t.Fatal(err)
		}

		// Fetch docker image with digest
		d, err := img.Digest()
		if err != nil {
			t.Fatal(err)
		}

		// Fetch OCI image.
		binaryFetcher, actualDiget, err := fetcher.PrepareFetch(ref)
		if err != nil {
			t.Fatal(err)
		}
		actual, err := binaryFetcher()
		if err != nil {
			t.Fatal(err)
		}
		if string(actual) != exp {

	}
}

// PrepareFetch is the entrypoint for fetching Wasm binary from Wasm Image Specification compatible images.
// Wasm binary is not fetched immediately, but returned by `binaryFetcher` function, which is returned by PrepareFetch.
// By this way, we can have another chance to check cache with `actualDigest` without downloading the OCI image.

		}
		wasmLog.Debugf("fetching oci image from %s with options: %v", key.downloadURL, imgFetcherOps)
		fetcher := NewImageFetcher(ctx, imgFetcherOps)
		binaryFetcher, dChecksum, err = fetcher.PrepareFetch(u.Host + u.Path)
		if err != nil {
			wasmRemoteFetchCount.With(resultTag.Value(manifestFailure)).Increment()
			return nil, fmt.Errorf("could not fetch Wasm OCI image: %v", err)
		}
	default: