1 files changed, 7 insertions, 1 deletions
diff --git a/packages/contracts/test/libraries/lib_bytes.ts b/packages/contracts/test/libraries/lib_bytes.ts
index fc28c363b..968bac300 100644
--- a/packages/contracts/test/libraries/lib_bytes.ts
+++ b/packages/contracts/test/libraries/lib_bytes.ts
@@ -250,8 +250,14 @@ describe('LibBytes', () => {
     */
 
     describe('readFirst4', () => {
+        it('should revert if byte array has a length < 4', async () => {
+            const byteArrayLessThan4Bytes = '0x010101';
+            return expect(libBytes.publicReadFirst4.callAsync(byteArrayLessThan4Bytes)).to.be.rejectedWith(
+                constants.REVERT,
+            );
+        });
         it('should return the first 4 bytes of a byte array of arbitrary length', async () => {
-            const first4Bytes = libBytes.publicReadFirst4.callAsync(byteArrayLongerThan32Bytes);
+            const first4Bytes = await libBytes.publicReadFirst4.callAsync(byteArrayLongerThan32Bytes);
             const expectedFirst4Bytes = byteArrayLongerThan32Bytes.slice(0, 10);
             expect(first4Bytes).to.equal(expectedFirst4Bytes);
         });