add createStakingPool and decreaseStakingPoolOperatorShare

contracts/integrations/test/function-assertions/decreaseStakingPoolOperatorShare.ts

@@ -0,0 +1,22 @@
+import { expect } from '@0x/contracts-test-utils';
+
+import { DeploymentManager } from '../utils/deployment_manager';
+import { FunctionAssertion, FunctionResult } from '../utils/function_assertions';
+
+export function validDecreaseStakingPoolOperatorShareAssertion(
+    deployment: DeploymentManager,
+    context?: any,
+): FunctionAssertion<{}> {
+    const { stakingWrapper } = deployment.staking;
+
+    return new FunctionAssertion(stakingWrapper.decreaseStakingPoolOperatorShare, {
+        after: async (_beforeInfo, _result: FunctionResult, poolId: string, expectedOperatorShare: number) => {
+            const { operatorShare } = await stakingWrapper.getStakingPool.callAsync(poolId);
+            expect(operatorShare).to.bignumber.equal(expectedOperatorShare);
+            console.log(`decreaseStakingPoolOperatorShare(${poolId}, ${expectedOperatorShare})`);
+            if (context !== undefined) {
+                context.operatorShares[poolId] = operatorShare;
+            }
+        },
+    });
+}