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Add test_slice() to streaming BasicOperations #22128

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Add test_slice() to streaming BasicOperations #22128

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16 changes: 16 additions & 0 deletions python/pyspark/streaming/tests.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
# limitations under the License.
#

import datetime as dt
import glob
import os
import sys
Expand Down Expand Up @@ -206,6 +207,21 @@ def func(dstream):
expected = [[len(x)] for x in input]
self._test_func(input, func, expected)

def test_slice(self):
"""Basic operation test for DStream.slice."""
eol_python2 = dt.datetime(2020, 1, 1)
five_secs = dt.timedelta(seconds=5)
input = [eol_python2 - five_secs, eol_python2]
def func(dstream):
return dstream.slice()
expected = [[dt.datetime(2019, 12, 31, 23, 55)],
[dt.datetime(2019, 12, 31, 23, 56)],
[dt.datetime(2019, 12, 31, 23, 57)],
[dt.datetime(2019, 12, 31, 23, 58)],
[dt.datetime(2019, 12, 31, 23, 59)],
[dt.datetime(2020, 1, 1)]]
self._test_func(input, func, expected)

def test_reduce(self):
"""Basic operation test for DStream.reduce."""
input = [range(1, 5), range(5, 9), range(9, 13)]
Expand Down