Adding importer unittests

tests/test_importers.py

@@ -0,0 +1,88 @@
+import os
+import unittest
+from build123d import (
+    BuildLine,
+    Line,
+    Bezier,
+    RadiusArc,
+)
+from build123d.importers import import_svg_as_buildline_code, import_brep
+from build123d.exporters import ExportSVG
+
+
+class ImportSVG(unittest.TestCase):
+    def test_import_svg_as_buildline_code(self):
+        # Create svg file
+        with BuildLine() as test_obj:
+            l1 = Bezier((0, 0), (0.25, -0.1), (0.5, -0.15), (1, 0))
+            l2 = Line(l1 @ 1, (1, 1))
+            l3 = RadiusArc(l2 @ 1, (0, 1), 2)
+            l4 = Line(l3 @ 1, l1 @ 0)
+        svg = ExportSVG()
+        svg.add_shape(test_obj.wires()[0], "")
+        svg.write("test.svg")
+
+        # Read the svg as code
+        buildline_code, builder_name = import_svg_as_buildline_code("test.svg")
+
+        # Execute it and convert to Edges
+        ex_locals = {}
+        exec(buildline_code, None, ex_locals)
+        test_obj: BuildLine = ex_locals[builder_name]
+        found = 0
+        for edge in test_obj.edges():
+            if edge.geom_type() == "BEZIER":
+                found += 1
+            elif edge.geom_type() == "LINE":
+                found += 1
+            elif edge.geom_type() == "ELLIPSE":
+                found += 1
+        self.assertEqual(found, 4)
+        os.remove("test.svg")
+
+    def test_import_svg_as_buildline_code_invalid_name(self):
+        # Create svg file
+        with BuildLine() as test_obj:
+            l1 = Bezier((0, 0), (0.25, -0.1), (0.5, -0.15), (1, 0))
+            l2 = Line(l1 @ 1, (1, 1))
+            l3 = RadiusArc(l2 @ 1, (0, 1), 2)
+            l4 = Line(l3 @ 1, l1 @ 0)
+        svg = ExportSVG()
+        svg.add_shape(test_obj.wires()[0], "")
+        svg.write("test!.svg")
+
+        # Read the svg as code
+        buildline_code, builder_name = import_svg_as_buildline_code("test!.svg")
+        os.remove("test!.svg")
+
+        self.assertEqual(builder_name, "builder")
+
+    # def test_import_svg_as_buildline_code_ccw(self):
+    #     # Create svg file
+    #     with BuildLine() as test_obj:
+    #         l3 = RadiusArc((0, 1), (0, 0), 1.5)
+    #     show(test_obj)
+    #     svg = ExportSVG()
+    #     svg.add_shape(test_obj.wires()[0], "")
+    #     svg.write("test.svg")
+
+    #     # Read the svg as code
+    #     buildline_code, builder_name = import_svg_as_buildline_code("test.svg")
+
+    #     # Execute it and convert to Edges
+    #     ex_locals = {}
+    #     exec(buildline_code, None, ex_locals)
+    #     test_obj: BuildLine = ex_locals[builder_name]
+    #     os.remove("test.svg")
+
+    #     self.assertEqual(test_obj.edges()[0].geom_type(), "ELLIPSE")
+
+
+class ImportBREP(unittest.TestCase):
+    def test_bad_filename(self):
+        with self.assertRaises(ValueError):
+            import_brep("test.brep")
+
+
+if __name__ == "__main__":
+    unittest.main()