Add more tests for rendering to PNG. Start adding tests for rendering to Gerber format. Changed definition of no hole to use None instead of 0 so we can differentiate when writing to Gerber format. Makde polygon use hole diameter instead of hole radius to match other primitives

1 files changed, 15 insertions, 2 deletions

diff --git a/gerber/tests/test_cairo_backend.py b/gerber/tests/test_cairo_backend.py
index 38cffba..f358235 100644
--- a/gerber/tests/test_cairo_backend.py
+++ b/gerber/tests/test_cairo_backend.py
@@ -6,7 +6,7 @@ import io
 import os
 
 from ..render.cairo_backend import GerberCairoContext
-from ..rs274x import read, GerberFile
+from ..rs274x import read
 from .tests import *
 from nose.tools import assert_tuple_equal
 
@@ -121,7 +121,20 @@ def test_flash_obround():
 def test_flash_polygon():
     """Umaco example a simple polygon flash with and without a hole"""
 
-    _test_render('resources/example_flash_polygon.gbr', 'golden/example_flash_polygon.png', 'golden/example_flash_polygon.png')
+    _test_render('resources/example_flash_polygon.gbr', 'golden/example_flash_polygon.png')
+
+
+def test_holes_dont_clear():
+    """Umaco example that an aperture with a hole does not clear the area"""
+
+    _test_render('resources/example_holes_dont_clear.gbr', 'golden/example_holes_dont_clear.png')
+
+
+def test_render_am_exposure_modifier():
+    """Umaco example that an aperture macro with a hole does not clear the area"""
+
+    _test_render('resources/example_am_exposure_modifier.gbr', 'golden/example_am_exposure_modifier.png')
+
 
 def _resolve_path(path):
     return os.path.join(os.path.dirname(__file__),