new(test): setup gRPC output test case

Co-authored-by: Lorenzo Fontana <lo@linux.com>
Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

test/confs/grpc_unix_socket.yaml

@@ -0,0 +1,38 @@
+#
+# Copyright (C) 2020 The Falco Authors.
+#
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Whether to output events in json or text.
+json_output: false
+
+# Send information logs to stderr and/or syslog
+# Note these are *not* security notification logs!
+# These are just Falco lifecycle (and possibly error) logs.
+log_stderr: false
+log_syslog: false
+
+# Where security notifications should go.
+stdout_output:
+  enabled: false
+
+# gRPC server using an unix socket.
+grpc:
+    enabled: true
+    bind_address: "unix:////tmp/falco.sock"
+    threadiness: 8
+
+grpc_output:
+  enabled: true

test/falco_tests.yaml

@@ -672,6 +672,20 @@ trace_files: !mux
     outputs:
       - /tmp/falco_outputs/program_output.txt: Warning An open was seen
 
+  grpc_unix_socket_outputs:
+    detect: True
+    detect_level: WARNING
+    rules_file:
+      - rules/single_rule.yaml
+    conf_file: confs/grpc_unix_socket.yaml
+    grpc:
+      address: unix:///tmp/falco.sock
+      proto: output.proto
+      service: falco.output.service
+      method: subscribe
+      results:
+        - "Warning An open was seen"
+
   detect_counts:
     detect: True
     detect_level: WARNING