From b4cd9e2043ad20d5c7258d1690be098063a00505 Mon Sep 17 00:00:00 2001
From: Christophe Bedard <bedard.christophe@gmail.com>
Date: Tue, 31 Dec 2019 15:09:35 -0500
Subject: [PATCH] Add AutoProcessor test

---
 .../tracetools_analysis/test_autoprocessor.py | 180 ++++++++++++++++++
 1 file changed, 180 insertions(+)
 create mode 100644 tracetools_analysis/test/tracetools_analysis/test_autoprocessor.py

diff --git a/tracetools_analysis/test/tracetools_analysis/test_autoprocessor.py b/tracetools_analysis/test/tracetools_analysis/test_autoprocessor.py
new file mode 100644
index 0000000..4bd4263
--- /dev/null
+++ b/tracetools_analysis/test/tracetools_analysis/test_autoprocessor.py
@@ -0,0 +1,180 @@
+# Copyright 2019 Apex.AI, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Dict
+from typing import List
+import unittest
+
+from tracetools_analysis.processor import AutoProcessor
+from tracetools_analysis.processor import EventHandler
+from tracetools_analysis.processor import EventMetadata
+
+
+class AbstractEventHandler(EventHandler):
+
+    def __init__(self, **kwargs) -> None:
+        if type(self) is AbstractEventHandler:
+            raise RuntimeError()
+        super().__init__(**kwargs)
+
+
+class SubSubEventHandler(AbstractEventHandler):
+
+    def __init__(self) -> None:
+        handler_map = {
+            'myeventname': self._handler_whatever,
+            'myeventname69': self._handler_whatever,
+        }
+        super().__init__(handler_map=handler_map)
+
+    @staticmethod
+    def required_events() -> List[str]:
+        return [
+            'myeventname',
+            'myeventname69',
+        ]
+
+    def _handler_whatever(
+        self, event: Dict, metadata: EventMetadata
+    ) -> None:
+        pass
+
+
+class SubSubEventHandler2(AbstractEventHandler):
+
+    def __init__(self) -> None:
+        handler_map = {
+            'myeventname2': self._handler_whatever,
+        }
+        super().__init__(handler_map=handler_map)
+
+    @staticmethod
+    def required_events() -> List[str]:
+        return [
+            'myeventname2',
+        ]
+
+    def _handler_whatever(
+        self, event: Dict, metadata: EventMetadata
+    ) -> None:
+        pass
+
+
+class SubEventHandler(EventHandler):
+
+    def __init__(self) -> None:
+        handler_map = {
+            'myeventname3': self._handler_whatever,
+        }
+        super().__init__(handler_map=handler_map)
+
+    @staticmethod
+    def required_events() -> List[str]:
+        return [
+            'myeventname3',
+        ]
+
+    def _handler_whatever(
+        self, event: Dict, metadata: EventMetadata
+    ) -> None:
+        pass
+
+
+class TestAutoProcessor(unittest.TestCase):
+
+    def __init__(self, *args) -> None:
+        super().__init__(
+            *args,
+        )
+
+    def test_separate_methods(self) -> None:
+        # Testing logic/methods separately, since we don't actually want to process
+
+        # Getting subclasses
+        subclasses = AutoProcessor._get_subclasses(EventHandler)
+        # Will also contain the real classes
+        self.assertTrue(
+            all(
+                handler in subclasses
+                for handler in [
+                    AbstractEventHandler,
+                    SubSubEventHandler,
+                    SubSubEventHandler2,
+                    SubEventHandler,
+                ]
+            )
+        )
+
+        # Finding applicable classes
+        event_names = {
+            'myeventname',
+            'myeventname2',
+            'myeventname3',
+        }
+        applicable_handler_classes = AutoProcessor._get_applicable_event_handler_classes(
+            event_names,
+            subclasses,
+        )
+        self.assertTrue(
+            all(
+                handler in applicable_handler_classes
+                for handler in [
+                    AbstractEventHandler,
+                    SubSubEventHandler2,
+                    SubEventHandler,
+                ]
+            ) and
+            SubSubEventHandler not in applicable_handler_classes
+        )
+
+        # Creating instances
+        instances = AutoProcessor._get_event_handler_instances(applicable_handler_classes)
+        for instance in instances:
+            self.assertTrue(type(instance) is not AbstractEventHandler)
+
+    def test_all(self) -> None:
+        # Test the main method with all the logic
+        events = [
+            {
+                '_name': 'myeventname',
+                '_timestamp': 0,
+                'cpu_id': 0,
+            },
+            {
+                '_name': 'myeventname2',
+                '_timestamp': 69,
+                'cpu_id': 0,
+            },
+            {
+                '_name': 'myeventname3',
+                '_timestamp': 6969,
+                'cpu_id': 0,
+            },
+        ]
+        instances = AutoProcessor.get_applicable_event_handlers(events)
+        for instance in instances:
+            self.assertTrue(type(instance) is not AbstractEventHandler)
+        # Will also contain the real classes
+        self.assertEqual(
+            sum(
+                isinstance(instance, handler_class)
+                for handler_class in [SubEventHandler, SubSubEventHandler2]
+                for instance in instances
+            ),
+            2,
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()