Unit tests for PointInsidePen

Lib/fontTools/pens/pointInsidePen_test.py

@@ -0,0 +1,90 @@
+from __future__ import print_function, division, absolute_import
+from fontTools.misc.py23 import *
+from fontTools.pens.pointInsidePen import PointInsidePen
+import unittest
+
+
+class PointInsidePenTest(unittest.TestCase):
+    def test_line(self):
+        def draw_triangles(pen):
+            pen.moveTo((0,0)); pen.lineTo((10,5)); pen.lineTo((10,0))
+            pen.moveTo((9,1)); pen.lineTo((4,1)); pen.lineTo((9,4))
+            pen.closePath()
+
+        self.assertEquals(
+            " *********"
+            "   **    *"
+            "     **  *"
+            "       * *"
+            "         *",
+            self.render(draw_triangles, even_odd=True))
+
+        self.assertEquals(
+            " *********"
+            "   *******"
+            "     *****"
+            "       ***"
+            "         *",
+            self.render(draw_triangles, even_odd=False))
+
+    def test_curve(self):
+        def draw_curves(pen):
+            pen.moveTo((0,0)); pen.curveTo((9,1), (9,4), (0,5))
+            pen.moveTo((10,5)); pen.curveTo((1,4), (1,1), (10,0))
+            pen.closePath()
+
+        self.assertEquals(
+            "***    ***"
+            "****  ****"
+            "***    ***"
+            "****  ****"
+            "***    ***",
+            self.render(draw_curves, even_odd=True))
+
+        self.assertEquals(
+            "***    ***"
+            "**********"
+            "**********"
+            "**********"
+            "***    ***",
+            self.render(draw_curves, even_odd=False))
+
+    def test_qCurve(self):
+        def draw_qCurves(pen):
+            pen.moveTo((0,0)); pen.qCurveTo((15,2), (0,5))
+            pen.moveTo((10,5)); pen.qCurveTo((-5,3), (10,0))
+            pen.closePath()
+
+        self.assertEquals(
+            "***     **"
+            "****   ***"
+            "***    ***"
+            "***   ****"
+            "**     ***",
+            self.render(draw_qCurves, even_odd=True))
+
+        self.assertEquals(
+            "***     **"
+            "**********"
+            "**********"
+            "**********"
+            "**     ***",
+            self.render(draw_qCurves, even_odd=False))
+
+    @staticmethod
+    def render(draw_function, even_odd):
+        result = StringIO()
+        for y in range(5):
+            for x in range(10):
+                pen = PointInsidePen(None, (x + 0.5, y + 0.5), even_odd)
+                draw_function(pen)
+                if pen.getResult():
+                    result.write(b"*")
+                else:
+                    result.write(b" ")
+        return tounicode(result.getvalue())
+
+
+if __name__ == "__main__":
+    unittest.main()
+