### Question:
BlobModule extends ReactContextBaseJavaModule { @ReactMethod public void release(String blobId) { remove(blobId); } BlobModule(ReactApplicationContext reactContext); @Override String getName(); @Override @Nullable Map<String, Object> getConstants(); String store(byte[] data); void store(byte[] data, String blobId); void remove(String blobId); @Nullable byte[] resolve(Uri uri); @Nullable byte[] resolve(String blobId, int offset, int size); @Nullable byte[] resolve(ReadableMap blob); @ReactMethod void addNetworkingHandler(); @ReactMethod void addWebSocketHandler(final int id); @ReactMethod void removeWebSocketHandler(final int id); @ReactMethod void sendOverSocket(ReadableMap blob, int id); @ReactMethod void createFromParts(ReadableArray parts, String blobId); @ReactMethod void release(String blobId);  }### Answer:
@Test public void testRelease() { assertNotNull(mBlobModule.resolve(mBlobId, 0, mBytes.length)); mBlobModule.release(mBlobId); assertNull(mBlobModule.resolve(mBlobId, 0, mBytes.length)); }