pitrou commented on code in PR #13144:
URL: https://github.com/apache/arrow/pull/13144#discussion_r876055701
##########
python/pyarrow/tests/test_io.py:
##########
@@ -125,6 +125,22 @@ def test_python_file_read():
pa.PythonFile(StringIO(), mode='r')
+def test_python_file_get_stream():
+ data = b'data1data2data3data4data5'
+
+ buf = BytesIO(data)
+ f = pa.PythonFile(buf, mode='r')
+
+ stream1 = f.get_stream(file_offset=0, nbytes=10)
+ stream2 = f.get_stream(file_offset=9, nbytes=16)
+
+ buf_nbytes6 = stream1.read(nbytes=6)
+ assert buf_nbytes6 == b'data1d'
Review Comment:
Probably want to exercise this a bit more. When it the end of file reached?
##########
python/pyarrow/tests/test_io.py:
##########
@@ -125,6 +125,22 @@ def test_python_file_read():
pa.PythonFile(StringIO(), mode='r')
+def test_python_file_get_stream():
+ data = b'data1data2data3data4data5'
+
+ buf = BytesIO(data)
+ f = pa.PythonFile(buf, mode='r')
+
+ stream1 = f.get_stream(file_offset=0, nbytes=10)
+ stream2 = f.get_stream(file_offset=9, nbytes=16)
+
+ buf_nbytes6 = stream1.read(nbytes=6)
+ assert buf_nbytes6 == b'data1d'
Review Comment:
Probably want to exercise this a bit more. When is the end of file reached?
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