From: =?UTF-8?q?Jakub=20Bere=C5=BCa=C5=84ski?= <kuba@berezanscy.pl>

Make sure the helper does not crash when blank username and password is
provided. If the helper can save such credentials, it should be able to
read them back.

Signed-off-by: Jakub Bereżański <kuba@berezanscy.pl>
---
 t/lib-credential.sh | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/t/lib-credential.sh b/t/lib-credential.sh
index d8e41f7ddd1..937b831ea67 100755
--- a/t/lib-credential.sh
+++ b/t/lib-credential.sh
@@ -44,6 +44,7 @@ helper_test_clean() {
 	reject $1 https example.com user2
 	reject $1 http path.tld user
 	reject $1 https timeout.tld user
+	reject $1 https sso.tld
 }
 
 reject() {
@@ -250,6 +251,24 @@ helper_test() {
 		password=pass2
 		EOF
 	'
+
+	test_expect_success "helper ($HELPER) can store empty username" '
+		check approve $HELPER <<-\EOF &&
+		protocol=https
+		host=sso.tld
+		username=
+		password=
+		EOF
+		check fill $HELPER <<-\EOF
+		protocol=https
+		host=sso.tld
+		--
+		protocol=https
+		host=sso.tld
+		username=
+		password=
+		EOF
+	'
 }
 
 helper_test_timeout() {
-- 
2.15.0.windows.1