message: add assertion to make eslint happy
diff: @@ -3,7 +3,6 @@ import { testContext, disposeTestDocumentStore } from "../Utils/TestUtil";
  import {
  IDocumentStore,
  - DocumentStore,
  } from "../../src";
  describe("Issue #315", function () {
  @@ -30,6 +29,7 @@ describe("Issue #315", function () {
  {
  const session = store.openSession();
  const item = await session.load("items/1");
  + assert.ok(item);
  assert.strictEqual(item['str'], str);
  }
  