func testLoginFailure() {
        let app = XCUIApplication()

        let username = app.textFields["Username"]
        username.tap()
        username.typeText("wrongUsername")

        let password = app.secureTextFields["Password"]
        password.tap()
        password.typeText("wrongPassword")

        XCUIApplication().buttons["Login"].tap()

        XCTAssertTrue(app.staticTexts["❌ username or password not match"].exists)
    }