Use Decimal for parsing JSON to mitigate precision problems

Argmaster · Jun 7, 2024 · 0b82717 · 0b82717
1 parent b4f239d
commit 0b82717
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/test/gerberx3/test_assets.py b/test/gerberx3/test_assets.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import decimal
 import json
 from dataclasses import dataclass
 
@@ -182,8 +183,14 @@ def test_parser2(asset: Asset, config: Config) -> None:
             ".parser2", asset.relative_path
         ).with_suffix(".json")
 
-        output_file_content = json.loads(output_file_path.read_text())
-        reference_file_content = json.loads(reference_path.read_text())
+        output_file_content = json.loads(
+            output_file_path.read_text(),
+            parse_float=lambda x: round(decimal.Decimal(x), 6),
+        )
+        reference_file_content = json.loads(
+            reference_path.read_text(),
+            parse_float=lambda x: round(decimal.Decimal(x), 6),
+        )
 
         assert output_file_content == reference_file_content