@Before
  public void setup() {
    mDrawable = mock(Drawable.class);
    mBounds.set(0, 0, mDrawableWidth, mDrawableHeight);
    mFontMetrics.ascent = mFontAscent;
    mFontMetrics.descent = mFontDescent;
    mFontMetrics.top = mFontTop;
    mFontMetrics.bottom = mFontBottom;
    when(mDrawable.getBounds()).thenReturn(mBounds);
  }
Tests the dimensions assigned by {@link BetterImageSpan} ensuring the width/height of is
calculated correctly for different combinations of image and text height, as well as span
alignment.
fbcore/src/test/java/com/facebook/widget/text/span/BetterImageSpanTest.java