add a function to collect the pressure

sensors/collector/collector.py

@@ -14,7 +14,8 @@ def get_temperature():
 
 
 def get_pressure():
-    return sense.get_pressure()
+    raw_pressure = sense.get_pressure()
+    return round(raw_pressure, 1)
 
 
 def get_humidity():

sensors/collector/tests/test_collector.py

@@ -14,3 +14,11 @@ def test_temp_collector(monkeypatch):
 
     monkeypatch.setattr(collector.sense, 'get_temperature', mock_temp)
     assert collector.get_temperature() == 25.3
+
+
+def test_pressure_collector(monkeypatch):
+    def mock_pressure():
+        return 1013.345
+
+    monkeypatch.setattr(collector.sense, 'get_pressure', mock_pressure)
+    assert collector.get_pressure() == 1013.3