test: Fix comparison of tuple of floats in TestDxfDocument::test_spline (#1414)

Use pytest.approx instead of unnittest.assertEqual assertAlmostEqual.

Author: lorenzncode

tests/test_exporters.py

@@ -415,11 +415,14 @@ def test_spline(self):
         )
 
         self.assertEqual(expected_type, result_type)
-        self.assertAlmostEqual(
+
+        for expected, result in zip(
             expected_attributes["control_points"], result_attributes["control_points"]
-        )
+        ):
+            assert result == approx(expected)
+
         self.assertEqual(expected_attributes["order"], result_attributes["order"])
-        self.assertEqual(expected_attributes["knots"], result_attributes["knots"])
+        assert result_attributes["knots"] == approx(expected_attributes["knots"])
         self.assertEqual(expected_attributes["weights"], result_attributes["weights"])
 
     def test_add_layer_definition(self):