test: update tests to new API

Author: NiallOswald

tests/conftest.py

@@ -1,13 +1,13 @@
 """Fixtures and test cases."""
 
-from typing import Callable
-
 from pytest_cases import fixture, parametrize_with_cases  # type: ignore
 
+from polyshell import ReductionMethod, ReductionMode, reduce_polygon
+
 
 @fixture(scope="class")
 @parametrize_with_cases("method", cases=".method_cases", scope="class")
 def simplified(
-    polygon: list[tuple[float, float]], method: Callable
+    polygon: list[tuple[float, float]], method: ReductionMethod
 ) -> list[tuple[float, float]]:
-    return method(polygon, eps=1e-6)
+    return reduce_polygon(polygon, ReductionMode.EPSILON, 1e-6, method)

tests/method_cases.py

@@ -1,15 +1,13 @@
-from typing import Callable
+from polyshell import ReductionMethod
 
-from polyshell import reduce_polygon_char, reduce_polygon_rdp, reduce_polygon_vw
 
+def case_char() -> ReductionMethod:
+    return ReductionMethod.CHARSHAPE
 
-def case_char() -> Callable:
-    return reduce_polygon_char
 
+def case_rdp() -> ReductionMethod:
+    return ReductionMethod.RDP
 
-def case_rdp() -> Callable:
-    return reduce_polygon_rdp
 
-
-def case_vw() -> Callable:
-    return reduce_polygon_vw
+def case_vw() -> ReductionMethod:
+    return ReductionMethod.VW