Actually fix hendrycks math

lm_eval/tasks/hendrycks_math.py

@@ -16,13 +16,12 @@ class Math(Task):
     DATASET_PATH = Path('data/MATH')
 
     def download(self):
-        if not (self.DATASET_PATH / 'done').exists():
+        if not (self.DATASET_PATH / 'test').exists() or not (self.DATASET_PATH / 'done').exists():
             sh(f"mkdir -p {self.DATASET_PATH}")
-            download_file("https://people.eecs.berkeley.edu/~hendrycks/MATH.tar", f"{self.DATASET_PATH}.tar.gz", "01256fd7cd5430596fdf07e6e6a5827111b5235b7ffed679c662a12f898932da")
+            download_file("https://people.eecs.berkeley.edu/~hendrycks/MATH.tar", f"{self.DATASET_PATH}.tar", "01256fd7cd5430596fdf07e6e6a5827111b5235b7ffed679c662a12f898932da")
             sh(f"""
-            tar -xf {self.DATASET_PATH}.tar -C data/
+            tar -xf {self.DATASET_PATH}.tar -C data/ && touch {self.DATASET_PATH / 'done'}
             rm {self.DATASET_PATH}.tar
-            touch {self.DATASET_PATH / 'done'}
             """)
 
     @abc.abstractmethod