Support datetime. (#394)

test/test_timestamp.py

@@ -1,5 +1,11 @@
+import pytest
+import sys
+import datetime
 import msgpack
-from msgpack import Timestamp
+from msgpack.ext import Timestamp
+
+if sys.version_info[0] > 2:
+    from msgpack.ext import _utc
 
 
 def test_timestamp():
@@ -42,5 +48,43 @@ def test_timestamp():
 
 def test_timestamp_to():
     t = Timestamp(42, 14)
-    assert t.to_float_s() == 42.000000014
+    assert t.to_float() == 42.000000014
     assert t.to_unix_ns() == 42000000014
+
+
+@pytest.mark.skipif(sys.version_info[0] == 2, reason="datetime support is PY3+ only")
+def test_timestamp_datetime():
+    t = Timestamp(42, 14)
+    assert t.to_datetime() == datetime.datetime(1970, 1, 1, 0, 0, 42, 0, tzinfo=_utc)
+
+
+@pytest.mark.skipif(sys.version_info[0] == 2, reason="datetime support is PY3+ only")
+def test_unpack_datetime():
+    t = Timestamp(42, 14)
+    packed = msgpack.packb(t)
+    unpacked = msgpack.unpackb(packed, timestamp=3)
+    assert unpacked == datetime.datetime(1970, 1, 1, 0, 0, 42, 0, tzinfo=_utc)
+
+
+@pytest.mark.skipif(sys.version_info[0] == 2, reason="datetime support is PY3+ only")
+def test_pack_datetime():
+    t = Timestamp(42, 14000)
+    dt = t.to_datetime()
+    assert dt == datetime.datetime(1970, 1, 1, 0, 0, 42, 14, tzinfo=_utc)
+
+    packed = msgpack.packb(dt, datetime=True)
+    packed2 = msgpack.packb(t)
+    assert packed == packed2
+
+    unpacked = msgpack.unpackb(packed)
+    print(packed, unpacked)
+    assert unpacked == t
+
+    unpacked = msgpack.unpackb(packed, timestamp=3)
+    assert unpacked == dt
+
+    x = []
+    packed = msgpack.packb(dt, datetime=False, default=x.append)
+    assert x
+    assert x[0] == dt
+    assert msgpack.unpackb(packed) is None