W' '
+       git diff -U0 -W >actual &&
+       compare_diff_patch actual expected
+'
+
+cat <<\EOF >expected
+diff --git a/hello.c b/hello.c
+--- a/hello.c
++++ b/hello.c
+@@ -9,9 +9,8 @@ static int a(void)
+ 
+ static int hello_world(void)
+ {
+-      /* Classic. */
+       printf("Hello world.\n");
+ 
+       /* Success! */
+       return 0;
+ }
+EOF
+
+test_expect_success 'diff -W' '
+       git diff -W >actual &&
+       compare_diff_patch actual expected
+'
+
+test_done