t7810: add test for grep -W and trailing empty context lines

Add a test demonstrating that git grep -W prints empty lines following
the function context we're actually interested in.  The modified test
file makes it necessary to adjust three unrelated test cases.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index b540944408a6feb35f28ff7e18601db7a29f8635..c42b82ae52761358b95f3d78ad0091877d0d83bc 100755 (executable)
--- a/t/t7810-grep.sh
+++ b/t/t7810-grep.sh
@@ -9,7 +9,9 @@ test_description='git grep various.
 . ./test-lib.sh
 
 cat >hello.c <<EOF
+#include <assert.h>
 #include <stdio.h>
+
 int main(int argc, const char **argv)
 {
        printf("Hello world.\n");
@@ -715,6 +717,7 @@ test_expect_success 'grep -p' '
 
 cat >expected <<EOF
 hello.c-#include <stdio.h>
+hello.c-
 hello.c=int main(int argc, const char **argv)
 hello.c-{
 hello.c-       printf("Hello world.\n");
@@ -740,6 +743,16 @@ test_expect_success 'grep -W' '
        test_cmp expected actual
 '
 
+cat >expected <<EOF
+hello.c-#include <assert.h>
+hello.c:#include <stdio.h>
+EOF
+
+test_expect_failure 'grep -W shows no trailing empty lines' '
+       git grep -W stdio >actual &&
+       test_cmp expected actual
+'
+
 cat >expected <<EOF
 hello.c=       printf("Hello world.\n");
 hello.c:       return 0;
@@ -1205,8 +1218,8 @@ test_expect_success 'grep --heading' '
 
 cat >expected <<EOF
 <BOLD;GREEN>hello.c<RESET>
-2:int main(int argc, const <BLACK;BYELLOW>char<RESET> **argv)
-6:     /* <BLACK;BYELLOW>char<RESET> ?? */
+4:int main(int argc, const <BLACK;BYELLOW>char<RESET> **argv)
+8:     /* <BLACK;BYELLOW>char<RESET> ?? */
 
 <BOLD;GREEN>hello_world<RESET>
 3:Hel<BLACK;BYELLOW>lo_w<RESET>orld
@@ -1313,7 +1326,7 @@ test_expect_success 'grep --color -e A --and --not -e B with context' '
 '
 
 cat >expected <<EOF
-hello.c-#include <stdio.h>
+hello.c-
 hello.c=int main(int argc, const char **argv)
 hello.c-{
 hello.c:       pr<RED>int<RESET>f("<RED>Hello<RESET> world.\n");