[PATCH v2 7/8] t7810: add test for grep -W and trailing empty context lines

[René Scharfe <l.s.r@xxxxxx>]

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@xxxxxx>
---
 t/t7810-grep.sh | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index 1e72971..26912dc 100755
--- 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");
@@ -741,6 +744,16 @@ test_expect_success 'grep -W' '
 '
 
 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;
 hello.c-	/* char ?? */
@@ -1232,8 +1245,8 @@ 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
@@ -1340,7 +1353,7 @@ 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");
-- 
2.8.3

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