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-rw-r--r--test/0x.js_test.ts23
-rw-r--r--test/utils/web3_factory.ts10
2 files changed, 30 insertions, 3 deletions
diff --git a/test/0x.js_test.ts b/test/0x.js_test.ts
index c45c70991..1e76ae71a 100644
--- a/test/0x.js_test.ts
+++ b/test/0x.js_test.ts
@@ -4,6 +4,7 @@ import 'mocha';
import * as BigNumber from 'bignumber.js';
import ChaiBigNumber = require('chai-bignumber');
import * as Sinon from 'sinon';
+import ProviderEngine = require('web3-provider-engine');
import {ZeroEx} from '../src/0x.js';
import {constants} from './utils/constants';
import {web3Factory} from './utils/web3_factory';
@@ -13,6 +14,28 @@ chai.use(ChaiBigNumber());
const expect = chai.expect;
describe('ZeroEx library', () => {
+ describe('#setProvider', () => {
+ it('overrides the provider in the nested web3 instance and invalidates contractInstances', async () => {
+ const web3 = web3Factory.create();
+ const zeroEx = new ZeroEx(web3);
+ // Instantiate the exchangeContract instance with the current provider
+ await (zeroEx.exchange as any).instantiateExchangeContractIfDoesntExistAsync();
+
+ const newProvider = web3Factory.getRpcProvider();
+ // Add property to newProvider so that we can differentiate it from old provider
+ (newProvider as any).zeroExTestId = 1;
+ zeroEx.setProvider(newProvider);
+
+ // Check that exchangeContract instance removed after provider update
+ expect((zeroEx.exchange as any).exchangeContractIfExists).to.be.an('undefined');
+
+ // Check that all nested web3 instances return the updated provider
+ const nestedWeb3WrapperProvider = (zeroEx as any).web3Wrapper.getCurrentProvider();
+ expect((nestedWeb3WrapperProvider as any).zeroExTestId).to.be.a('number');
+ const contractWrapperWeb3WrapperProvider = zeroEx.exchange.web3Wrapper.getCurrentProvider();
+ expect((nestedWeb3WrapperProvider as any).zeroExTestId).to.be.a('number');
+ });
+ });
describe('#getOrderHash', () => {
const expectedOrderHash = '0x103a5e97dab5dbeb8f385636f86a7d1e458a7ccbe1bd194727f0b2f85ab116c7';
it('defaults takerAddress to NULL address', () => {
diff --git a/test/utils/web3_factory.ts b/test/utils/web3_factory.ts
index 493fbc2df..ffdc0e4cf 100644
--- a/test/utils/web3_factory.ts
+++ b/test/utils/web3_factory.ts
@@ -10,14 +10,18 @@ import {constants} from './constants';
export const web3Factory = {
create(): Web3 {
+ const provider = this.getRpcProvider();
+ const web3 = new Web3();
+ web3.setProvider(provider);
+ return web3;
+ },
+ getRpcProvider(): Web3.Provider {
const provider = new ProviderEngine();
const rpcUrl = `http://${constants.RPC_HOST}:${constants.RPC_PORT}`;
provider.addProvider(new RpcSubprovider({
rpcUrl,
}));
provider.start();
- const web3 = new Web3();
- web3.setProvider(provider);
- return web3;
+ return provider;
},
};