new(test): test case about illogical drop actions

Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

test/README.md

@@ -26,7 +26,7 @@ make test-trace-files
 
 It prepares the fixtures (`json` and `scap` files) needed by the integration tests.
 
-Using `virtualenv` the steps to locally run a specific test suite are the following ones (from this directory):
+Using `virtualenv` the steps to locally run a specific test suite are the following ones (**from this directory**):
 
 ```console
 virtualenv venv

test/confs/drops_ignore_log.yaml

@@ -0,0 +1,12 @@
+syscall_event_drops:
+  actions:
+    - ignore
+    - log
+  rate: .03333
+  max_burst: 10
+  simulate_drops: true
+
+stdout_output:
+  enabled: true
+
+log_stderr: true

test/falco_tests.yaml

@@ -1227,6 +1227,15 @@ trace_files: !mux
     stdout_not_contains:
       - "Falco internal: syscall event drop"
 
+  monitor_syscall_drops_ignore_and_log:
+    exit_status: 1
+    rules_file:
+      - rules/single_rule.yaml
+    conf_file: confs/drops_ignore_log.yaml
+    trace_file: trace_files/ping_sendto.scap
+    stderr_contains:
+      - "syscall event drop action \"log\" does not make sense with the \"ignore\" action"
+
   monitor_syscall_drops_log:
     exit_status: 0
     rules_file: