import SelectFirstTabOperator from "../../../../src/background/operators/impls/SelectFirstTabOperator"; import MockTabPresenter from "../../mock/MockTabPresenter"; describe("SelectFirstTabOperator", () => { describe("#run", () => { it("select the leftmost tab", async () => { const tabPresenter = new MockTabPresenter(); await tabPresenter.create("https://example.com/1", { active: false }); await tabPresenter.create("https://example.com/2", { active: true }); await tabPresenter.create("https://example.com/3", { active: false }); const sut = new SelectFirstTabOperator(tabPresenter); await sut.run(); const url = (await tabPresenter.getCurrent()).url; expect(url).toEqual("https://example.com/1"); }); }); });