Added first version of DebugManager. Implemented draft of the rule engine

tests/core/test_SheerkaEventManager.py

@@ -0,0 +1,66 @@
+from core.sheerka.services.SheerkaEventManager import SheerkaEventManager
+
+from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
+
+
+def example_of_function(context):
+    print(f"example_of_class_method. event={context.event.get_digest()}")
+
+
+def example_of_function_with_data(context, data):
+    print(f"example_of_class_method. event={context.event.get_digest()}, {data=}")
+
+
+class TestSheerkaEventManager(TestUsingMemoryBasedSheerka):
+
+    def example_of_class_method(self, context):
+        print(f"example_of_class_method. event={context.event.get_digest()}")
+
+    @staticmethod
+    def example_of_static_method(context):
+        print(f"example_of_static_method. event={context.event.get_digest()}")
+
+    def example_of_class_method_with_data(self, context, data):
+        print(f"example_of_class_method. event={context.event.get_digest()}, {data=}")
+
+    @staticmethod
+    def example_of_static_method_with_data(context, data):
+        print(f"example_of_static_method. event={context.event.get_digest()}, {data=}")
+
+    def test_i_can_subscribe_and_publish(self, capsys):
+        sheerka, context = self.init_concepts()
+        topic = "my topic"
+
+        sheerka.subscribe(topic, self.example_of_class_method)
+        sheerka.subscribe(topic, self.example_of_static_method)
+        sheerka.subscribe(topic, example_of_function)
+
+        sheerka.publish(context, topic)
+
+        captured = capsys.readouterr()
+        assert captured.out == """example_of_class_method. event=xxx
+example_of_static_method. event=xxx
+example_of_class_method. event=xxx
+"""
+
+        service = sheerka.services[SheerkaEventManager.NAME]
+        service.reset_topic(topic)
+
+    def test_i_can_subscribe_and_publish_with_data(self, capsys):
+        sheerka, context = self.init_concepts()
+        topic = "my topic"
+
+        sheerka.subscribe(topic, self.example_of_class_method_with_data)
+        sheerka.subscribe(topic, self.example_of_static_method_with_data)
+        sheerka.subscribe(topic, example_of_function_with_data)
+
+        sheerka.publish(context, topic, "42")
+
+        captured = capsys.readouterr()
+        assert captured.out == """example_of_class_method. event=xxx, data='42'
+example_of_static_method. event=xxx, data='42'
+example_of_class_method. event=xxx, data='42'
+"""
+
+        service = sheerka.services[SheerkaEventManager.NAME]
+        service.reset_topic(topic)