Quran_android: Write a unit test for AudioUtils

[ahmedre]

i introduced a crash a8f2b2d742026a542b8751a622252e584e6e72b6 that i fixed in 02c953d91b3dcae6a2bf6a808854d2d5921986be. a unit test would have easily caught this.

i think the steps here are:

1. change the class to a Singleton class
2. inject the context so we don't have to pass it along everywhere
3. add tests for some of these methods and document them

[hosainnet]

Happy to pick this up

[hosainnet]

@ahmedre when you say turn it into a Singleton, you mean via Dagger or just by plain Java?

Also I presume this involves turning static methods to instance methods?

[ahmedre]

either one - preferably dagger though.

so it'd look like:

@Singleton
public class AudioUtils {
    private final Context appContext;

    @Inject
    public AudioUtils(Context appContext) {
        this.appContext = appContext;
    }
}

and then when you want to use it (i.e. in PagerActivity for example), you'd just do

@Inject AudioUtils audioUtils;

since PagerActivity already deals with injection for you, you should be able to use it easily whenever you need it.