[PATCH 1/2] tests: introduce strip_header() helper function

[John Keeping]

This means that we can avoid hardcoding the number of headers we expect
CGit to generate in test cases and simply remove whatever headers happen
to by there when we are checking body content.

Signed-off-by: John Keeping <john at keeping.me.uk>
---
This was previously sent with a different command message and
justification[1] but wasn't picked up.  I still think this is a useful
function to have in the test suite and it's used by patch 2/2 here.

 tests/setup.sh          | 8 ++++++++
 tests/t0107-snapshot.sh | 4 ++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/tests/setup.sh b/tests/setup.sh
index a573444..1d8677a 100755
--- a/tests/setup.sh
+++ b/tests/setup.sh
@@ -98,4 +98,12 @@ cgit_url()
 	CGIT_CONFIG="$PWD/cgitrc" QUERY_STRING="url=$1" cgit
 }
 
+strip_headers () {
+	while read -r line
+	do
+		test -z "$line" && break
+	done
+	cat
+}
+
 test -z "$CGIT_TEST_NO_CREATE_REPOS" && setup_repos
diff --git a/tests/t0107-snapshot.sh b/tests/t0107-snapshot.sh
index 053062c..6cf7aaa 100755
--- a/tests/t0107-snapshot.sh
+++ b/tests/t0107-snapshot.sh
@@ -16,7 +16,7 @@ test_expect_success 'check html headers' '
 '
 
 test_expect_success 'strip off the header lines' '
-	tail -n +6 tmp > master.tar.gz
+	strip_headers <tmp >master.tar.gz
 '
 
 test_expect_success 'verify gzip format' '
@@ -51,7 +51,7 @@ test_expect_success 'check HTML headers (zip)' '
 '
 
 test_expect_success 'strip off the header lines (zip)' '
-	tail -n +6 tmp >master.zip
+	strip_headers <tmp >master.zip
 '
 
 if test -n "$(which unzip 2>/dev/null)"; then
-- 
1.8.3.rc2.285.gfc18c2c