#!/usr/bin/python

# -*- coding : utf-8 -*-

import datetime

"""

Port of the Java example of "Setter Injection" in

"xUnit Test Patterns - Refactoring Test Code" by Gerard Meszaros

(ISBN-10: 0131495054, ISBN-13: 978-0131495050) accessible in outdated version on

http://xunitpatterns.com/Dependency%20Injection.html.

production code which is untestable:

class TimeDisplay(object):

    def __init__(self):

        self.time_provider = datetime.datetime

    def get_current_time_as_html_fragment(self):

        current_time = self.time_provider.now()

        current_time_as_html_fragment = "<span class=\"tinyBoldText\">{}</span>".format(current_time)

        return current_time_as_html_fragment

"""

class TimeDisplay(object):

    def __init__(self):

        pass

    def set_time_provider(self, time_provider):

        self.time_provider = time_provider

    def get_current_time_as_html_fragment(self):

        current_time = self.time_provider.now()

        current_time_as_html_fragment = "<span class=\"tinyBoldText\">{}</span>".format(current_time)

        return current_time_as_html_fragment

class ProductionCodeTimeProvider(object):

    """

    Production code version of the time provider (just a wrapper for formatting

    datetime for this example).

    """

    def now(self):

        current_time = datetime.datetime.now()

        current_time_formatted = "{}:{}".format(current_time.hour,

                                                current_time.minute)

        return current_time_formatted

class MidnightTimeProvider(object):

    """

    Class implemented as hard-coded stub (in contrast to configurable stub).

    """

    def now(self):

        current_time_is_always_midnight = "24:01"

        return current_time_is_always_midnight