Python FileDataWriter示例

示例#1

文件： test_file_data_writer.py 项目： Paul92/DataSpecification

 def test_write_one_byte(self):
     self.writer = FileDataWriter('files_data_writer/txt_one_byte')
     self.writer.write(bytearray([0]))
     self.writer.close()
     with open('files_data_writer/txt_one_byte', "r") as file_handle:
         self.assertEqual(file_handle.read(1), '\x00')
         self.assertEqual(file_handle.read(1), '')

示例#2

文件： test_writing_file_then_reading_from_same_file.py 项目： Paul92/DataSpecification

 def test_read_from_empty_file(self):
     self.writer = FileDataWriter('data_files/txt_empty')
     self.writer.write(bytearray())
     self.writer.close()
     with open('data_files/txt_empty', "rb") as file_handle:
         self.assertEqual(file_handle.read(1), '')
     self.reader = FileDataReader('data_files/txt_empty')
     stream = self.reader.read(1)
     self.assertEqual(len(stream), 0)

示例#3

文件： test_writing_file_then_reading_from_same_file.py 项目： Paul92/DataSpecification

 def test_one_byte(self):
     self.writer = FileDataWriter('data_files/txt_one_byte')
     self.writer.write(bytearray([1]))
     self.writer.close()
     with open('data_files/txt_one_byte', "rb") as file_handle:
         self.assertEqual(file_handle.read(1), '\x01')
         self.assertEqual(file_handle.read(1), '')
     self.reader = FileDataReader('data_files/txt_one_byte')
     stream = self.reader.read(1)
     self.assertEqual(stream[0], 1)

示例#4

文件： test_file_data_writer.py 项目： Paul92/DataSpecification

 def test_write_five_bytes(self):
     self.writer = FileDataWriter('files_data_writer/txt_5_bytes')
     self.writer.write(bytearray([1, 2, 3, 4, 5]))
     self.writer.close()
     with open('files_data_writer/txt_5_bytes', "r") as file_handle:
         self.assertEqual(file_handle.read(1), '\x01')
         self.assertEqual(file_handle.read(1), '\x02')
         self.assertEqual(file_handle.read(1), '\x03')
         self.assertEqual(file_handle.read(1), '\x04')
         self.assertEqual(file_handle.read(1), '\x05')
         self.assertEqual(file_handle.read(1), '')

示例#5

文件： test_writing_file_then_reading_from_same_file.py 项目： Paul92/DataSpecification

 def test_readinto_one_byte(self):
     self.writer = FileDataWriter('data_files/txt_one_byte')
     self.writer.write(bytearray([5]))
     self.writer.close()
     with open('data_files/txt_one_byte', "rb") as file_handle:
         self.assertEqual(file_handle.read(1), '\x05')
         self.assertEqual(file_handle.read(1), '')
     self.reader = FileDataReader('data_files/txt_one_byte')
     ba = bytearray(1)
     self.reader.readinto(ba)
     self.assertEqual(len(ba), 1)
     self.assertEqual(ba[0], 5)

示例#6

文件： test_writing_file_then_reading_from_same_file.py 项目： Paul92/DataSpecification

 def test_read_truncate(self):
     self.writer = FileDataWriter(
         'data_files/txt_one_byte_from_multiple_bytes')
     self.writer.write(bytearray([0xF0, 0xA4, 0xAD, 0xA2]))
     self.writer.close()
     with open('data_files/txt_one_byte_from_multiple_bytes', "rb") \
             as file_handle:
         self.assertEqual(file_handle.read(1), '\xf0')
         self.assertEqual(file_handle.read(1), '\xA4')
         self.assertEqual(file_handle.read(1), '\xAD')
         self.assertEqual(file_handle.read(1), '\xA2')
         self.assertEqual(file_handle.read(1), '')
     self.reader = FileDataReader(
         'data_files/txt_one_byte_from_multiple_bytes')
     stream = self.reader.read(2)
     self.assertEqual(len(stream), 2)
     self.assertEqual(stream[0], 240)
     self.assertEqual(stream[1], 164)

示例#7

文件： test_writing_file_then_reading_from_same_file.py 项目： Paul92/DataSpecification

 def test_read_five_bytes(self):
     self.writer = FileDataWriter('data_files/txt_5_bytes')
     self.writer.write(bytearray([1, 2, 3, 4, 5]))
     self.writer.close()
     with open('data_files/txt_5_bytes', "rb") as file_handle:
         self.assertEqual(file_handle.read(1), '\x01')
         self.assertEqual(file_handle.read(1), '\x02')
         self.assertEqual(file_handle.read(1), '\x03')
         self.assertEqual(file_handle.read(1), '\x04')
         self.assertEqual(file_handle.read(1), '\x05')
         self.assertEqual(file_handle.read(1), '')
     self.reader = FileDataReader('data_files/txt_5_bytes')
     stream = self.reader.read(5)
     self.assertEqual(len(stream), 5)
     self.assertEqual(stream[0], 1)
     self.assertEqual(stream[1], 2)
     self.assertEqual(stream[2], 3)
     self.assertEqual(stream[3], 4)
     self.assertEqual(stream[4], 5)

示例#8

文件： test_file_data_writer.py 项目： Paul92/DataSpecification

class TestFileDataWriter(unittest.TestCase):
    def test_write_one_byte(self):
        self.writer = FileDataWriter('files_data_writer/txt_one_byte')
        self.writer.write(bytearray([0]))
        self.writer.close()
        with open('files_data_writer/txt_one_byte', "r") as file_handle:
            self.assertEqual(file_handle.read(1), '\x00')
            self.assertEqual(file_handle.read(1), '')

    def test_write_five_bytes(self):
        self.writer = FileDataWriter('files_data_writer/txt_5_bytes')
        self.writer.write(bytearray([1, 2, 3, 4, 5]))
        self.writer.close()
        with open('files_data_writer/txt_5_bytes', "r") as file_handle:
            self.assertEqual(file_handle.read(1), '\x01')
            self.assertEqual(file_handle.read(1), '\x02')
            self.assertEqual(file_handle.read(1), '\x03')
            self.assertEqual(file_handle.read(1), '\x04')
            self.assertEqual(file_handle.read(1), '\x05')
            self.assertEqual(file_handle.read(1), '')

    def test_write_from_empty_file(self):
        self.writer = FileDataWriter('files_data_writer/txt_empty')
        self.writer.write(bytearray())
        self.writer.close()
        with open('files_data_writer/txt_empty', "r") as file_handle:
            self.assertEqual(file_handle.read(1), '')

示例#9

文件： test_file_data_writer.py 项目： Paul92/DataSpecification

 def test_write_from_empty_file(self):
     self.writer = FileDataWriter('files_data_writer/txt_empty')
     self.writer.write(bytearray())
     self.writer.close()
     with open('files_data_writer/txt_empty', "r") as file_handle:
         self.assertEqual(file_handle.read(1), '')

示例#10

文件： test_writing_file_then_reading_from_same_file.py 项目： Paul92/DataSpecification

class MyTestCase(unittest.TestCase):
    def setUp(self):
        self.reader = None

    def tearDown(self):
        if self.reader is not None:
            self.reader.close()

    def test_one_byte(self):
        self.writer = FileDataWriter('data_files/txt_one_byte')
        self.writer.write(bytearray([1]))
        self.writer.close()
        with open('data_files/txt_one_byte', "rb") as file_handle:
            self.assertEqual(file_handle.read(1), '\x01')
            self.assertEqual(file_handle.read(1), '')
        self.reader = FileDataReader('data_files/txt_one_byte')
        stream = self.reader.read(1)
        self.assertEqual(stream[0], 1)

    def test_readinto_one_byte(self):
        self.writer = FileDataWriter('data_files/txt_one_byte')
        self.writer.write(bytearray([5]))
        self.writer.close()
        with open('data_files/txt_one_byte', "rb") as file_handle:
            self.assertEqual(file_handle.read(1), '\x05')
            self.assertEqual(file_handle.read(1), '')
        self.reader = FileDataReader('data_files/txt_one_byte')
        ba = bytearray(1)
        self.reader.readinto(ba)
        self.assertEqual(len(ba), 1)
        self.assertEqual(ba[0], 5)

    def test_read_five_bytes(self):
        self.writer = FileDataWriter('data_files/txt_5_bytes')
        self.writer.write(bytearray([1, 2, 3, 4, 5]))
        self.writer.close()
        with open('data_files/txt_5_bytes', "rb") as file_handle:
            self.assertEqual(file_handle.read(1), '\x01')
            self.assertEqual(file_handle.read(1), '\x02')
            self.assertEqual(file_handle.read(1), '\x03')
            self.assertEqual(file_handle.read(1), '\x04')
            self.assertEqual(file_handle.read(1), '\x05')
            self.assertEqual(file_handle.read(1), '')
        self.reader = FileDataReader('data_files/txt_5_bytes')
        stream = self.reader.read(5)
        self.assertEqual(len(stream), 5)
        self.assertEqual(stream[0], 1)
        self.assertEqual(stream[1], 2)
        self.assertEqual(stream[2], 3)
        self.assertEqual(stream[3], 4)
        self.assertEqual(stream[4], 5)

    def test_read_from_empty_file(self):
        self.writer = FileDataWriter('data_files/txt_empty')
        self.writer.write(bytearray())
        self.writer.close()
        with open('data_files/txt_empty', "rb") as file_handle:
            self.assertEqual(file_handle.read(1), '')
        self.reader = FileDataReader('data_files/txt_empty')
        stream = self.reader.read(1)
        self.assertEqual(len(stream), 0)

    def test_read_truncate(self):
        self.writer = FileDataWriter(
            'data_files/txt_one_byte_from_multiple_bytes')
        self.writer.write(bytearray([0xF0, 0xA4, 0xAD, 0xA2]))
        self.writer.close()
        with open('data_files/txt_one_byte_from_multiple_bytes', "rb") \
                as file_handle:
            self.assertEqual(file_handle.read(1), '\xf0')
            self.assertEqual(file_handle.read(1), '\xA4')
            self.assertEqual(file_handle.read(1), '\xAD')
            self.assertEqual(file_handle.read(1), '\xA2')
            self.assertEqual(file_handle.read(1), '')
        self.reader = FileDataReader(
            'data_files/txt_one_byte_from_multiple_bytes')
        stream = self.reader.read(2)
        self.assertEqual(len(stream), 2)
        self.assertEqual(stream[0], 240)
        self.assertEqual(stream[1], 164)