Add missing declarations to datetime.pxd (GH-4128)

tests/run/datetime_cimport.pyx

 # coding: utf-8
 
 from cpython.datetime cimport import_datetime
-from cpython.datetime cimport date, time, datetime, timedelta, PyDateTime_IMPORT
+from cpython.datetime cimport date, time, datetime, timedelta, timezone_new, PyDateTime_IMPORT
+
+import sys
 
 import_datetime()
-        
+
 def test_date(int year, int month, int day):
     '''
     >>> val = test_date(2012, 12, 31)
@@ -40,3 +42,20 @@ def test_timedelta(int days, int seconds, int useconds):
     '''
     val = timedelta(days, seconds, useconds)
     return val
+
+def test_timezone(int days, int seconds, int useconds, str name):
+    '''
+    >>> val = test_timezone(0, 3600, 0, 'CET')
+    >>> print(val)
+    True
+    '''
+    try:
+        val = timezone_new(timedelta(days, seconds, useconds), name)
+    except RuntimeError:
+        if sys.version_info < (3, 7):
+            return True
+        else:
+            # It's only supposed to raise on Python < 3.7
+            return False
+    else:
+        return True

tests/run/datetime_members.pyx

+# mode: run
+# tag: datetime
+
+import sys
+
 from cpython.datetime cimport import_datetime
 from cpython.datetime cimport time_new, date_new, datetime_new, timedelta_new
+from cpython.datetime cimport datetime, time
 from cpython.datetime cimport time_tzinfo, datetime_tzinfo
-from cpython.datetime cimport time_hour, time_minute, time_second, time_microsecond
+from cpython.datetime cimport time_hour, time_minute, time_second, time_microsecond, time_fold
 from cpython.datetime cimport date_day, date_month, date_year
 from cpython.datetime cimport datetime_day, datetime_month, datetime_year
 from cpython.datetime cimport datetime_hour, datetime_minute, datetime_second, \
-                              datetime_microsecond
+                              datetime_microsecond, datetime_fold
 from cpython.datetime cimport timedelta_days, timedelta_seconds, timedelta_microseconds
 
 import_datetime()
@@ -20,31 +26,39 @@ def test_date(int year, int month, int day):
            o.month == date_month(o), \
            o.day == date_day(o)
 
-def test_datetime(int year, int month, int day, 
-                  int hour, int minute, int second, int microsecond):
+def test_datetime(int year, int month, int day, int hour,
+                  int minute, int second, int microsecond, int fold):
     '''
-    >>> test_datetime(2012, 12, 31, 12, 30, 59, 12345)
-    (True, True, True, True, True, True, True)
+    >>> test_datetime(2012, 12, 31, 12, 30, 59, 12345, 0)
+    (True, True, True, True, True, True, True, True)
+    >>> test_datetime(2012, 12, 11, 12, 30, 59, 3322, 1 if sys.version_info >= (3, 7) else 0)
+    (True, True, True, True, True, True, True, True)
     '''
-    o = datetime_new(year, month, day, hour, minute, second, microsecond, None)
+    o = datetime_new(
+        year, month, day, hour, minute, second, microsecond, None, fold
+    )
     return o.year == datetime_year(o), \
            o.month == datetime_month(o), \
            o.day == datetime_day(o), \
            o.hour == datetime_hour(o), \
            o.minute == datetime_minute(o), \
            o.second == datetime_second(o), \
-           o.microsecond == datetime_microsecond(o)
+           o.microsecond == datetime_microsecond(o), \
+           o.fold == datetime_fold(o)
 
-def test_time(int hour, int minute, int second, int microsecond):
+def test_time(int hour, int minute, int second, int microsecond, int fold):
     '''
-    >>> test_time(12, 30, 59, 12345)
-    (True, True, True, True)
+    >>> test_time(12, 30, 59, 12345, 0)
+    (True, True, True, True, True)
+    >>> test_time(12, 30, 43, 5432, 1 if sys.version_info >= (3, 7) else 0)
+    (True, True, True, True, True)
     '''
-    o = time_new(hour, minute, second, microsecond, None)
+    o = time_new(hour, minute, second, microsecond, None, fold)
     return o.hour == time_hour(o), \
            o.minute == time_minute(o), \
            o.second == time_second(o), \
-           o.microsecond == time_microsecond(o)
+           o.microsecond == time_microsecond(o), \
+           o.fold == time_fold(o)
 
 def test_timedelta(int days, int seconds, int microseconds):
     '''
@@ -55,4 +69,3 @@ def test_timedelta(int days, int seconds, int microseconds):
     return o.days == timedelta_days(o), \
            o.seconds == timedelta_seconds(o), \
            o.microseconds == timedelta_microseconds(o)
-

tests/run/datetime_pxd.pyx

@@ -11,8 +11,9 @@ from cpython.datetime cimport datetime_day, datetime_month, datetime_year
 from cpython.datetime cimport datetime_hour, datetime_minute, datetime_second, \
                               datetime_microsecond
 from cpython.datetime cimport datetime, total_seconds
+from cpython.datetime cimport date_from_timestamp, get_utc, datetime_from_timestamp
 
-# These were added in Py3, make sure that their backport works.
+# These were added in Python 2.7.5, make sure that their backport works.
 from cpython.datetime cimport (
     timedelta as timedelta_ext_type,
     PyDateTime_DELTA_GET_DAYS,
@@ -21,6 +22,8 @@ from cpython.datetime cimport (
 )
 
 import datetime as py_datetime
+import time as py_time
+import sys
 
 import_datetime()
 
@@ -238,3 +241,39 @@ def test_datetime_attrs_inlined(datetime dt):
         dt.second,
         dt.microsecond,
     )
+
+def test_date_from_timestamp():
+    """
+    >>> from datetime import datetime
+    >>> tp, dt = test_date_from_timestamp()
+    >>> tp == dt
+    True
+    """
+    tp = date_from_timestamp(1518185542)
+    dt = py_datetime.date(2018, 2, 9)
+    return tp, dt
+
+def test_get_utc():
+    """
+    >>> from datetime import datetime
+    >>> test_get_utc()
+    True
+    """
+    try:
+        get_utc()
+    except RuntimeError:
+        if sys.version_info >= (3, 7):
+            raise  # get_utc() is only supposed to raise on Python < 3.7
+    return True
+
+def test_datetime_from_timestamp():
+    """
+    >>> from datetime import datetime
+    >>> tp, dt = test_datetime_from_timestamp()
+    >>> tp == dt
+    True
+    """
+    time = py_time.time()
+    tp = datetime_from_timestamp(time)
+    dt = py_datetime.datetime.fromtimestamp(time)
+    return tp, dt