Add test for designspaceLib.types.Range dataclass

test for https://github.com/fonttools/fonttools/pull/2597

NEWS.rst

@@ -1,5 +1,6 @@
 - [designspaceLib] Fixed typo in ``deepcopyExceptFonts`` method, preventing font
-  references to be transferred (#2600).
+  references to be transferred (#2600). Fixed another typo in the name of ``Range``
+  dataclass's ``__post_init__`` magic method (#2597).
 
 4.33.2 (released 2022-04-22)
 ----------------------------

Tests/designspaceLib/designspace_test.py

@@ -18,6 +18,7 @@ from fontTools.designspaceLib import (
     posix,
     processRules,
 )
+from fontTools.designspaceLib.types import Range
 from fontTools.misc import plistlib
 
 
@@ -1055,3 +1056,11 @@ def test_deepcopyExceptFonts():
     assert ds.tostring() == ds_copy.tostring()
     assert ds.sources[0].font is ds_copy.sources[0].font
     assert ds.sources[1].font is ds_copy.sources[1].font
+
+
+def test_Range_post_init():
+    # test min and max are sorted and default is clamped to either min/max
+    r = Range(minimum=2, maximum=-1, default=-2)
+    assert r.minimum == -1
+    assert r.maximum == 2
+    assert r.default == -1