Add trailing garbage testcase for LibBytes.equals

packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol

@@ -62,6 +62,17 @@ contract TestLibBytes {
         return equal;
     }
     
+    function publicEqualsPop1(bytes memory lhs, bytes memory rhs)
+        public
+        pure
+        returns (bool equal)
+    {
+        lhs.popByte();
+        rhs.popByte();
+        equal = lhs.equals(rhs);
+        return equal;
+    }
+
     /// @dev Performs a deep copy of a byte array onto another byte array of greater than or equal length.
     /// @param dest Byte array that will be overwritten with source bytes.
     /// @param source Byte array to copy onto dest bytes.

packages/contracts/test/libraries/lib_bytes.ts

@@ -172,6 +172,16 @@ describe('LibBytes', () => {
             );
             return expect(equals).to.be.false();
         });
+
+        describe('should ignore trailing data', () => {
+            it('should return true when both < 32 bytes', async () => {
+                const equals = await libBytes.publicEqualsPop1.callAsync(
+                    '0x0102',
+                    '0x0103',
+                );
+                return expect(equals).to.be.true();
+            });
+        });
     });
 
     describe('deepCopyBytes', () => {