diff --git a/vendor/github.com/fullstorydev/grpcurl/mk-test-files.sh b/vendor/github.com/fullstorydev/grpcurl/mk-test-files.sh
new file mode 100644
index 0000000..407f7dc
--- /dev/null
+++ b/vendor/github.com/fullstorydev/grpcurl/mk-test-files.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -e
+
+cd "$(dirname $0)"
+
+# Run this script to generate files used by tests.
+
+echo "Creating protosets..."
+protoc testing/test.proto \
+	--include_imports \
+	--descriptor_set_out=testing/test.protoset
+
+protoc testing/example.proto \
+	--include_imports \
+	--descriptor_set_out=testing/example.protoset
+
+echo "Creating certs for TLS testing..."
+if ! hash certstrap 2>/dev/null; then
+  # certstrap not found: try to install it
+  go get github.com/square/certstrap
+  go install github.com/square/certstrap
+fi
+
+function cs() {
+	certstrap --depot-path testing/tls "$@" --passphrase ""
+}
+
+rm -rf testing/tls
+
+# Create CA
+cs init --years 10 --common-name ca
+
+# Create client cert
+cs request-cert --common-name client
+cs sign client --years 10 --CA ca
+
+# Create server cert
+cs request-cert --common-name server --ip 127.0.0.1 --domain localhost
+cs sign server --years 10 --CA ca
+
+# Create another server cert for error testing
+cs request-cert --common-name other --ip 1.2.3.4 --domain foobar.com
+cs sign other --years 10 --CA ca
+
+# Create another CA and client cert for more
+# error testing
+cs init --years 10 --common-name wrong-ca
+cs request-cert --common-name wrong-client
+cs sign wrong-client --years 10 --CA wrong-ca
+
+# Create expired cert
+cs request-cert --common-name expired --ip 127.0.0.1 --domain localhost
+cs sign expired --years 0 --CA ca