Add unshielded single wire test data files in FreeCAD and STEP formats

Author: lmdiazangulo

testData/unshielded_single_wire/unshielded_single_wire.FCStd

@@ -0,0 +1,10 @@
+{
+    "CrossSection": [
+        {
+            "name": "Conductor",
+            "material": {
+                "type": "PEC"
+            }
+        }
+    ]
+}

testData/unshielded_single_wire/unshielded_single_wire.json

@@ -0,0 +1,79 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('FreeCAD Model'),'2;1');
+FILE_NAME('Open CASCADE Shape Model','2026-03-11T12:53:42',(''),(''),
+  'Open CASCADE STEP processor 7.8','FreeCAD','Unknown');
+FILE_SCHEMA(('AUTOMOTIVE_DESIGN { 1 0 10303 214 1 1 1 1 }'));
+ENDSEC;
+DATA;
+#1 = APPLICATION_PROTOCOL_DEFINITION('international standard',
+  'automotive_design',2000,#2);
+#2 = APPLICATION_CONTEXT(
+  'core data for automotive mechanical design processes');
+#3 = SHAPE_DEFINITION_REPRESENTATION(#4,#10);
+#4 = PRODUCT_DEFINITION_SHAPE('','',#5);
+#5 = PRODUCT_DEFINITION('design','',#6,#9);
+#6 = PRODUCT_DEFINITION_FORMATION('','',#7);
+#7 = PRODUCT('Conductor','Conductor','',(#8));
+#8 = PRODUCT_CONTEXT('',#2,'mechanical');
+#9 = PRODUCT_DEFINITION_CONTEXT('part definition',#2,'design');
+#10 = MANIFOLD_SURFACE_SHAPE_REPRESENTATION('',(#11,#15),#42);
+#11 = AXIS2_PLACEMENT_3D('',#12,#13,#14);
+#12 = CARTESIAN_POINT('',(0.,0.,0.));
+#13 = DIRECTION('',(0.,0.,1.));
+#14 = DIRECTION('',(1.,0.,-0.));
+#15 = SHELL_BASED_SURFACE_MODEL('',(#16));
+#16 = OPEN_SHELL('',(#17));
+#17 = ADVANCED_FACE('',(#18),#31,.T.);
+#18 = FACE_BOUND('',#19,.T.);
+#19 = EDGE_LOOP('',(#20));
+#20 = ORIENTED_EDGE('',*,*,#21,.T.);
+#21 = EDGE_CURVE('',#22,#22,#24,.T.);
+#22 = VERTEX_POINT('',#23);
+#23 = CARTESIAN_POINT('',(21.,0.,0.));
+#24 = SURFACE_CURVE('',#25,(#30),.PCURVE_S1.);
+#25 = CIRCLE('',#26,1.);
+#26 = AXIS2_PLACEMENT_3D('',#27,#28,#29);
+#27 = CARTESIAN_POINT('',(20.,0.,0.));
+#28 = DIRECTION('',(0.,0.,1.));
+#29 = DIRECTION('',(1.,0.,0.));
+#30 = PCURVE('',#31,#36);
+#31 = PLANE('',#32);
+#32 = AXIS2_PLACEMENT_3D('',#33,#34,#35);
+#33 = CARTESIAN_POINT('',(20.,1.910944170279E-18,0.));
+#34 = DIRECTION('',(0.,0.,1.));
+#35 = DIRECTION('',(1.,0.,0.));
+#36 = DEFINITIONAL_REPRESENTATION('',(#37),#41);
+#37 = CIRCLE('',#38,1.);
+#38 = AXIS2_PLACEMENT_2D('',#39,#40);
+#39 = CARTESIAN_POINT('',(0.,-1.910944170279E-18));
+#40 = DIRECTION('',(1.,0.));
+#41 = ( GEOMETRIC_REPRESENTATION_CONTEXT(2) 
+PARAMETRIC_REPRESENTATION_CONTEXT() REPRESENTATION_CONTEXT('2D SPACE',''
+  ) );
+#42 = ( GEOMETRIC_REPRESENTATION_CONTEXT(3) 
+GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#46)) GLOBAL_UNIT_ASSIGNED_CONTEXT(
+(#43,#44,#45)) REPRESENTATION_CONTEXT('Context #1',
+  '3D Context with UNIT and UNCERTAINTY') );
+#43 = ( LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI.,.METRE.) );
+#44 = ( NAMED_UNIT(*) PLANE_ANGLE_UNIT() SI_UNIT($,.RADIAN.) );
+#45 = ( NAMED_UNIT(*) SI_UNIT($,.STERADIAN.) SOLID_ANGLE_UNIT() );
+#46 = UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(1.E-07),#43,
+  'distance_accuracy_value','confusion accuracy');
+#47 = PRODUCT_RELATED_PRODUCT_CATEGORY('part',$,(#7));
+#48 = MECHANICAL_DESIGN_GEOMETRIC_PRESENTATION_REPRESENTATION('',(#49),
+  #42);
+#49 = STYLED_ITEM('color',(#50),#17);
+#50 = PRESENTATION_STYLE_ASSIGNMENT((#51,#57));
+#51 = SURFACE_STYLE_USAGE(.BOTH.,#52);
+#52 = SURFACE_SIDE_STYLE('',(#53));
+#53 = SURFACE_STYLE_FILL_AREA(#54);
+#54 = FILL_AREA_STYLE('',(#55));
+#55 = FILL_AREA_STYLE_COLOUR('',#56);
+#56 = COLOUR_RGB('',0.800000010877,0.800000010877,0.800000010877);
+#57 = CURVE_STYLE('',#58,POSITIVE_LENGTH_MEASURE(0.1),#59);
+#58 = DRAUGHTING_PRE_DEFINED_CURVE_FONT('continuous');
+#59 = COLOUR_RGB('',9.803921802644E-02,9.803921802644E-02,
+  9.803921802644E-02);
+ENDSEC;
+END-ISO-10303-21;