diff --git a/src/core/operations/AvroToJSON.mjs b/src/core/operations/AvroToJSON.mjs
index 497a3872b7..585bd872a3 100644
--- a/src/core/operations/AvroToJSON.mjs
+++ b/src/core/operations/AvroToJSON.mjs
@@ -39,7 +39,7 @@ class AvroToJSON extends Operation {
      * @param {Object[]} args
      * @returns {string}
      */
-    run(input, args) {
+    async run(input, args) {
         if (input.byteLength <= 0) {
             throw new OperationError("Please provide an input.");
         }
diff --git a/src/core/operations/Bzip2Compress.mjs b/src/core/operations/Bzip2Compress.mjs
index 45dbfae64e..b5105e9813 100644
--- a/src/core/operations/Bzip2Compress.mjs
+++ b/src/core/operations/Bzip2Compress.mjs
@@ -47,7 +47,7 @@ class Bzip2Compress extends Operation {
      * @param {Object[]} args
      * @returns {File}
      */
-    run(input, args) {
+    async run(input, args) {
         const [blockSize, workFactor] = args;
         if (input.byteLength <= 0) {
             throw new OperationError("Please provide an input.");
diff --git a/tests/node/tests/operations.mjs b/tests/node/tests/operations.mjs
index 0046574c8f..c6f0e44fa0 100644
--- a/tests/node/tests/operations.mjs
+++ b/tests/node/tests/operations.mjs
@@ -264,6 +264,18 @@ Full hash: $2a$10$ODeP1.6fMsb.ENk2ngPUCO7qTGVPyHA9TqDVcyupyed8FjsiF65L6`;
         assert.strictEqual(result.toString(), "Fit as a Fiddle");
     }),
 
+    it("Bzip2 Compress: round-trips through the Node API", async () => {
+        const compressed = await chef.bzip2Compress("The quick brown fox.");
+        const result = await chef.bzip2Decompress(compressed);
+        assert.strictEqual(result.toString(), "The quick brown fox.");
+    }),
+
+    it("Avro to JSON: decodes an object container file through the Node API", async () => {
+        const avro = chef.fromHex("4f626a0104166176726f2e736368656d6196017b2274797065223a227265636f7264222c226e616d65223a22736d616c6c222c226669656c6473223a5b7b226e616d65223a226e616d65222c2274797065223a22737472696e67227d5d7d146176726f2e636f646563086e756c6c004e0247632e3702e5b75cdab9a62f1541020e0c6d796e616d654e0247632e3702e5b75cdab9a62f1541");
+        const result = await chef.avroToJSON(avro);
+        assert.strictEqual(result.toString(), "{\n    \"name\": \"myname\"\n}");
+    }),
+
     it("cartesianProduct: binary string", () => {
         const result = cartesianProduct("1:2\\n\\n3:4", {
             itemDelimiter: ":",