Bug fix: EDL transition cut event references A side

Author: mikemahony

opentimelineio/adapters/cmx_3600.py

@@ -629,7 +629,7 @@ def write_to_string(input_otio, rate=None, style='avid'):
             #                     |---------|
             #                         100
 
-            # Event line to represent this "shorted" A side
+            # Event line to represent this "shorter" A side
             a_side_line = EventLine(
                 kind=kind,
                 edit_number=edit_number,
@@ -680,7 +680,7 @@ def write_to_string(input_otio, rate=None, style='avid'):
                 edit_number=edit_number,
                 rate=edl_rate
             )
-            cut_line.reel = b_side_line.reel
+            cut_line.reel = a_side_line.reel
             cut_line.source_in = a_side_line.source_out
             cut_line.source_out = a_side_line.source_out
             cut_line.record_in = a_side_line.record_out

tests/test_cmx_3600_adapter.py

@@ -393,6 +393,7 @@ def test_nucoda_edl_write_with_transition(self):
         )
 
         cl = otio.schema.Clip(
+            metadata={'cmx_3600': {'reel': 'Reel1'}},
             source_range=otio.opentime.TimeRange(
                 start_time=otio.opentime.RationalTime(131.0, 24.0),
                 duration=otio.opentime.RationalTime(102.0, 24.0)
@@ -403,21 +404,20 @@ def test_nucoda_edl_write_with_transition(self):
             out_offset=otio.opentime.RationalTime(43.0, 24.0)
         )
         cl2 = otio.schema.Clip(
+            metadata={'cmx_3600': {'reel': 'Reel2'}},
             source_range=otio.opentime.TimeRange(
                 start_time=otio.opentime.RationalTime(280.0, 24.0),
                 duration=otio.opentime.RationalTime(143.0, 24.0)
             )
         )
         cl3 = otio.schema.Clip(
+            metadata={'cmx_3600': {'reel': 'Reel3'}},
             source_range=otio.opentime.TimeRange(
                 start_time=otio.opentime.RationalTime(0.0, 24.0),
                 duration=otio.opentime.RationalTime(24.0, 24.0)
             )
         )
-        tl.tracks[0].append(cl)
-        tl.tracks[0].append(trans)
-        tl.tracks[0].append(cl2)
-        tl.tracks[0].append(cl3)
+        tl.tracks[0].extend([cl, trans, cl2, cl3])
 
         result = otio.adapters.write_to_string(
             tl,