Fixes for svgpcb library generation

Author: ducky64

edg/abstract_parts/AbstractAntenna.py

@@ -7,7 +7,7 @@
 @abstract_block
 class Antenna(Interface, Block):
   @init_in_parent
-  def __init__(self, frequency: RangeLike, impedance: RangeLike = Range.all(), power: RangeLike = (0, 0*Watt)):
+  def __init__(self, frequency: RangeLike, impedance: RangeLike = Range.all(), power: RangeLike = (0, 0)*Watt):
     super().__init__()
 
     self.frequency = self.ArgParameter(frequency)

edg/electronics_model/KiCadSchematicParser.py

@@ -13,9 +13,9 @@
 
 
 TestCastType = TypeVar('TestCastType')
-def test_cast(x: Any, type: Type[TestCastType]) -> TestCastType:
+def test_cast(x: Any, tpe: Type[TestCastType]) -> TestCastType:
   """Combination of (dynamic) isinstance test and static typing cast."""
-  assert isinstance(x, type)
+  assert isinstance(x, tpe), f"got {x} of type {type(x)}, expected {tpe}"
   return x
 
 def extract_only(x: List[TestCastType]) -> TestCastType: