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84 lines
1.6 KiB
Python
84 lines
1.6 KiB
Python
from io import BytesIO
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def test_01():
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bytes_string = b"Test String 1"
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f = BytesIO()
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f.write(bytes_string)
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assert f.tell() == len(bytes_string)
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assert f.getvalue() == bytes_string
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def test_02():
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bytes_string = b"Test String 2"
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f = BytesIO(bytes_string)
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assert f.read() == bytes_string
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assert f.read() == b""
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def test_03():
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"""
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Tests that the read method (integer arg)
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returns the expected value
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"""
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string = b"Test String 3"
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f = BytesIO(string)
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assert f.read(1) == b"T"
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assert f.read(1) == b"e"
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assert f.read(1) == b"s"
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assert f.read(1) == b"t"
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def test_04():
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"""
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Tests that the read method increments the
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cursor position and the seek method moves
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the cursor to the appropriate position
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"""
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string = b"Test String 4"
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f = BytesIO(string)
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assert f.read(4) == b"Test"
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assert f.tell() == 4
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assert f.seek(0) == 0
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assert f.read(4) == b"Test"
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def test_05():
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"""
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Tests that the write method accepts bytearray
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"""
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bytes_string = b"Test String 5"
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f = BytesIO()
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f.write(bytearray(bytes_string))
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assert f.getvalue() == bytes_string
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def test_06():
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"""
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Tests readline
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"""
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bytes_string = b"Test String 6\nnew line is here\nfinished"
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f = BytesIO(bytes_string)
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assert f.readline() == b"Test String 6\n"
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assert f.readline() == b"new line is here\n"
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assert f.readline() == b"finished"
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assert f.readline() == b""
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if __name__ == "__main__":
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test_01()
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test_02()
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test_03()
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test_04()
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test_05()
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test_06()
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