4 files changed, 12 insertions, 12 deletions
diff --git a/test/content/InputDriver.test.ts b/test/content/InputDriver.test.ts
index bfada87..f464dac 100644
--- a/test/content/InputDriver.test.ts
+++ b/test/content/InputDriver.test.ts
@@ -16,8 +16,6 @@ describe("InputDriver", () => {
 
   afterEach(() => {
     target.remove();
-    target = null;
-    driver = null;
   });
 
   it("register callbacks", (done) => {
diff --git a/test/content/presenters/Hint.test.ts b/test/content/presenters/Hint.test.ts
index e64c39f..f961f88 100644
--- a/test/content/presenters/Hint.test.ts
+++ b/test/content/presenters/Hint.test.ts
@@ -13,17 +13,17 @@ describe("Hint", () => {
 
   describe("#constructor", () => {
     it("creates a hint element with tag name", () => {
-      const link = document.getElementById("test-link");
+      const link = document.getElementById("test-link")!!;
       new Hint(link, "abc");
 
       const elem = document.querySelector(".vimvixen-hint");
-      expect(elem.textContent.trim()).to.be.equal("abc");
+      expect(elem!!.textContent!!.trim()).to.be.equal("abc");
     });
   });
 
   describe("#show", () => {
     it("shows an element", () => {
-      const link = document.getElementById("test-link");
+      const link = document.getElementById("test-link")!!;
       const hint = new Hint(link, "abc");
       hint.hide();
       hint.show();
@@ -46,10 +46,10 @@ describe("Hint", () => {
 
   describe("#remove", () => {
     it("removes an element", () => {
-      const link = document.getElementById("test-link");
+      const link = document.getElementById("test-link")!!;
       const hint = new Hint(link, "abc");
 
-      const elem = document.querySelector(".vimvixen-hint");
+      const elem = document.querySelector(".vimvixen-hint")!!;
       expect(elem.parentElement).to.not.be.null;
       hint.remove();
       expect(elem.parentElement).to.be.null;
diff --git a/test/content/presenters/NavigationPresenter.test.ts b/test/content/presenters/NavigationPresenter.test.ts
index b362d8d..af3b487 100644
--- a/test/content/presenters/NavigationPresenter.test.ts
+++ b/test/content/presenters/NavigationPresenter.test.ts
@@ -4,7 +4,7 @@ import { expect } from "chai";
 describe("NavigationPresenterImpl", () => {
   let sut: NavigationPresenterImpl;
 
-  const testRel = (done, rel, html) => {
+  const testRel = (done: () => void, rel: string, html: string) => {
     const method =
       rel === "prev" ? sut.openLinkPrev.bind(sut) : sut.openLinkNext.bind(sut);
     document.body.innerHTML = html;
@@ -14,8 +14,10 @@ describe("NavigationPresenterImpl", () => {
       done();
     }, 0);
   };
-  const testPrev = (html) => (done) => testRel(done, "prev", html);
-  const testNext = (html) => (done) => testRel(done, "next", html);
+  const testPrev = (html: string) => (done: () => void) =>
+    testRel(done, "prev", html);
+  const testNext = (html: string) => (done: () => void) =>
+    testRel(done, "next", html);
 
   before(() => {
     sut = new NavigationPresenterImpl();
diff --git a/test/content/usecases/SettingUseCaase.test.ts b/test/content/usecases/SettingUseCaase.test.ts
index 19a167a..1cc1e8a 100644
--- a/test/content/usecases/SettingUseCaase.test.ts
+++ b/test/content/usecases/SettingUseCaase.test.ts
@@ -40,7 +40,7 @@ describe("AddonEnabledUseCase", () => {
   let sut: SettingUseCase;
 
   beforeEach(() => {
-    const testSettings = {
+    const testSettings = Settings.fromJSON({
       keymaps: {},
       search: {
         default: "google",
@@ -54,7 +54,7 @@ describe("AddonEnabledUseCase", () => {
         complete: "sbh",
       },
       blacklist: [],
-    };
+    });
 
     repository = new MockSettingRepository();
     client = new MockSettingClient(testSettings);