s011208 / gol

Game of Life

Description

Simple demo of Game of Life

Download

git clone [email protected]:yenhsun/Gol.git

Idea

MVP-like structure

In this code assignment, I choose MVP-like, such as draft above, as structure with dagger2.

• View deals with most of Android platform related jobs such as clicking events and updating view state.
• Presenter handles all of interactions between models/controllers & view. Besides, it also keeps almost all of states of businesss logic.

Testing

Under this MVP-like structure, testing can be easily because of following reasons:

• Presenter observe all of intents from android framework and most of actions in presenter are triggered by intents. As a result, it is easy to test presenter by sending intents manually.
• Most of updates in View are in it function View.render(State) and we only need to pass specific State to View.render(State) when testing.
• It is easy to extract/set objects in View or Presenter when testing by using DI or service locator (Dagger2 in this case).
• Using Mock framework (mockk in this case), we can verify the input & ouput of test cases.

Others

In case of blocking any UI manipulations, I decided to use HandlerThread to send all commands, from presenter, to GameRunner, the main GOL calculator and both are running on the distinct background threads.

Containing 7s

Description

Let g(N) be the count of numbers that contain a 7 when you write out all the numbers from 1 to N