def test_none_read():
class NoneReader(object):
def read(self, size=None):
return None
stream = StreamSlice(NoneReader(), 0)
assert stream.read(-1) == None
assert stream.tell() == 0
def test_slice_explictread():
fileobj = StringIO('this is a cool test')
stream = StreamSlice(fileobj, 5, 9)
assert stream.read(2) == 'is'
assert stream.read(5) == ' a'
assert len('is a') == stream.tell()
def test_startindex_limitedread():
fileobj = StringIO('this is a cool test')
stream = StreamSlice(fileobj, 5)
assert stream.read(4) == 'is a'
assert 4 == stream.tell()
def test_startindex():
fileobj = StringIO('this is a cool test')
stream = StreamSlice(fileobj, 5)
assert stream.read(-1) == 'is a cool test'
assert len('is a cool test') == stream.tell()
def test_noslice():
fileobj = StringIO('this is a cool test')
stream = StreamSlice(fileobj, 0)
assert stream.read(-1) == 'this is a cool test'
assert len('this is a cool test') == stream.tell()
def test_startindex_limitedread():
fileobj = BytesIO(b"this is a cool test")
stream = StreamSlice(fileobj, 5)
assert stream.read(4) == b"is a"
assert 4 == stream.tell()
def test_slice_explictread():
fileobj = BytesIO(b"this is a cool test")
stream = StreamSlice(fileobj, 5, 9)
assert stream.read(2) == b"is"
assert stream.read(5) == b" a"
assert len(b"is a") == stream.tell()
def test_startindex():
fileobj = BytesIO(b"this is a cool test")
stream = StreamSlice(fileobj, 5)
assert stream.read(-1) == b"is a cool test"
assert len(b"is a cool test") == stream.tell()
def test_noslice():
fileobj = BytesIO(b"this is a cool test")
stream = StreamSlice(fileobj, 0)
assert stream.read(-1) == b"this is a cool test"
assert len(b"this is a cool test") == stream.tell()
def test_slice_explictread():
fileobj = StringIO("this is a cool test")
stream = StreamSlice(fileobj, 5, 9)
assert stream.read(2) == "is"
assert stream.read(5) == " a"
assert len("is a") == stream.tell()
def test_startindex():
fileobj = StringIO("this is a cool test")
stream = StreamSlice(fileobj, 5)
assert stream.read(-1) == "is a cool test"
assert len("is a cool test") == stream.tell()
def test_noslice():
fileobj = StringIO("this is a cool test")
stream = StreamSlice(fileobj, 0)
assert stream.read(-1) == "this is a cool test"
assert len("this is a cool test") == stream.tell()