Ignore comments in assertExactQueries

arkindex/project/tests/__init__.py

+import re
 from pathlib import Path
 from typing import Any, Callable, Iterable, Mapping, Optional, Union
 
@@ -29,12 +30,25 @@ class _AssertExactQueriesContext(CaptureQueriesContext):
         super().__init__(connection)
 
     def _format(self, query: str) -> str:
-        return sqlparse.format(
-            query,
-            reindent=True,
-            use_space_around_operators=True,
-            indent_width=4,
-        ).strip()
+        """
+        Format one or more SQL queries.
+
+        Does not allow more than two newlines at once (at most one empty line).
+        This still allows separating with empty lines in the expected SQL file,
+        but prevents duplicate empty lines from appearing;
+        sqlparse.format duplicates an empty line when it encounters one, causing assertion errors.
+        """
+        return re.sub(
+            r'\n\n+',
+            '\n\n',
+            sqlparse.format(
+                query,
+                reindent=True,
+                strip_comments=True,
+                use_space_around_operators=True,
+                indent_width=4,
+            ).strip()
+        )
 
     def __exit__(self, exc_type, exc_value, traceback):
         super().__exit__(exc_type, exc_value, traceback)
@@ -64,7 +78,7 @@ class _AssertExactQueriesContext(CaptureQueriesContext):
                 )
 
         # Ignore newlines in the expected SQL, otherwise the reformatting might have duplicate line breaks
-        expected_sql = self.path.read_text().strip().replace('\n', ' ')
+        expected_sql = self.path.read_text().strip()
 
         # Apply str.format on the SQL when needed to handle variable IDs
         if self.params: