make mock args consistent with actual functions

Author: teemukataja

tests/test_basic.py

@@ -59,15 +59,15 @@ async def create_tables(self, sql_file):
         """Mimic create_tables."""
         pass
 
-    async def insert_variants(self, dataset_id, variants, len_samples):
+    async def insert_variants(self, dataset_id, variants, min_ac):
         """Mimic insert_variants."""
         pass
 
     async def load_metadata(self, vcf, metafile, datafile):
         """Mimic load_metadata."""
         pass
 
-    async def load_datafile(self, vcf, datafile, datasetId, min_ac=1):
+    async def load_datafile(self, vcf, datafile, datasetId, n=1000, min_ac=1):
         """Mimic load_datafile."""
         return ["datasetId", "variants"]