[recordingPen_test] test recording component references as well as decomposed paths

Tests/pens/recordingPen_test.py

@@ -0,0 +1,39 @@
+from __future__ import print_function, division, absolute_import
+from fontTools.misc.py23 import *
+from fontTools.pens.recordingPen import RecordingPen, DecomposingRecordingPen
+import pytest
+
+
+class _TestGlyph(object):
+
+    def draw(self, pen):
+        pen.moveTo((0.0, 0.0))
+        pen.lineTo((0.0, 100.0))
+        pen.curveTo((50.0, 75.0), (60.0, 50.0), (50.0, 0.0))
+        pen.closePath()
+
+
+class RecordingPenTest(object):
+
+    def test_addComponent(self):
+        pen = RecordingPen()
+        pen.addComponent("a", (2, 0, 0, 3, -10, 5))
+        assert pen.value == [("addComponent", ("a", (2, 0, 0, 3, -10, 5)))]
+
+
+class DecomposingRecordingPenTest(object):
+
+    def test_addComponent_decomposed(self):
+        pen = DecomposingRecordingPen({"a": _TestGlyph()})
+        pen.addComponent("a", (2, 0, 0, 3, -10, 5))
+        assert pen.value == [
+            ('moveTo', ((-10.0, 5.0),)),
+            ('lineTo', ((-10.0, 305.0),)),
+            ('curveTo', ((90.0, 230.0), (110.0, 155.0), (90.0, 5.0),)),
+            ('closePath', ())]
+
+    def test_addComponent_missing_raises(self):
+        pen = DecomposingRecordingPen(dict())
+        with pytest.raises(KeyError) as excinfo:
+            pen.addComponent("a", (1, 0, 0, 1, 0, 0))
+        assert excinfo.value.args[0] == "a"