diff --git a/tests/test_clip.py b/tests/test_clip.py
index 92d08f3457..8eef333ea6 100644
--- a/tests/test_clip.py
+++ b/tests/test_clip.py
@@ -145,6 +145,11 @@ def test_available_image_bounds(self):
         self.assertEqual(16.0, cl.available_image_bounds.max.x)
         self.assertEqual(9.0, cl.available_image_bounds.max.y)
 
+        # test range exceptions
+        cl.media_reference.available_image_bounds = None
+        with self.assertRaises(otio.exceptions.CannotComputeAvailableRangeError):
+            cl.available_range()
+
     def test_ref_default(self):
         cl = otio.schema.Clip()
         self.assertIsOTIOEquivalentTo(
diff --git a/tests/test_effect.py b/tests/test_effect.py
index 5bf61ade2a..9e615695b4 100644
--- a/tests/test_effect.py
+++ b/tests/test_effect.py
@@ -62,8 +62,18 @@ def test_str(self):
             )
         )
 
+    def test_setters(self):
+        ef = otio.schema.Effect(
+            name="blur it",
+            effect_name="blur",
+            metadata={"foo": "bar"}
+        )
+        self.assertEqual(ef.effect_name, "blur")
+        ef.effect_name = "flop"
+        self.assertEqual(ef.effect_name, "flop")
+
 
-class TestLinearTimeWarp(unittest.TestCase):
+class TestLinearTimeWarp(unittest.TestCase, otio_test_utils.OTIOAssertions):
     def test_cons(self):
         ef = otio.schema.LinearTimeWarp("Foo", 2.5, {'foo': 'bar'})
         self.assertEqual(ef.effect_name, "LinearTimeWarp")
@@ -71,6 +81,18 @@ def test_cons(self):
         self.assertEqual(ef.time_scalar, 2.5)
         self.assertEqual(ef.metadata, {"foo": "bar"})
 
+    def test_serialize(self):
+        ef = otio.schema.LinearTimeWarp("Foo", 2.5, {'foo': 'bar'})
+        encoded = otio.adapters.otio_json.write_to_string(ef)
+        decoded = otio.adapters.otio_json.read_from_string(encoded)
+        self.assertIsOTIOEquivalentTo(ef, decoded)
+
+    def test_setters(self):
+        ef = otio.schema.LinearTimeWarp("Foo", 2.5, {'foo': 'bar'})
+        self.assertEqual(ef.time_scalar, 2.5)
+        ef.time_scalar = 5.0
+        self.assertEqual(ef.time_scalar, 5.0)
+
 
 class TestFreezeFrame(unittest.TestCase):
     def test_cons(self):
diff --git a/tests/test_item.py b/tests/test_item.py
index fbbf1b704a..8717f38922 100755
--- a/tests/test_item.py
+++ b/tests/test_item.py
@@ -235,6 +235,13 @@ def test_metadata(self):
         self.assertIsOTIOEquivalentTo(it, decoded)
         self.assertEqual(decoded.metadata["foo"], it.metadata["foo"])
 
+        foo = it.metadata.pop("foo")
+        self.assertEqual(foo, "bar")
+        foo = it.metadata.pop("foo", "default")
+        self.assertEqual(foo, "default")
+        with self.assertRaises(KeyError):
+            it.metadata.pop("foo")
+
     def test_add_effect(self):
         tr = otio.opentime.TimeRange(
             duration=otio.opentime.RationalTime(10, 1)
diff --git a/tests/test_transition.py b/tests/test_transition.py
index 1ce3f52158..fdf78c1c1a 100644
--- a/tests/test_transition.py
+++ b/tests/test_transition.py
@@ -74,6 +74,91 @@ def test_stringify(self):
             )
         )
 
+    def test_setters(self):
+        trx = otio.schema.Transition(
+            name="AtoB",
+            transition_type="SMPTE.Dissolve",
+            metadata={
+                "foo": "bar"
+            }
+        )
+        self.assertEqual(trx.transition_type, "SMPTE.Dissolve")
+        trx.transition_type = "EdgeWipe"
+        self.assertEqual(trx.transition_type, "EdgeWipe")
+
+    def test_parent_range(self):
+        timeline = otio.schema.Timeline(
+            tracks=[
+                otio.schema.Track(
+                    name="V1",
+                    children=[
+                        otio.schema.Clip(
+                            name="A",
+                            source_range=otio.opentime.TimeRange(
+                                start_time=otio.opentime.RationalTime(
+                                    value=1,
+                                    rate=30
+                                ),
+                                duration=otio.opentime.RationalTime(
+                                    value=50,
+                                    rate=30
+                                )
+                            )
+                        ),
+                        otio.schema.Transition(
+                            in_offset=otio.opentime.RationalTime(
+                                value=7,
+                                rate=30
+                            ),
+                            out_offset=otio.opentime.RationalTime(
+                                value=10,
+                                rate=30
+                            ),
+                        ),
+                        otio.schema.Clip(
+                            name="B",
+                            source_range=otio.opentime.TimeRange(
+                                start_time=otio.opentime.RationalTime(
+                                    value=100,
+                                    rate=30
+                                ),
+                                duration=otio.opentime.RationalTime(
+                                    value=50,
+                                    rate=30
+                                )
+                            )
+                        ),
+                    ]
+                )
+            ]
+        )
+        trx = timeline.tracks[0][1]
+        time_range = otio.opentime.TimeRange(otio.opentime.RationalTime(43, 30),
+                                             otio.opentime.RationalTime(17, 30))
+
+        self.assertEqual(time_range,
+                         trx.range_in_parent())
+
+        self.assertEqual(time_range,
+                         trx.trimmed_range_in_parent())
+
+        trx = otio.schema.Transition(
+            in_offset=otio.opentime.RationalTime(
+                value=7,
+                rate=30
+            ),
+            out_offset=otio.opentime.RationalTime(
+                value=10,
+                rate=30
+            ),
+        )
+
+        with self.assertRaises(otio.exceptions.NotAChildError):
+            trx.range_in_parent()
+
+        with self.assertRaises(otio.exceptions.NotAChildError):
+            trx.trimmed_range_in_parent()
+
 
 if __name__ == '__main__':
     unittest.main()