1 files changed, 4 insertions, 3 deletions
diff --git a/test/background/operators/impls/ZoomOutOperator.test.ts b/test/background/operators/impls/ZoomOutOperator.test.ts
index e0bbcd9..3165707 100644
--- a/test/background/operators/impls/ZoomOutOperator.test.ts
+++ b/test/background/operators/impls/ZoomOutOperator.test.ts
@@ -1,4 +1,3 @@
-import sinon from "sinon";
 import ZoomOutOperator from "../../../../src/background/operators/impls/ZoomOutOperator";
 import MockZoomPresenter from "../../mock/MockZoomPresenter";
 
@@ -6,12 +5,14 @@ describe("ZoomOutOperator", () => {
   describe("#run", () => {
     it("zoom-in the current tab", async () => {
       const zoomPresenter = new MockZoomPresenter();
-      const mock = sinon.mock(zoomPresenter).expects("zoomOut").once();
+      const zoomOutSpy = jest
+        .spyOn(zoomPresenter, "zoomOut")
+        .mockReturnValue(Promise.resolve());
 
       const sut = new ZoomOutOperator(zoomPresenter);
       await sut.run();
 
-      mock.verify();
+      expect(zoomOutSpy).toBeCalled();
     });
   });
 });