Format floats using the intrinsic decimal precision instead of reduci…

…ng to 5 decimal places

Explicitly format floats in outline color test so they can be compared

PyPDF2/generic/_base.py

@@ -246,7 +246,7 @@ def __repr__(self) -> str:
             return str(self.quantize(decimal.Decimal(1)))
         else:
             # Standard formatting adds useless extraneous zeros.
-            o = f"{self:.5f}"
+            o = '{0:f}'.format(self)
             # Remove the zeros.
             while o and o[-1] == "0":
                 o = o[:-1]

tests/test_writer.py

@@ -1,3 +1,4 @@
+import decimal
 import os
 from io import BytesIO
 from pathlib import Path
@@ -777,7 +778,7 @@ def test_colors_in_outline_item():
     reader2 = PdfReader(target)
     for outline_item in reader2.outline:
         # convert float to string because of mutability
-        assert [str(c) for c in outline_item.color] == [str(p) for p in purple_rgb]
+        assert [f"{c:.5f}" for c in outline_item.color] == [f"{p:.5f}" for p in purple_rgb]
 
     # Cleanup
     os.remove(target)  # remove for testing