Update docs

test/proxy/Clones.test.js

@@ -1,4 +1,6 @@
 const { expectEvent, expectRevert } = require('@openzeppelin/test-helpers');
+const { computeCreate2Address } = require('../helpers/create2');
+const { expect } = require('chai');
 
 const shouldBehaveLikeClone = require('./Clones.behaviour');
 
@@ -44,6 +46,19 @@ contract('Clones', function (accounts) {
       const salt = web3.utils.randomHex(32);
       const factory = await ClonesMock.new();
       const predicted = await factory.predictDeterministicAddress(implementation, salt);
+
+      const creationCode = [
+        '0x3d602d80600a3d3981f3363d3d373d3d3d363d73',
+        implementation.replace(/0x/, '').toLowerCase(),
+        '5af43d82803e903d91602b57fd5bf3',
+      ].join('');
+
+      expect(computeCreate2Address(
+        salt,
+        creationCode,
+        factory.address,
+      )).to.be.equal(predicted);
+
       expectEvent(
         await factory.cloneDeterministic(implementation, salt, '0x'),
         'NewInstance',