def test_read_non_existing_file(self):
        """Tests if the user is attempting to read content from non-existent
        file
        """

        test_user = CommandHandler()
        test_user.register("test11", "hgrsbbgvngevlohbgvp0")
        test_user.login("test11", "hgrsbbgvngevlohbgvp0")
        filename = "abc.txt"
        test_user.read_file(filename)
        expected = "\nNo Such file " + filename + " exists!"
        actual = test_user.read_file(filename)
    def test_read_file(self):
        """Tests if the user is attempting to read content from already 
        existing file
        """

        test_user = CommandHandler()
        test_user.register("test10", "brsgvegveiotyq39ty")
        test_user.login("test10", "brsgvegveiotyq39ty")
        test_user.write_file("z.txt", "Hello World!n")
        expected = "\nReading file from 0 bytes to 100 bytes\nHello World!n"
        actual = test_user.read_file("z.txt")
        self.assertEqual(expected, actual)
        test_user.quit()