Light cleanup on tests to avoid reptition of constants

.gitignore

@@ -28,3 +28,4 @@ __pycache__
 /.pytest_cache
 /tests/archive
 /BAC0/web/test
+/venv/

tests/test_1AddressesTypes.py

@@ -9,6 +9,8 @@
 import BAC0
 import pytest
 
+VENDOR_ID = 842
+
 @pytest.fixture(scope='session')
 def host_ip():
     hip = HostIP()
@@ -22,33 +24,33 @@ def host_ip():
 def test_WithIPProvided(host_ip):
     ip, subnet = host_ip
     bacnet_with_ip = BAC0.lite(ip=ip,port=47812)
-    assert bacnet_with_ip.vendorId == 842
+    assert bacnet_with_ip.vendorId == VENDOR_ID
     bacnet_with_ip.disconnect()
 
 @pytest.mark.skip("Works locally but nt in Travis")
 def test_WithIPAndMask(host_ip):
     ip, subnet = host_ip
     bacnet_with_ip = BAC0.lite(ip=ip, mask=subnet, port=47812)
-    assert bacnet_with_ip.vendorId == 842
+    assert bacnet_with_ip.vendorId == VENDOR_ID
     bacnet_with_ip.disconnect()
 
 @pytest.mark.skip("Works locally but not in Travis")    
 def test_WithIPAndMaskAndPort(host_ip):
     ip, subnet = host_ip
     bacnet_with_ip = BAC0.lite(ip=ip, mask=subnet, port=47812)
-    assert bacnet_with_ip.vendorId == 842
+    assert bacnet_with_ip.vendorId == VENDOR_ID
     bacnet_with_ip.disconnect()
 
 @pytest.mark.skip("Works locally but not in Travis")
 def test_WithIPAndMaskInString(host_ip):
     ip, subnet = host_ip
     bacnet_with_ip = BAC0.lite(ip='{}/{}'.format(ip,subnet),port=47812)
-    assert bacnet_with_ip.vendorId == 842
+    assert bacnet_with_ip.vendorId == VENDOR_ID
     bacnet_with_ip.disconnect()
 
 @pytest.mark.skip("Works locally but not in Travis")
 def test_WithIPAndMaskAndPortInString(host_ip):
     ip, subnet = host_ip
     bacnet_with_ip = BAC0.lite(ip='{}/{}:47812'.format(ip,subnet))
-    assert bacnet_with_ip.vendorId == 842
+    assert bacnet_with_ip.vendorId == VENDOR_ID
     bacnet_with_ip.disconnect() 

tests/test_Read.py

@@ -5,30 +5,34 @@
 Test Bacnet communication with another device
 """
 
+CHANGE_DELTA = 99.90
+TOLERANCE = 0.01
+BINARY_TEST_STATE = 'active'
+
 def test_ReadAV(network_and_devices):
     test_device = network_and_devices.test_device
-    assert (test_device['av0'] - 99.90) < 0.01
+    assert (test_device['av0'] - CHANGE_DELTA) < TOLERANCE
 
 def test_ReadMV(network_and_devices):
     test_device = network_and_devices.test_device
     assert test_device['mv0'].value == 1
 
 def test_ReadBV(network_and_devices):
     test_device = network_and_devices.test_device
-    assert test_device['bv0'].value == 'active'
+    assert test_device['bv0'].value == BINARY_TEST_STATE
 
 def test_ReadAI(network_and_devices):
     test_device = network_and_devices.test_device
-    assert (test_device['ai0'] - 99.90) < 0.01
+    assert (test_device['ai0'] - CHANGE_DELTA) < TOLERANCE
 
 def test_ReadAO(network_and_devices):
     test_device = network_and_devices.test_device
-    assert (test_device['ao0'] - 99.90) < 0.01
+    assert (test_device['ao0'] - CHANGE_DELTA) < TOLERANCE
 
 def test_ReadBI(network_and_devices):
     test_device = network_and_devices.test_device
-    assert test_device['bi0'].value == 'active'
+    assert test_device['bi0'].value == BINARY_TEST_STATE
 
 def test_ReadBO(network_and_devices):
     test_device = network_and_devices.test_device
-    assert test_device['bo0'].value == 'active'
+    assert test_device['bo0'].value == BINARY_TEST_STATE