Change ResolveAccountService's handling of skip_webfinger (#15750)

* Change ResolveAccountService's handling of skip_webfinger

Change it so it never makes any webfinger query, as the name would imply.

* Add tests

* Change FollowService to not take an URI for target_account

* Restore domain-block check in FollowService

* Fix tests

spec/services/follow_service_spec.rb

@@ -10,7 +10,7 @@ RSpec.describe FollowService, type: :service do
       let(:bob) { Fabricate(:user, email: 'bob@example.com', account: Fabricate(:account, locked: true, username: 'bob')).account }
 
       before do
-        subject.call(sender, bob.acct)
+        subject.call(sender, bob)
       end
 
       it 'creates a follow request with reblogs' do
@@ -22,7 +22,7 @@ RSpec.describe FollowService, type: :service do
       let(:bob) { Fabricate(:user, email: 'bob@example.com', account: Fabricate(:account, locked: true, username: 'bob')).account }
 
       before do
-        subject.call(sender, bob.acct, reblogs: false)
+        subject.call(sender, bob, reblogs: false)
       end
 
       it 'creates a follow request without reblogs' do
@@ -35,7 +35,7 @@ RSpec.describe FollowService, type: :service do
 
       before do
         sender.touch(:silenced_at)
-        subject.call(sender, bob.acct)
+        subject.call(sender, bob)
       end
 
       it 'creates a follow request with reblogs' do
@@ -48,7 +48,7 @@ RSpec.describe FollowService, type: :service do
 
       before do
         bob.mute!(sender)
-        subject.call(sender, bob.acct)
+        subject.call(sender, bob)
       end
 
       it 'creates a following relation with reblogs' do
@@ -61,7 +61,7 @@ RSpec.describe FollowService, type: :service do
       let(:bob) { Fabricate(:user, email: 'bob@example.com', account: Fabricate(:account, username: 'bob')).account }
 
       before do
-        subject.call(sender, bob.acct)
+        subject.call(sender, bob)
       end
 
       it 'creates a following relation with reblogs' do
@@ -74,7 +74,7 @@ RSpec.describe FollowService, type: :service do
       let(:bob) { Fabricate(:user, email: 'bob@example.com', account: Fabricate(:account, username: 'bob')).account }
 
       before do
-        subject.call(sender, bob.acct, reblogs: false)
+        subject.call(sender, bob, reblogs: false)
       end
 
       it 'creates a following relation without reblogs' do
@@ -88,7 +88,7 @@ RSpec.describe FollowService, type: :service do
 
       before do
         sender.follow!(bob)
-        subject.call(sender, bob.acct)
+        subject.call(sender, bob)
       end
 
       it 'keeps a following relation' do
@@ -101,7 +101,7 @@ RSpec.describe FollowService, type: :service do
 
       before do
         sender.follow!(bob, reblogs: true)
-        subject.call(sender, bob.acct, reblogs: false)
+        subject.call(sender, bob, reblogs: false)
       end
 
       it 'disables reblogs' do
@@ -114,7 +114,7 @@ RSpec.describe FollowService, type: :service do
 
       before do
         sender.follow!(bob, reblogs: false)
-        subject.call(sender, bob.acct, reblogs: true)
+        subject.call(sender, bob, reblogs: true)
       end
 
       it 'disables reblogs' do
@@ -128,7 +128,7 @@ RSpec.describe FollowService, type: :service do
 
     before do
       stub_request(:post, "http://example.com/inbox").to_return(:status => 200, :body => "", :headers => {})
-      subject.call(sender, bob.acct)
+      subject.call(sender, bob)
     end
 
     it 'creates follow request' do

spec/services/resolve_account_service_spec.rb

@@ -13,6 +13,47 @@ RSpec.describe ResolveAccountService, type: :service do
     stub_request(:get, 'https://example.com/.well-known/webfinger?resource=acct:hoge@example.com').to_return(status: 410)
   end
 
+  context 'using skip_webfinger' do
+    context 'when account is known' do
+      let!(:remote_account) { Fabricate(:account, username: 'foo', domain: 'ap.example.com', protocol: 'activitypub') }
+
+      context 'when domain is banned' do
+        let!(:domain_block) { Fabricate(:domain_block, domain: 'ap.example.com', severity: :suspend) }
+
+        it 'does not return an account' do
+          expect(subject.call('foo@ap.example.com', skip_webfinger: true)).to be_nil
+        end
+
+        it 'does not make a webfinger query' do
+          subject.call('foo@ap.example.com', skip_webfinger: true)
+          expect(a_request(:get, 'https://ap.example.com/.well-known/webfinger?resource=acct:foo@ap.example.com')).to_not have_been_made
+        end
+      end
+
+      context 'when domain is not banned' do
+        it 'returns the expected account' do
+          expect(subject.call('foo@ap.example.com', skip_webfinger: true)).to eq remote_account
+        end
+
+        it 'does not make a webfinger query' do
+          subject.call('foo@ap.example.com', skip_webfinger: true)
+          expect(a_request(:get, 'https://ap.example.com/.well-known/webfinger?resource=acct:foo@ap.example.com')).to_not have_been_made
+        end
+      end
+    end
+
+    context 'when account is not known' do
+      it 'does not return an account' do
+        expect(subject.call('foo@ap.example.com', skip_webfinger: true)).to be_nil
+      end
+
+      it 'does not make a webfinger query' do
+        subject.call('foo@ap.example.com', skip_webfinger: true)
+        expect(a_request(:get, 'https://ap.example.com/.well-known/webfinger?resource=acct:foo@ap.example.com')).to_not have_been_made
+      end
+    end
+  end
+
   context 'when there is an LRDD endpoint but no resolvable account' do
     before do
       stub_request(:get, "https://quitter.no/.well-known/host-meta").to_return(request_fixture('.host-meta.txt'))