Search cleanup (mastodon#1333)

* Clean up SQL output in Tag and Account search methods

* Add basic coverage for Tag.search_for

* Add coverage for Account.search_for

* Add coverage for Account.advanced_search_for

app/models/account.rb

@@ -203,7 +203,7 @@ def find_remote(username, domain)
     end
 
     def triadic_closures(account, limit = 5)
-      sql = <<SQL
+      sql = <<-SQL.squish
         WITH first_degree AS (
             SELECT target_account_id
             FROM follows
@@ -216,7 +216,7 @@ def triadic_closures(account, limit = 5)
         GROUP BY target_account_id, accounts.id
         ORDER BY count(account_id) DESC
         LIMIT ?
-SQL
+      SQL
 
       Account.find_by_sql([sql, account.id, account.id, limit])
     end
@@ -226,15 +226,15 @@ def search_for(terms, limit = 10)
       textsearch = '(setweight(to_tsvector(\'simple\', accounts.display_name), \'A\') || setweight(to_tsvector(\'simple\', accounts.username), \'B\') || setweight(to_tsvector(\'simple\', coalesce(accounts.domain, \'\')), \'C\'))'
       query      = 'to_tsquery(\'simple\', \'\'\' \' || ' + terms + ' || \' \'\'\' || \':*\')'
 
-      sql = <<SQL
+      sql = <<-SQL.squish
         SELECT
           accounts.*,
           ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
         FROM accounts
         WHERE #{query} @@ #{textsearch}
         ORDER BY rank DESC
         LIMIT ?
-SQL
+      SQL
 
       Account.find_by_sql([sql, limit])
     end
@@ -244,7 +244,7 @@ def advanced_search_for(terms, account, limit = 10)
       textsearch = '(setweight(to_tsvector(\'simple\', accounts.display_name), \'A\') || setweight(to_tsvector(\'simple\', accounts.username), \'B\') || setweight(to_tsvector(\'simple\', coalesce(accounts.domain, \'\')), \'C\'))'
       query      = 'to_tsquery(\'simple\', \'\'\' \' || ' + terms + ' || \' \'\'\' || \':*\')'
 
-      sql = <<SQL
+      sql = <<-SQL.squish
         SELECT
           accounts.*,
           (count(f.id) + 1) * ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
@@ -254,7 +254,7 @@ def advanced_search_for(terms, account, limit = 10)
         GROUP BY accounts.id
         ORDER BY rank DESC
         LIMIT ?
-SQL
+      SQL
 
       Account.find_by_sql([sql, account.id, account.id, limit])
     end

app/models/tag.rb

@@ -17,15 +17,15 @@ def search_for(terms, limit = 5)
       textsearch = 'to_tsvector(\'simple\', tags.name)'
       query      = 'to_tsquery(\'simple\', \'\'\' \' || ' + terms + ' || \' \'\'\' || \':*\')'
 
-      sql = <<SQL
+      sql = <<-SQL.squish
         SELECT
           tags.*,
           ts_rank_cd(#{textsearch}, #{query}) AS rank
         FROM tags
         WHERE #{query} @@ #{textsearch}
         ORDER BY rank DESC
         LIMIT ?
-SQL
+      SQL
 
       Tag.find_by_sql([sql, limit])
     end

spec/models/account_spec.rb

@@ -170,6 +170,61 @@
     end
   end
 
+  describe '.search_for' do
+    before do
+      @match = Fabricate(
+        :account,
+        display_name: "Display Name",
+        username: "username",
+        domain: "example.com"
+      )
+      _missing = Fabricate(
+        :account,
+        display_name: "Missing",
+        username: "missing",
+        domain: "missing.com"
+      )
+    end
+
+    it 'finds accounts with matching display_name' do
+      results = Account.search_for("display")
+      expect(results).to eq [@match]
+    end
+
+    it 'finds accounts with matching username' do
+      results = Account.search_for("username")
+      expect(results).to eq [@match]
+    end
+
+    it 'finds accounts with matching domain' do
+      results = Account.search_for("example")
+      expect(results).to eq [@match]
+    end
+
+    it 'ranks multiple matches higher' do
+      account = Fabricate(
+        :account,
+        username: "username",
+        display_name: "username"
+      )
+      results = Account.search_for("username")
+      expect(results).to eq [account, @match]
+    end
+  end
+
+  describe '.advanced_search_for' do
+    it 'ranks followed accounts higher' do
+      account = Fabricate(:account)
+      match = Fabricate(:account, username: "Matching")
+      followed_match = Fabricate(:account, username: "Matcher")
+      Fabricate(:follow, account: account, target_account: followed_match)
+
+      results = Account.advanced_search_for("match", account)
+      expect(results).to eq [followed_match, match]
+      expect(results.first.rank).to be > results.last.rank
+    end
+  end
+
   describe '.find_local' do
     before do
       Fabricate(:account, username: 'Alice')

spec/models/tag_spec.rb

@@ -12,4 +12,15 @@
       expect(subject.match('https://en.wikipedia.org/wiki/Ghostbusters_(song)#Lawsuit')).to be_nil
     end
   end
+
+  describe '.search_for' do
+    it 'finds tag records with matching names' do
+      tag = Fabricate(:tag, name: "match")
+      _miss_tag = Fabricate(:tag, name: "miss")
+
+      results = Tag.search_for("match")
+
+      expect(results).to eq [tag]
+    end
+  end
 end