Merge branch 'development' of github.com:0xProject/0x.js into development

* 'development' of github.com:0xProject/0x.js: (24 commits)
  Rename variables
  Update CHANGELOG
  Add npm config for contracts list
  Run prettier
  Fix checks, add contract list to compile script in package.json
  Add contracts to compiler options
  Add missing public types from connect docs
  Change imports order
  Change default page params in connect to page 1 and perPage 100
  Add docs staging to 0x.js package
  Fix a typo
  Add an assertion
  Add PR numbers
  Fix entry points
  Add tests for dev-utils package
  Move subproviders from dev-utils to subproviders
  Add missing CHANGELOG entry
  Add support for intersection types in docs
  Add stagedocs script to connect package
  web3 typings fix - web3.net.peerCount returns number
  ...

1 files changed, 27 insertions, 0 deletions

diff --git a/packages/dev-utils/test/blockchain_lifecycle_test.ts b/packages/dev-utils/test/blockchain_lifecycle_test.ts
new file mode 100644
index 000000000..4fdc53c87
--- /dev/null
+++ b/packages/dev-utils/test/blockchain_lifecycle_test.ts
@@ -0,0 +1,27 @@
+import { BlockParamLiteral } from '@0xproject/types';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as chai from 'chai';
+import 'mocha';
+
+import { BlockchainLifecycle, RPC, web3Factory } from '../src';
+
+const expect = chai.expect;
+
+describe('BlockchainLifecycle tests', () => {
+    const web3 = web3Factory.create();
+    const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+    const rpc = new RPC();
+    const blockchainLifecycle = new BlockchainLifecycle();
+    describe('#startAsync/revertAsync', () => {
+        it('reverts changes in between', async () => {
+            const blockNumberBefore = await web3Wrapper.getBlockNumberAsync();
+            await blockchainLifecycle.startAsync();
+            await rpc.mineBlockAsync();
+            const blockNumberAfter = await web3Wrapper.getBlockNumberAsync();
+            expect(blockNumberAfter).to.be.equal(blockNumberBefore + 1);
+            await blockchainLifecycle.revertAsync();
+            const blockNumberAfterRevert = await web3Wrapper.getBlockNumberAsync();
+            expect(blockNumberAfterRevert).to.be.equal(blockNumberBefore);
+        });
+    });
+});