Adding agl-service-audiomixer tests for un/subscription.

Bug-AGL: SPEC-4053

Signed-off-by: wangqi <wangq.fnst@cn.fujitsu.com>
Change-Id: If600c334666cad7e6a15fee88633185aca001d05

2 files changed, 20 insertions, 2 deletions

diff --git a/pyagl/services/audiomixer.py b/pyagl/services/audiomixer.py
index fa9a7fd..41db856 100644
--- a/pyagl/services/audiomixer.py
+++ b/pyagl/services/audiomixer.py
@@ -33,10 +33,10 @@ class AudioMixerService(AGLBaseService):
     def __init__(self, ip, port=None, service='agl-service-audiomixer'):
         super().__init__(api='audiomixer', ip=ip, port=port, service=service)
 
-    async def subscribe(self, event='volume_changed'):  # audio mixer uses 'event' instead 'value',
+    async def subscribe(self, event=None):  # audio mixer uses 'event' instead 'value',
         return await self.request('subscribe', {'event': event})
 
-    async def unsubscribe(self, event='volume_changed'):
+    async def unsubscribe(self, event=None):
         return await self.request('unsubscribe', {'event': event})
 
     async def list_controls(self):
diff --git a/pyagl/tests/test_audiomixer.py b/pyagl/tests/test_audiomixer.py
index 5f9b7d0..2349486 100644
--- a/pyagl/tests/test_audiomixer.py
+++ b/pyagl/tests/test_audiomixer.py
@@ -101,3 +101,21 @@ async def test_set_unmute(event_loop, service: AMS):
     assert msgid == resp.msgid
     assert resp.type == AFBT.RESPONSE
     assert resp.status == 'success'
+
+
+@pytest.mark.audiomixer
+async def test_subscribe(event_loop,service: AMS):
+    msgid = await service.subscribe('volume_changed')
+    resp = await service.afbresponse()
+    assert msgid == resp.msgid
+    assert resp.type == AFBT.RESPONSE
+    assert resp.status == 'success'
+
+
+@pytest.mark.audiomixer
+async def test_unsubscribe(event_loop,service: AMS):
+    msgid = await service.unsubscribe('volume_changed')
+    resp = await service.afbresponse()
+    assert msgid == resp.msgid
+    assert resp.type == AFBT.RESPONSE
+    assert resp.status == 'success'