Export and import show_reblogs together with following list (#10495)

* Refactor imports

* Export show_reblogs when exporting list of followed users

* Add support for importing show_reblogs with following collection

* Fix tests

spec/services/import_service_spec.rb

@@ -1,9 +1,9 @@
 require 'rails_helper'
 
 RSpec.describe ImportService, type: :service do
-  let!(:account) { Fabricate(:account) }
-  let!(:bob)     { Fabricate(:account, username: 'bob') }
-  let!(:eve)     { Fabricate(:account, username: 'eve', domain: 'example.com') }
+  let!(:account) { Fabricate(:account, locked: false) }
+  let!(:bob)     { Fabricate(:account, username: 'bob', locked: false) }
+  let!(:eve)     { Fabricate(:account, username: 'eve', domain: 'example.com', locked: false) }
 
   context 'import old-style list of muted users' do
     subject { ImportService.new }
@@ -81,4 +81,89 @@ RSpec.describe ImportService, type: :service do
       end
     end
   end
+
+  context 'import old-style list of followed users' do
+    subject { ImportService.new }
+
+    let(:csv) { attachment_fixture('mute-imports.txt') }
+
+    before do
+      allow(NotificationWorker).to receive(:perform_async)
+    end
+
+    describe 'when no accounts are followed' do
+      let(:import) { Import.create(account: account, type: 'following', data: csv) }
+      it 'follows the listed accounts, including boosts' do
+        subject.call(import)
+        expect(account.following.count).to eq 2
+        expect(Follow.find_by(account: account, target_account: bob).show_reblogs).to be true
+      end
+    end
+
+    describe 'when some accounts are already followed and overwrite is not set' do
+      let(:import) { Import.create(account: account, type: 'following', data: csv) }
+
+      it 'follows the listed accounts, including notifications' do
+        account.follow!(bob, reblogs: false)
+        subject.call(import)
+        expect(account.following.count).to eq 2
+        expect(Follow.find_by(account: account, target_account: bob).show_reblogs).to be true
+      end
+    end
+
+    describe 'when some accounts are already followed and overwrite is set' do
+      let(:import) { Import.create(account: account, type: 'following', data: csv, overwrite: true) }
+
+      it 'mutes the listed accounts, including notifications' do
+        account.follow!(bob, reblogs: false)
+        subject.call(import)
+        expect(account.following.count).to eq 2
+        expect(Follow.find_by(account: account, target_account: bob).show_reblogs).to be true
+      end
+    end
+  end
+
+  context 'import new-style list of followed users' do
+    subject { ImportService.new }
+
+    let(:csv) { attachment_fixture('new-following-imports.txt') }
+
+    before do
+      allow(NotificationWorker).to receive(:perform_async)
+    end
+
+    describe 'when no accounts are followed' do
+      let(:import) { Import.create(account: account, type: 'following', data: csv) }
+      it 'follows the listed accounts, respecting boosts' do
+        subject.call(import)
+        expect(account.following.count).to eq 2
+        expect(Follow.find_by(account: account, target_account: bob).show_reblogs).to be true
+        expect(Follow.find_by(account: account, target_account: eve).show_reblogs).to be false
+      end
+    end
+
+    describe 'when some accounts are already followed and overwrite is not set' do
+      let(:import) { Import.create(account: account, type: 'following', data: csv) }
+
+      it 'mutes the listed accounts, respecting notifications' do
+        account.follow!(bob, reblogs: true)
+        subject.call(import)
+        expect(account.following.count).to eq 2
+        expect(Follow.find_by(account: account, target_account: bob).show_reblogs).to be true
+        expect(Follow.find_by(account: account, target_account: eve).show_reblogs).to be false
+      end
+    end
+
+    describe 'when some accounts are already followed and overwrite is set' do
+      let(:import) { Import.create(account: account, type: 'following', data: csv, overwrite: true) }
+
+      it 'mutes the listed accounts, respecting notifications' do
+        account.follow!(bob, reblogs: true)
+        subject.call(import)
+        expect(account.following.count).to eq 2
+        expect(Follow.find_by(account: account, target_account: bob).show_reblogs).to be true
+        expect(Follow.find_by(account: account, target_account: eve).show_reblogs).to be false
+      end
+    end
+  end
 end