private void setUpCacheEnabled(boolean enabled) {
    when(mImageRequest.isCacheEnabled(ImageRequest.CachesLocationsMasks.ENCODED_READ))
        .thenReturn(enabled);
    when(mImageRequest.isCacheEnabled(ImageRequest.CachesLocationsMasks.ENCODED_WRITE))
        .thenReturn(enabled);
  }
Checks basic properties of encoded memory cache producer operation, that is: - it delegates to
the {@link MemoryCache#get(Object)} - if {@link MemoryCache#get(Object)} is unsuccessful, then it
passes the request to the next producer in the sequence. - if the next producer returns the
value, then it is put into the disk cache. - responses from the next producer are passed back
down to the consumer.
imagepipeline/src/test/java/com/facebook/imagepipeline/producers/EncodedMemoryCacheProducerTest.java