Drop the usage of Tor Check in our tests.

It doesn't make sense now when we use Chutney since that always means
it will report that Tor is not being used.

In some scenarios we used it simply because we needed *some* page
(distinct from the Tails News page) and we had the image. In those
cases we now use the Tails homepage instead. I tried to use dogtail,
but realized that dogtail won't work for the Unsafe Browser due to

features/step_definitions/browser.rb

@@ -113,6 +113,28 @@ When /^I open the address "([^"]*)" in the (.*)$/ do |address, browser|
   end
 end
 
+# This step is limited to the Tor Browser due to #7502 since dogtail
+# uses the same interface.
+Then /^a page titled "([^"]+)" has loaded in the Tor Browser$/ do |title|
+  expected_title = "#{title} - Tor Browser"
+  app = Dogtail::Application.new('Firefox')
+  app.child(expected_title, roleName: 'frame').wait(60)
+  # The 'Stop loading this page' button (graphically shown as an X) is
+  # only shown while a page is loading, so once we see the expected
+  # title *and* this one has disappeared, then we can be sure that the
+  # page has fully loaded.
+  try_for(60) do
+    assert_raise do
+      app.child(
+        'Location',
+        roleName: 'push button',
+        description: 'Stop loading this page',
+        retry: False
+      )
+    end
+  end
+end
+
 Then /^the (.*) has no plugins installed$/ do |browser|
   step "I open the address \"about:plugins\" in the #{browser}"
   step "I see \"TorBrowserNoPlugins.png\" after at most 30 seconds"
@@ -194,27 +216,15 @@ Then /^the file is saved to the default Tor Browser download directory$/ do
   try_for(10) { $vm.file_exist?(expected_path) }
 end
 
-When /^I open Tor Check in the (.+)$/ do |browser|
-  step "I open the address \"https://check.torproject.org\" in the #{browser}"
-end
-
-Then /^I see Tor Check (.+) in the (.+)$/ do |expectation, browser|
-  assert(['Tor Browser', 'Unsafe Browser'].include?(browser),
-         "This step does not support the '#{browser}'")
-  success = 'TorBrowserTorCheck.png'
-  failure = 'UnsafeBrowserTorCheckFail.png'
-  case expectation
-  when 'succeed'
-    assert_equal('Tor Browser', browser,
-                 'Only the Tor Browser can pass Tor Check')
-    expected_image = success
-  when 'fail'
-    expected_image = failure
-  when 'give the expected outcome'
-    # Since we use Chutney, failure is expected
-    expected_image = failure
-  else
-    raise "Unsupported expectation '#{expectation}'"
-  end
-  step "I see \"#{expected_image}\" after at most 180 seconds"
+When /^I open Tails homepage in the (.+)$/ do |browser|
+  step "I open the address \"https://tails.boum.org\" in the #{browser}"
+end
+
+Then /^Tails homepage loads in the Tor Browser$/ do
+  title = 'Tails - Privacy for anyone anywhere'
+  step "a page titled \"#{title}\" has loaded in the Tor Browser"
+end
+
+Then /^Tails homepage loads in the Unsafe Browser$/ do
+  @screen.wait('TailsHomepage.png', 60)
 end

features/step_definitions/unsafe_browser.rb

@@ -140,9 +140,9 @@ Then /^I cannot configure the Unsafe Browser to use any local proxies$/ do
     @screen.waitVanish('UnsafeBrowserProxySettingsWindow.png', 10)
 
     # Test that the proxy settings work as they should
-    step "I open the address \"https://check.torproject.org\" in the Unsafe Browser"
+    step 'I open Tails homepage in the Unsafe Browser'
     if proxy_type == no_proxy
-      @screen.wait('UnsafeBrowserTorCheckFail.png', 60)
+      step 'Tails homepage loads in the Unsafe Browser'
     else
       @screen.wait('UnsafeBrowserProxyRefused.png', 60)
     end

features/tor_enforcement.feature

@@ -22,8 +22,8 @@ Feature: The Tor enforcement is effective
     Given I have started Tails from DVD and logged in and the network is connected
     And I capture all network traffic
     When I successfully start the Unsafe Browser
-    And I open Tor Check in the Unsafe Browser
-    And I see Tor Check fail in the Unsafe Browser
+    And I open Tails homepage in the Unsafe Browser
+    And Tails homepage loads in the Unsafe Browser
     Then the firewall leak detector has detected leaks
 
   Scenario: Anti test: Detecting TCP leaks of DNS lookups with the firewall leak detector

features/torified_browsing.feature

@@ -109,21 +109,13 @@ Feature: Browsing the web using the Tor Browser
     And the Tor Browser has started
     Then the Tor Browser uses all expected TBB shared libraries
 
-  @check_tor_leaks @fragile
-  Scenario: Opening check.torproject.org in the Tor Browser shows the green onion and the congratulations message
-    Given I have started Tails from DVD and logged in and the network is connected
-    When I start the Tor Browser
-    And the Tor Browser has started and loaded the startup page
-    And I open Tor Check in the Tor Browser
-    Then I see Tor Check give the expected outcome in the Tor Browser
-
   @check_tor_leaks @fragile
   Scenario: The Tor Browser's "New identity" feature works as expected
     Given I have started Tails from DVD and logged in and the network is connected
     When I start the Tor Browser
     And the Tor Browser has started and loaded the startup page
-    And I open Tor Check in the Tor Browser
-    Then I see Tor Check give the expected outcome in the Tor Browser
+    And I open Tails homepage in the Tor Browser
+    Then Tails homepage loads in the Tor Browser
     When I request a new identity using Torbutton
     And I acknowledge Torbutton's New Identity confirmation prompt
     Then the Tor Browser loads the startup page

features/unsafe_browser.feature

@@ -40,14 +40,6 @@ Feature: Browsing the web using the Unsafe Browser
     And I start the Unsafe Browser
     Then I see a warning about another instance already running
 
-  @fragile
-  Scenario: Opening check.torproject.org in the Unsafe Browser shows the red onion and a warning message.
-    Given I have started Tails from DVD and logged in and the network is connected
-    When I successfully start the Unsafe Browser
-    And I open Tor Check in the Unsafe Browser
-    Then I see Tor Check give the expected outcome in the Unsafe Browser
-    And the clearnet user has sent packets out to the Internet
-
   @fragile
   Scenario: The Unsafe Browser cannot be configured to use Tor and other local proxies.
     Given I have started Tails from DVD and logged in and the network is connected