In rare cases, if there is a new piece of

content that has already been committed
to the current branch AND there are local,
uncommitted changes to that content,
GitService will pick up BOTH the fact that
this is new content AND the fact that it has been
modified. This will result in double-testing
the content. This commit removes that as
a possibility by adding content to be tested
to a SET instead of appending it to a LIST,
which couild have included duplicates.

contentctl/actions/detection_testing/GitService.py

@@ -67,9 +67,9 @@ def getChanges(self, target_branch:str)->List[Detection]:
 
         #Make a filename to content map
         filepath_to_content_map = { obj.file_path:obj for (_,obj) in self.director.name_to_content_map.items()} 
-        updated_detections:List[Detection] = []
-        updated_macros:List[Macro] = []
-        updated_lookups:List[Lookup] =[]
+        updated_detections:set[Detection] = set()
+        updated_macros:set[Macro] = set()
+        updated_lookups:set[Lookup] = set()
 
         for diff in all_diffs:
             if type(diff) == pygit2.Patch:
@@ -80,14 +80,14 @@ def getChanges(self, target_branch:str)->List[Detection]:
                     if decoded_path.is_relative_to(self.config.path/"detections") and decoded_path.suffix == ".yml":
                         detectionObject = filepath_to_content_map.get(decoded_path, None)
                         if isinstance(detectionObject, Detection):
-                            updated_detections.append(detectionObject)
+                            updated_detections.add(detectionObject)
                         else:
                             raise Exception(f"Error getting detection object for file {str(decoded_path)}")
 
                     elif decoded_path.is_relative_to(self.config.path/"macros") and decoded_path.suffix == ".yml":
                         macroObject = filepath_to_content_map.get(decoded_path, None)
                         if isinstance(macroObject, Macro):
-                            updated_macros.append(macroObject)
+                            updated_macros.add(macroObject)
                         else:
                             raise Exception(f"Error getting macro object for file {str(decoded_path)}")
 
@@ -98,7 +98,7 @@ def getChanges(self, target_branch:str)->List[Detection]:
                             updatedLookup = filepath_to_content_map.get(decoded_path, None)
                             if not isinstance(updatedLookup,Lookup):
                                 raise Exception(f"Expected {decoded_path} to be type {type(Lookup)}, but instead if was {(type(updatedLookup))}")
-                            updated_lookups.append(updatedLookup)
+                            updated_lookups.add(updatedLookup)
 
                         elif decoded_path.suffix == ".csv":
                             # If the CSV was updated, we want to make sure that we 
@@ -125,7 +125,7 @@ def getChanges(self, target_branch:str)->List[Detection]:
                         if updatedLookup is not None and updatedLookup not in updated_lookups:
                             # It is possible that both the CSV and YML have been modified for the same lookup,
                             # and we do not want to add it twice. 
-                            updated_lookups.append(updatedLookup)
+                            updated_lookups.add(updatedLookup)
 
                     else:
                         pass
@@ -136,7 +136,7 @@ def getChanges(self, target_branch:str)->List[Detection]:
 
         # If a detection has at least one dependency on changed content,
         # then we must test it again
-        changed_macros_and_lookups = updated_macros + updated_lookups
+        changed_macros_and_lookups:set[SecurityContentObject] = updated_macros.union(updated_lookups)
 
         for detection in self.director.detections:
             if detection in updated_detections:
@@ -146,14 +146,14 @@ def getChanges(self, target_branch:str)->List[Detection]:
 
             for obj in changed_macros_and_lookups:
                 if obj in detection.get_content_dependencies():
-                   updated_detections.append(detection)
+                   updated_detections.add(detection)
                    break
 
         #Print out the names of all modified/new content
         modifiedAndNewContentString = "\n - ".join(sorted([d.name for d in updated_detections]))
 
         print(f"[{len(updated_detections)}] Pieces of modifed and new content (this may include experimental/deprecated/manual_test content):\n - {modifiedAndNewContentString}")
-        return updated_detections
+        return sorted(list(updated_detections))
 
     def getSelected(self, detectionFilenames: List[FilePath]) -> List[Detection]:
         filepath_to_content_map: dict[FilePath, SecurityContentObject] = {