1 files changed, 32 insertions, 0 deletions
diff --git a/src/arrow/js/test/unit/utils-tests.ts b/src/arrow/js/test/unit/utils-tests.ts
new file mode 100644
index 000000000..985bec7aa
--- /dev/null
+++ b/src/arrow/js/test/unit/utils-tests.ts
@@ -0,0 +1,32 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { isTypedArray } from 'apache-arrow';
+
+describe('isTypedArray', () => {
+    test('works for typed arrays', () => {
+        expect(isTypedArray(new Int8Array())).toBeTruthy();
+        expect(isTypedArray(new Int32Array())).toBeTruthy();
+        expect(isTypedArray(new BigInt64Array())).toBeTruthy();
+    });
+
+    test('does not recognize arrays, buffers, or data views', () => {
+        expect(isTypedArray(new Array([1, 2, 3]))).toBeFalsy();
+        expect(isTypedArray(new ArrayBuffer(10))).toBeFalsy();
+        expect(isTypedArray(new DataView(new ArrayBuffer(10)))).toBeFalsy();
+    });
+});