Fix coverage

src/lib/bin/secp256k1/secp256k1-wasm.spec.ts

@@ -499,6 +499,28 @@ test('[crypto] getEmbeddedSecp256k1Binary returns the proper binary', async (t)
     await streamWasmArrayBuffer(binary)
   ).arrayBuffer();
   t.deepEqual(eventuallyDecompressedBinary, binaryFromDisk);
+
+  // compress the wasm binary
+  const stream = new ReadableStream({
+    start(controller): void {
+      controller.enqueue(new Uint8Array(binaryFromDisk));
+      controller.close();
+    },
+  }).pipeThrough(new CompressionStream('gzip'));
+
+  const compressedBinary = await new Response(stream).arrayBuffer();
+
+  // decompress the compressed wasm binary
+  const decompressedBinary = await (
+    await streamWasmArrayBuffer(compressedBinary)
+  ).arrayBuffer();
+  t.deepEqual(decompressedBinary, binaryFromDisk);
+
+  // check that the uncompressed binary produced by `streamWasmArrayBuffer` is the same as the binary from disk
+  const uncompressedBinary = await (
+    await streamWasmArrayBuffer(binaryFromDisk)
+  ).arrayBuffer();
+  t.deepEqual(uncompressedBinary, binaryFromDisk);
 });
 
 test('[crypto] Secp256k1Wasm instantiated with embedded binary', async (t) => {