Allow seeding a specific tenant with db:dev_seed

Until now, running `db:dev_seed` created development data for the
default tenant but it was impossible to create this data for other
tenants.

Now the tenant can be provided as a parameter.

Note that, in order to be able to execute this task twice while running
the tests, we need to use `load` instead of `require_relative`, since
`require_relative` doesn't load the file again if it's already loaded.

Also note that having two optional parameters in a rake task results in
a cumbersome syntax to execute it. To avoid this, we're simply removing
the `print_log` parameter, which was used mainly for the test
environment. Now we use a different logic to get the same result.

From now on it won't be possible to pass the option to avoid the log in
the development environment. I don't know a developer who's ever used
this option, though, and it can always be done using `> /dev/null`.

db/dev_seeds.rb

@@ -1,11 +1,15 @@
 unless Rails.env.test?
-  Tenant.destroy_all
+  Tenant.destroy_all if Tenant.default?
   ActiveRecord::Tasks::DatabaseTasks.truncate_all
 end
 
 @logger = Logger.new(STDOUT)
 @logger.formatter = proc do |_severity, _datetime, _progname, msg|
-                      msg unless @avoid_log
+                      msg unless Rails.env.test?
+                    end
+
+def load_dev_seeds(dev_seeds_file)
+  load Rails.root.join("db", "dev_seeds", "#{dev_seeds_file}.rb")
 end
 
 def section(section_title)
@@ -32,28 +36,30 @@ def random_locales_attributes(**attribute_names_with_values)
   end
 end
 
-require_relative "dev_seeds/settings"
-require_relative "dev_seeds/geozones"
-require_relative "dev_seeds/users"
-require_relative "dev_seeds/tags_categories"
-require_relative "dev_seeds/debates"
-require_relative "dev_seeds/proposals"
-require_relative "dev_seeds/budgets"
-require_relative "dev_seeds/comments"
-require_relative "dev_seeds/votes"
-require_relative "dev_seeds/flags"
-require_relative "dev_seeds/hiddings"
-require_relative "dev_seeds/banners"
-require_relative "dev_seeds/polls"
-require_relative "dev_seeds/communities"
-require_relative "dev_seeds/legislation_processes"
-require_relative "dev_seeds/newsletters"
-require_relative "dev_seeds/notifications"
-require_relative "dev_seeds/widgets"
-require_relative "dev_seeds/admin_notifications"
-require_relative "dev_seeds/legislation_proposals"
-require_relative "dev_seeds/milestones"
-require_relative "dev_seeds/pages"
-require_relative "dev_seeds/sdg"
+log "Creating dev seeds for tenant #{Tenant.current_schema}" unless Tenant.default?
+
+load_dev_seeds "settings"
+load_dev_seeds "geozones"
+load_dev_seeds "users"
+load_dev_seeds "tags_categories"
+load_dev_seeds "debates"
+load_dev_seeds "proposals"
+load_dev_seeds "budgets"
+load_dev_seeds "comments"
+load_dev_seeds "votes"
+load_dev_seeds "flags"
+load_dev_seeds "hiddings"
+load_dev_seeds "banners"
+load_dev_seeds "polls"
+load_dev_seeds "communities"
+load_dev_seeds "legislation_processes"
+load_dev_seeds "newsletters"
+load_dev_seeds "notifications"
+load_dev_seeds "widgets"
+load_dev_seeds "admin_notifications"
+load_dev_seeds "legislation_proposals"
+load_dev_seeds "milestones"
+load_dev_seeds "pages"
+load_dev_seeds "sdg"
 
 log "All dev seeds created successfuly 👍"

lib/tasks/db.rake

@@ -1,9 +1,8 @@
 namespace :db do
   desc "Resets the database and loads it from db/dev_seeds.rb"
-  task :dev_seed, [:print_log] => [:environment] do |t, args|
-    @avoid_log = args[:print_log] == "avoid_log"
+  task :dev_seed, [:tenant] => [:environment] do |_, args|
     I18n.enforce_available_locales = false
-    load(Rails.root.join("db", "dev_seeds.rb"))
+    Tenant.switch(args[:tenant]) { load(Rails.root.join("db", "dev_seeds.rb")) }
   end
 
   desc "Calculates the TSV column for all comments and proposal notifications"

spec/lib/tasks/dev_seed_spec.rb

@@ -1,11 +1,18 @@
 require "rails_helper"
 
 describe "rake db:dev_seed" do
-  let :run_rake_task do
-    Rake.application.invoke_task("db:dev_seed[avoid_log]")
-  end
+  before { Rake::Task["db:dev_seed"].reenable }
 
   it "seeds the database without errors" do
-    expect { run_rake_task }.not_to raise_error
+    expect { Rake.application.invoke_task("db:dev_seed") }.not_to raise_error
+  end
+
+  it "can seed a tenant" do
+    create(:tenant, schema: "democracy")
+
+    Rake.application.invoke_task("db:dev_seed[democracy]")
+
+    expect(Debate.count).to eq 0
+    Tenant.switch("democracy") { expect(Debate.count).not_to eq 0 }
   end
 end