Refactor integrations directory structure; move core.ts, balance stores, and FillOrderWrapper to integrations

contracts/integrations/test/fuzz_tests/stake_management_test.ts

@@ -0,0 +1,53 @@
+import { blockchainTests } from '@0x/contracts-test-utils';
+import * as _ from 'lodash';
+
+import { Staker } from '../framework/actors/staker';
+import { AssertionResult } from '../framework/assertions/function_assertion';
+import { BlockchainBalanceStore } from '../framework/balances/blockchain_balance_store';
+import { DeploymentManager } from '../framework/deployment_manager';
+import { Simulation, SimulationEnvironment } from '../framework/simulation';
+
+import { PoolManagementSimulation } from './pool_management_test';
+
+export class StakeManagementSimulation extends Simulation {
+    protected async *_assertionGenerator(): AsyncIterableIterator<AssertionResult | void> {
+        const { deployment, balanceStore } = this.environment;
+        const poolManagement = new PoolManagementSimulation(this.environment);
+
+        const staker = new Staker({ name: 'Staker', deployment, simulationEnvironment: this.environment });
+        await staker.configureERC20TokenAsync(deployment.tokens.zrx);
+        balanceStore.registerTokenOwner(staker.address, staker.name);
+
+        const actions = [
+            staker.simulationActions.validStake,
+            staker.simulationActions.validUnstake,
+            staker.simulationActions.validMoveStake,
+            poolManagement.generator,
+        ];
+        while (true) {
+            const action = _.sample(actions);
+            yield (await action!.next()).value; // tslint:disable-line:no-non-null-assertion
+        }
+    }
+}
+
+blockchainTests.skip('Stake management fuzz test', env => {
+    it('fuzz', async () => {
+        const deployment = await DeploymentManager.deployAsync(env, {
+            numErc20TokensToDeploy: 0,
+            numErc721TokensToDeploy: 0,
+            numErc1155TokensToDeploy: 0,
+        });
+        const balanceStore = new BlockchainBalanceStore(
+            {
+                StakingProxy: deployment.staking.stakingProxy.address,
+                ZRXVault: deployment.staking.zrxVault.address,
+            },
+            { erc20: { ZRX: deployment.tokens.zrx } },
+        );
+
+        const simulationEnv = new SimulationEnvironment(deployment, balanceStore);
+        const simulation = new StakeManagementSimulation(simulationEnv);
+        return simulation.fuzzAsync();
+    });
+});