app_mixmonitor: Add tests for duplicate recording avoidance detection.

Related to: asterisk/asterisk#1512

Author: InterLinked1

tests/apps/mixmonitor_loop/configs/ast1/extensions.conf

@@ -0,0 +1,20 @@
+[default]
+exten => s,1,Answer()
+	same => n,Set(i=0)
+	same => n,While($[${INC(i)}<1100]) ; more than the default # of file descriptors per process
+		same => n,MixMonitor(test.wav)
+	same => n,EndWhile()
+	same => n,While($[${INC(i)}<2200])
+		same => n,MixMonitor(test2.wav,r(test2-rx.wav)t(test2-tx.wav))
+	same => n,EndWhile()
+	same => n,StopMixMonitor()
+	same => n,MixMonitor(test3.wav)
+	same => n,Wait(0.1)
+	same => n,StopMixMonitor()
+	same => n,ExecIf(${STAT(e,${AST_CONFIG(asterisk.conf,directories,astspooldir}/monitor/test3.wav)}?UserEvent(MixMonitorSuccess,Result: Pass):UserEvent(MixMonitorSuccess,Result: Fail))
+	same => n,Hangup()
+
+[nothing]
+exten => 0,1,Answer()
+	same => n,Wait(8)
+	same => n,Hangup()

tests/apps/mixmonitor_loop/test-config.yaml

@@ -0,0 +1,60 @@
+testinfo:
+    summary: 'Ensure that MixMonitor called in a loop acts sanely.'
+    description: |
+        'This tests calling MixMonitor in a loop to ensure that
+        duplicate recordings do not get opened, consuming all
+        available file descriptor resources.'
+
+test-modules:
+    test-object:
+        config-section: test-object-config
+        typename: 'test_case.TestCaseModule'
+    modules:
+        -
+            config-section: caller-originator
+            typename: 'pluggable_modules.Originator'
+        -
+            config-section: hangup-monitor
+            typename: 'pluggable_modules.HangupMonitor'
+        -
+            config-section: ami-config
+            typename: 'pluggable_modules.EventActionModule'
+
+test-object-config:
+    connect-ami: True
+
+caller-originator:
+    channel: 'Local/s@default'
+    context: 'nothing'
+    exten: '0'
+    priority: '1'
+    trigger: 'ami_connect'
+
+hangup-monitor:
+    ids: '0'
+
+ami-config:
+    -
+        ami-events:
+            conditions:
+                match:
+                    Event: 'UserEvent'
+                    UserEvent: 'MixMonitorSuccess'
+            requirements:
+                match:
+                    Result: 'Pass'
+            count: 1
+        stop_test:
+
+properties:
+    tags:
+        - dial
+        - apps
+    dependencies:
+        - python: 'twisted'
+        - python: 'starpy'
+        - asterisk: 'app_dial'
+        - asterisk: 'app_userevent'
+        - asterisk: 'app_originate'
+        - asterisk: 'app_mixmonitor'
+        - asterisk: 'pbx_config'

tests/apps/tests.yaml

@@ -15,6 +15,7 @@ tests:
     - test: 'mixmonitor_rxtx'
     - test: 'mixmonitor_audiohook_inherit'
     - test: 'mixmonitor_func'
+    - test: 'mixmonitor_loop'
     - dir: 'control_playback'
     - dir: 'playback'
     - test: 'say_interrupt'