### Question:
ConfigValueMapStringView extends AbstractMap<String, ConfigValue> { @Override public int size() { return delegate.size(); } ConfigValueMapStringView(final Map<String, String> delegate, final String configSourceName,
            final int configSourceOrdinal); @Override int size(); @Override boolean isEmpty(); @Override boolean containsKey(final Object key); @Override boolean containsValue(final Object value); @Override ConfigValue get(final Object key); @Override Set<String> keySet(); @Override Set<Map.Entry<String, ConfigValue>> entrySet(); @Override Collection<ConfigValue> values();  }### Answer:
@Test public void size() { assertEquals(2, sampleMap().size()); }