AO3-4702 Test autocomplete

app/controllers/autocomplete_controller.rb

@@ -36,7 +36,9 @@ def pseud
   private
     def tag_output(search_param, tag_type)
       tags = Tag.autocomplete_lookup(:search_param => search_param, :autocomplete_prefix => "autocomplete_tag_#{tag_type}")
-      render_output tags.map {|r| Tag.name_from_autocomplete(r)}
+      output = tags.map { |r| Tag.name_from_autocomplete(r) }
+      Rails.cache.write('/v1/autocomplete_hack/last_result', output) if ENV["RAILS_ENV"] == "test"
+      render_output output
     end
   public
   # these are all basically duplicates but make our calls to autocomplete more readable

features/step_definitions/web_steps.rb

@@ -33,6 +33,11 @@ def with_scope(locator)
   page.driver.browser.url_whitelist = ['http://127.0.0.1']
 end
 
+When /^I type in "([^"]*)" with "([^"]*)"$/ do |selector, contents|
+  Rails.cache.delete('/v1/autocomplete_hack/last_result')
+  find(selector).native.send_keys(contents)
+end
+
 When /^I clear the network traffic$/ do
   page.driver.clear_network_traffic
 end
@@ -120,6 +125,23 @@ def with_scope(locator)
   }.to raise_error
 end
 
+Then(/^I should see "([^"]*)" in autocomplete hack$/) do |answer|
+  # This breaks the rule https://github.com/cucumber/cucumber/wiki/Given-When-Then
+  # While it might be tempting to implement Then steps to just look in the database 
+  # resist the temptation. You should only verify outcome that is observable for
+  # the user (or external system) and databases usually are not.
+  result = false
+  (1..20).each do 
+    next unless Rails.cache.read('/v1/autocomplete_hack/last_result').nil?
+    sleep 1
+  end
+  assert !Rails.cache.read('/v1/autocomplete_hack/last_result').nil? 
+  Rails.cache.read('/v1/autocomplete_hack/last_result').each do |autocomplete|
+    result = true if autocomplete == answer
+  end
+  assert result
+end
+
 Then /^visiting "([^"]*)" should fail with "([^"]*)"$/ do |path, flash_error|
   visit path
   step %{I should see "#{flash_error}" within ".flash"}

features/tags_and_wrangling/tag_wrangling_fandoms.feature

@@ -2,7 +2,7 @@
 
 Feature: Tag Wrangling - Fandoms
 
-Scenario: fandoms wrangling - syns, mergers, autocompletes, metatags
+Scenario: fandoms wrangling - syns, mergers, metatags
 
   Given the following activated tag wrangler exists
     | login  | password    |
@@ -211,3 +211,24 @@ Scenario: fandoms wrangling - syns, mergers, autocompletes, metatags
     And I should see "Be a second B fandom" within "#letter-B .tags"
     And I should see "Be another thing" within "#letter-B .tags"
 
+@javascript
+Scenario: fandoms wrangling - autocompletes
+
+  Given the following activated tag wrangler exists
+        | login  | password    |
+        | Enigel | wrangulate! |
+    And basic tags
+    And the following typed tags exists
+        | name                            | type         | canonical |
+        | Steven Universe                 | Fandom       | true      |
+        | Ruby (Pokemon)                  | Character    | true      |
+        | Ruby (Firefly)                  | Character    | true      |
+        | Ruby (Steven Universe)          | Character    | true      |
+        | Ruby (SU)                       | Character    | false     |
+    And I am logged in as "Enigel" with password "wrangulate!"
+    When I go to the "Ruby (SU)" tag page
+     And I follow "Edit"
+     And I type in "ul.autocomplete input" with "Ruby"
+    Then I should see "Ruby (Pokemon)" in autocomplete hack
+      And I should see "Ruby (Firefly)" in autocomplete hack
+      And I should see "Ruby (Steven Universe)" in autocomplete hack