このレッスンは、現在英語のみです。
Take control of the world
A daily bonus depends on today's date. A dice game depends on luck. A sign-up sends an email. To test them, swap the clock, the dice and the mailer for test doubles that you control.
このレッスンは、現在英語のみです。
A daily bonus depends on today's date. A dice game depends on luck. A sign-up sends an email. To test them, swap the clock, the dice and the mailer for test doubles that you control.