Test examples

Which variant of tests is better? The example for login form.
Note: 'loginPage' variable is set automatically to the deafult login page.
============= Variant 1 =========================
1a)
public void loginWithCorrectUser(){
  IndexPage indexPage = loginPage.open().login(new CorrectUser1());
  assertEquals("Check that we are on correct page",
    loginPage.getTitle(), driver.getTitle());
  assertTrue("Check we are actually loged in", indexPage.isLoggedIn());
}
1b)
public void testLogout(){
  LoggedInPage inPage = ((LoginPage)loginPage.open()).login();
  LoginPage loginPage2 = inPage.logout();
  assertEquals("Check that we are on the correct page",
    loginPage.getUrl(), loginPage2.getUrl());
  assertTrue("Check that login button exists",
    loginPage.isNotLoggedIn());
}
============= Variant 2 =========================
2a)
public void loginWithCorrectUser(){
  User.newUser(UserTypes.EXISTENT)
    .doLogin()
      .checkLoggedIn(true);
}
2b)
public void testLogout(){
  User.newUser(UserTypes.EXISTENT)
    .doLogin()
      .checkLoggedIn(true)
    .doLogout()
      .checkLoggedIn(false)
      .checkLoggedOut(true);
}
============= Variant 3 =========================
3a)
public void loginWithCorrectUser(){
  User user1 = User.createNewUser();
  loginPage.type("username", user1.getName());
  loginPage.type("password", user1.getPass());
  loginPage.click("loginButton");
  IndexPage indexPage = PageFactory.initElements(driver, IndexPage.class);
  assertTrue("Check we are actually loged in", indexPage.isElementPresent(indexPage.linkLogout));
}
3b)
public void testLogout(){
  User user1 = User.createNewUser();
  loginPage.type("username", user1.getName());
  loginPage.type("password", user1.getPass());
  IndexPage indexPage = loginPage.click("loginButton").click("logoutLink");
  LoginPage loginPage2 = PageFactory.initElements(driver, LoginPage.class);
  assertEquals("Check that we are on the correct page",
    loginPage.getUrl(), loginPage2.getUrl());
  assertTrue("Check that login button exists",
    loginPage.isElementPresent("loginButton"));
}