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import inspect
import pytest
from streamz import Source, Stream
class MockEntryPoint:
def __init__(self, name, cls, module_name=None):
self.name = name
self.cls = cls
self.module_name = module_name
def load(self):
return self.cls
def test_register_plugin_entry_point():
class test_stream(Stream):
pass
entry_point = MockEntryPoint("test_node", test_stream)
Stream.register_plugin_entry_point(entry_point)
assert Stream.test_node.__name__ == "stub"
Stream().test_node()
assert Stream.test_node.__name__ == "test_stream"
def test_register_plugin_entry_point_modifier():
class test_source(Source):
pass
entry_point = MockEntryPoint("from_test", test_source)
Stream.register_plugin_entry_point(entry_point, staticmethod)
Stream.from_test()
assert inspect.isfunction(Stream().from_test)
def test_register_plugin_entry_point_raises_type():
class invalid_node:
pass
entry_point = MockEntryPoint("test", invalid_node, "test_module.test")
Stream.register_plugin_entry_point(entry_point)
with pytest.raises(TypeError):
Stream.test()
def test_register_plugin_entry_point_raises_duplicate_name():
entry_point = MockEntryPoint("map", None)
with pytest.raises(ValueError):
Stream.register_plugin_entry_point(entry_point)
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