def test_service_delegate_tile(linked_tile):
"""Make sure our service delegate tile works correctly."""
hw = linked_tile # pylint:disable=invalid-name; We use hw throughout CoreTools to denote a HardwareManager instance
# Normally this is not required but since we are conecting to a
# virtual tile that doesn't have a known proxy ('bsctst'), we need
# to temporarily register the proxy that we would like to use othweise
# we will get a:
# HardwareError: HardwareError: Could not find proxy object for tile
# Additional Information:
# - known_names: ['Simple', 'NO APP']
# - name: 'bsctst'
HardwareManager.RegisterDevelopmentProxy(BasicRPCDispatcherProxy)
# When we call get(address) the HardwareManager will ask the tile at that address,
# in this case the ServiceDelegateTile what it's 6 character name is. It will
# return, in this case 'bsctst' because that's what we put in the config.json
# file we created in the linked_tile fixture. The HardwareManager will then
# look up in its dictionary of known proxies for one whose ModuleName() exactly
# matches and return that object.
proxy = hw.get(11)
result = proxy.add(5, 1)
assert result == 5 + 1
def LoadFromFile(cls, script_path):
"""Import a virtual tile from a file rather than an installed module
script_path must point to a python file ending in .py that contains exactly one
VirtualTile class definition. That class is loaded and executed as if it
were installed.
To facilitate development, if there is a proxy object defined in the same
file, it is also added to the HardwareManager proxy registry so that it
can be found and used with the device.
Args:
script_path (string): The path to the script to load
Returns:
VirtualTile: A subclass of VirtualTile that was loaded from script_path
"""
search_dir, filename = os.path.split(script_path)
if search_dir == '':
search_dir = './'
if filename == '' or not os.path.exists(script_path):
raise ArgumentError("Could not find script to load virtual tile",
path=script_path)
module_name, ext = os.path.splitext(filename)
if ext != '.py':
raise ArgumentError("Script did not end with .py",
filename=filename)
try:
file_obj = None
file_obj, pathname, desc = imp.find_module(module_name,
[search_dir])
mod = imp.load_module(module_name, file_obj, pathname, desc)
finally:
if file_obj is not None:
file_obj.close()
devs = [
x for x in itervalues(mod.__dict__) if inspect.isclass(x)
and issubclass(x, VirtualTile) and x != VirtualTile
]
if len(devs) == 0:
raise ArgumentError(
"No VirtualTiles subclasses were defined in script",
path=script_path)
elif len(devs) > 1:
raise ArgumentError(
"More than one VirtualTiles subclass was defined in script",
path=script_path,
tiles=devs)
# Allow automatically injecting associated proxy objects so that we can use this tile with a proxy without
# installing it.
proxies = [
x for x in itervalues(mod.__dict__) if inspect.isclass(x)
and issubclass(x, TileBusProxyObject) and x != TileBusProxyObject
]
for proxy in proxies:
HardwareManager.RegisterDevelopmentProxy(proxy)
return devs[0]
