[Refactor:Plagiarism] Change format of regex field (#61)

* Switch regex to use an array of selectors instead of a comma-separated string

* Update tests

Author: williamjallen

bin/concatenate_all.py

@@ -73,7 +73,7 @@ def parse_args():
 
 def validate(config, args):
     # load parameters from the config to be checked
-    regex_patterns = config["regex"].split(',')
+    regex_patterns = config["regex"]
     regex_dirs = config["regex_dirs"]
     language = config["language"]
     threshold = int(config["threshold"])
@@ -139,7 +139,7 @@ def main():
     course = config["course"]
     gradeable = config["gradeable"]
     version_mode = config["version"]
-    regex_patterns = config["regex"].split(',')
+    regex_patterns = config["regex"]
     regex_dirs = config["regex_dirs"]
     prior_term_gradeables = config["prior_term_gradeables"]
     users_to_ignore = config["ignore_submissions"]

tests/data/test_lichen/repeated_sequences/expected_output/config.json

@@ -4,7 +4,7 @@
     "gradeable": "repeated_sequences",
     "config_id": "1",
     "version": "all_versions",
-    "regex": "",
+    "regex": [""],
     "regex_dirs": [
         "submissions"
     ],
@@ -13,4 +13,4 @@
     "sequence_length": 4,
     "prior_term_gradeables": [],
     "ignore_submissions": []
-}
+}

tests/data/test_lichen/repeated_sequences/input/config.json

@@ -4,7 +4,7 @@
     "gradeable": "repeated_sequences",
     "config_id": "1",
     "version": "all_versions",
-    "regex": "",
+    "regex": [""],
     "regex_dirs": [
         "submissions"
     ],