5 files changed, 26 insertions, 15 deletions
diff --git a/test/content/InputDriver.test.ts b/test/content/InputDriver.test.ts
index 367ec1d..d3a55dd 100644
--- a/test/content/InputDriver.test.ts
+++ b/test/content/InputDriver.test.ts
@@ -104,7 +104,7 @@ describe('InputDriver', () => {
     ['input', 'textarea', 'select'].forEach((name) => {
       const input = window.document.createElement(name);
       const driver = new InputDriver(input);
-      driver.onKey((key: Key): boolean => {
+      driver.onKey((_key: Key): boolean => {
         expect.fail();
         return false;
       });
diff --git a/test/content/presenters/Hint.test.ts b/test/content/presenters/Hint.test.ts
index 708ddaa..7daa63d 100644
--- a/test/content/presenters/Hint.test.ts
+++ b/test/content/presenters/Hint.test.ts
@@ -12,7 +12,7 @@ describe('Hint', () => {
   describe('#constructor', () => {
     it('creates a hint element with tag name', () => {
       const link = document.getElementById('test-link');
-      const hint = new Hint(link, 'abc');
+      new Hint(link, 'abc');
 
       const elem = document.querySelector('.vimvixen-hint');
       expect(elem.textContent.trim()).to.be.equal('abc');
diff --git a/test/content/presenters/NavigationPresenter.test.ts b/test/content/presenters/NavigationPresenter.test.ts
index 5b6a8ca..6aa057b 100644
--- a/test/content/presenters/NavigationPresenter.test.ts
+++ b/test/content/presenters/NavigationPresenter.test.ts
@@ -1,9 +1,8 @@
-import NavigationPresenter, { NavigationPresenterImpl }
-  from '../../../src/content/presenters/NavigationPresenter';
+import { NavigationPresenterImpl } from '../../../src/content/presenters/NavigationPresenter';
 import { expect } from 'chai';
 
-describe('NavigationPresenter', () => {
-  let sut;
+describe('NavigationPresenterImpl', () => {
+  let sut: NavigationPresenterImpl;
 
   const testRel = (done, rel, html) => {
     const method = rel === 'prev' ? sut.openLinkPrev.bind(sut) : sut.openLinkNext.bind(sut);
diff --git a/test/content/repositories/KeymapRepository.test.ts b/test/content/repositories/KeymapRepository.test.ts
index df013df..68f515c 100644
--- a/test/content/repositories/KeymapRepository.test.ts
+++ b/test/content/repositories/KeymapRepository.test.ts
@@ -12,11 +12,11 @@ describe('KeymapRepositoryImpl', () => {
 
   describe('#enqueueKey()', () => {
     it('enqueues keys', () => {
-      sut.enqueueKey(Key.fromMapKey('a');
-      sut.enqueueKey(Key.fromMapKey('b');
-      let sequence = sut.enqueueKey(Key.fromMapKey('c'));
+      sut.enqueueKey(Key.fromMapKey('a'));
+      sut.enqueueKey(Key.fromMapKey('b'));
+      const sequence = sut.enqueueKey(Key.fromMapKey('c'));
 
-      let keys = sequence.keys;
+      const keys = sequence.keys;
       expect(keys[0].equals(Key.fromMapKey('a'))).to.be.true;
       expect(keys[1].equals(Key.fromMapKey('b'))).to.be.true;
       expect(keys[2].equals(Key.fromMapKey('c'))).to.be.true;
@@ -30,7 +30,7 @@ describe('KeymapRepositoryImpl', () => {
       sut.enqueueKey(Key.fromMapKey('c'));
       sut.clear();
 
-      let sequence = sut.enqueueKey(Key.fromMapKey('a'));
+      const sequence = sut.enqueueKey(Key.fromMapKey('a'));
       expect(sequence.length()).to.equal(1);
     });
   });
diff --git a/test/content/usecases/ClipboardUseCase.test.ts b/test/content/usecases/ClipboardUseCase.test.ts
index 2e711c6..3cc82fe 100644
--- a/test/content/usecases/ClipboardUseCase.test.ts
+++ b/test/content/usecases/ClipboardUseCase.test.ts
@@ -6,19 +6,31 @@ import ConsoleClient from '../../../src/content/client/ConsoleClient';
 
 import * as sinon from 'sinon';
 import { expect } from 'chai';
+import {Operation} from "../../../src/shared/operations";
 
 describe('ClipboardUseCase', () => {
   let clipboardRepository: ClipboardRepository;
+
   let operationClient: OperationClient;
+
   let consoleClient: ConsoleClient;
+
   let sut: ClipboardUseCase;
 
   beforeEach(() => {
-    const modal = <ConsoleClient>{};
+    clipboardRepository = new class implements ClipboardRepository {
+      read(): string { return ""; }
+      write(_text: string) {}
+    };
+    operationClient = new class implements OperationClient {
+      execBackgroundOp(_repeat: number, _op: Operation): Promise<void> { return Promise.resolve() }
+      internalOpenUrl(_url: string, _newTab?: boolean, _background?: boolean): Promise<void> { return Promise.resolve() }
+    };
+    consoleClient = new class implements ConsoleClient {
+      error(_text: string): Promise<void> { return Promise.resolve() }
+      info(_text: string): Promise<void> { return Promise.resolve() }
+    };
 
-    clipboardRepository = <ClipboardRepository>{ read() {}, write(_) {} };
-    operationClient = <OperationClient>{ internalOpenUrl(_) {} };
-    consoleClient = <ConsoleClient>{ info(_) {}};
     sut = new ClipboardUseCase(
       clipboardRepository,
       new SettingRepositoryImpl(),