Allow CI tests to select the directory where their cache and corpus will be placed (#213)

Author: jeremyfowers

src/turnkeyml/common/test_helpers.py

@@ -100,9 +100,12 @@ def forward(self, x):
 }
 
 
-def create_test_dir(key: str, test_scripts: Dict = None):
+def create_test_dir(
+    key: str,
+    test_scripts: Dict = None,
+    base_dir: str = os.path.dirname(os.path.abspath(__file__)),
+):
     # Define paths to be used
-    base_dir = os.path.dirname(os.path.abspath(__file__))
     cache_dir = os.path.join(base_dir, "generated", f"{key}_cache_dir")
     corpus_dir = os.path.join(base_dir, "generated", "test_corpus")