fun with Answers

gistfile1.java

  public static final String LESS_THAN_A_MINUTE = "less than a minute";
    public static final String SECONDS = "seconds";
    public static final String MINUTES = "minutes";
    public static final String HOURS = "hours";
    public static final String DAYS = "days";
    public static final String WEEKS = "weeks";
    public static final String MONTHS = "months";
    public static final String YEARS = "years";
    public static final String DECADES = "decades";
    public static final String CENTURIES = "centuries";
    public static final String MILLENNIA = "millennia";
    public static final String SPACE = " ";
    public static final String COMMA = ",";

    @Before
    public void init() {
        MockitoAnnotations.initMocks(this);

        when(mResourcesMock.getString(R.string.less_than_a_minute)).thenReturn(LESS_THAN_A_MINUTE);
        when(mResourcesMock.getQuantityString(eq(R.plurals.seconds), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(SECONDS));
        when(mResourcesMock.getQuantityString(eq(R.plurals.minute), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(MINUTES));
        when(mResourcesMock.getQuantityString(eq(R.plurals.hour), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(HOURS));
        when(mResourcesMock.getQuantityString(eq(R.plurals.day), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(DAYS));
        when(mResourcesMock.getQuantityString(eq(R.plurals.week), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(WEEKS));
        when(mResourcesMock.getQuantityString(eq(R.plurals.month), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(MONTHS));
        when(mResourcesMock.getQuantityString(eq(R.plurals.year), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(YEARS));
        when(mResourcesMock.getQuantityString(eq(R.plurals.decade), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(DECADES));
        when(mResourcesMock.getQuantityString(eq(R.plurals.century), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(CENTURIES));
        when(mResourcesMock.getQuantityString(eq(R.plurals.millennia), any(Integer.class), any(Integer.class))).thenAnswer(new TimeAnswer(MILLENNIA));

        timeAgo = new TimeAgo(mResourcesMock);
    }

    /**
     * Class to mimic string replacement of the getQuantity method for resources
     */
    private static class TimeAnswer implements Answer<String> {

        String mReturnType;

        public TimeAnswer(String returnType) {
            mReturnType = returnType;
        }

        @Override
        public String answer(InvocationOnMock invocation) throws Throwable {
            Object[] args = invocation.getArguments();

            int value = (int) args[2];
            return value + " " + mReturnType;
        }
    }