Adding unit tests and docstrings for editor test files

Signed-off-by: evanchia <evanchia@amazon.com>

Tools/LyTestTools/ly_test_tools/_internal/pytest_plugin/editor_test.py

@@ -3,9 +3,7 @@ Copyright (c) Contributors to the Open 3D Engine Project.
 For complete copyright and license terms please see the LICENSE at the root of this distribution.
 
 SPDX-License-Identifier: Apache-2.0 OR MIT
-"""
 
-"""
 Utility for specifying an Editor test, supports seamless parallelization and/or batching of tests.
 """
 
@@ -15,22 +13,41 @@ import inspect
 __test__ = False
 
 def pytest_addoption(parser):
+    # type (argparse.ArgumentParser) -> None
+    """
+    Options when running tests in batches or parallel.
+    :param parser: The ArgumentParser object
+    :return: None
+    """
     parser.addoption("--no-editor-batch", action="store_true", help="Don't batch multiple tests in single editor")
     parser.addoption("--no-editor-parallel", action="store_true", help="Don't run multiple editors in parallel")
     parser.addoption("--editors-parallel", type=int, action="store", help="Override the number editors to run at the same time")
 
-# Create a custom custom item collection if the class defines pytest_custom_makeitem function
-# This is used for automtically generating test functions with a custom collector
 def pytest_pycollect_makeitem(collector, name, obj):
+    # type (PyCollector, str, object) -> Collector
+    """
+    Create a custom custom item collection if the class defines pytest_custom_makeitem function. This is used for
+    automtically generating test functions with a custom collector.
+    :param collector: The Python test collector
+    :param name: Name of the collector
+    :param obj: The custom collector, normally an EditorTestSuite.EditorTestClass object
+    :return: Returns the custom collector
+    """
     if inspect.isclass(obj):
         for base in obj.__bases__:
             if hasattr(base, "pytest_custom_makeitem"):
                 return base.pytest_custom_makeitem(collector, name, obj)
 
-# Add custom modification of items.
-# This is used for adding the runners into the item list
 @pytest.hookimpl(hookwrapper=True)
 def pytest_collection_modifyitems(session, items, config):
+    # type (Session, list, Config) -> None
+    """
+    Add custom modification of items. This is used for adding the runners into the item list.
+    :param session: The Pytest Session
+    :param items: The test case functions
+    :param config: The Pytest Config object
+    :return: None
+    """
     all_classes = set()
     for item in items:
         all_classes.add(item.instance.__class__)
@@ -40,4 +57,4 @@ def pytest_collection_modifyitems(session, items, config):
     for cls in all_classes:
         if hasattr(cls, "pytest_custom_modify_items"):
             cls.pytest_custom_modify_items(session, items, config)
-                
+

Tools/LyTestTools/ly_test_tools/_internal/pytest_plugin/test_tools_fixtures.py

@@ -55,8 +55,16 @@ def pytest_configure(config):
     ly_test_tools._internal.pytest_plugin.build_directory = _get_build_directory(config)
     ly_test_tools._internal.pytest_plugin.output_path = _get_output_path(config)
 
-
 def pytest_pycollect_makeitem(collector, name, obj):
+    # type (PyCollector, str, object) -> Collector
+    """
+    Create a custom custom item collection if the class defines pytest_custom_makeitem function. This is used for
+    automtically generating test functions with a custom collector.
+    :param collector: The Python test collector
+    :param name: Name of the collector
+    :param obj: The custom collector, normally an EditorTestSuite.EditorTestClass object
+    :return: Returns the custom collector
+    """
     import inspect
     if inspect.isclass(obj):
         for base in obj.__bases__: