require 'rails_helper' RSpec.describe Tag, type: :model do describe 'validations' do it 'invalid with #' do expect(Tag.new(name: '#hello_world')).to_not be_valid end it 'invalid with .' do expect(Tag.new(name: '.abcdef123')).to_not be_valid end it 'invalid with spaces' do expect(Tag.new(name: 'hello world')).to_not be_valid end it 'valid with aesthetic' do expect(Tag.new(name: 'aesthetic')).to be_valid end end describe 'HASHTAG_RE' do subject { Tag::HASHTAG_RE } it 'does not match URLs with anchors with non-hashtag characters' do expect(subject.match('Check this out https://medium.com/@alice/some-article#.abcdef123')).to be_nil end it 'does not match URLs with hashtag-like anchors' do expect(subject.match('https://en.wikipedia.org/wiki/Ghostbusters_(song)#Lawsuit')).to be_nil end it 'matches #aesthetic' do expect(subject.match('this is #aesthetic').to_s).to eq ' #aesthetic' end it 'matches digits at the start' do expect(subject.match('hello #3d').to_s).to eq ' #3d' end it 'matches digits in the middle' do expect(subject.match('hello #l33ts35k').to_s).to eq ' #l33ts35k' end it 'matches digits at the end' do expect(subject.match('hello #world2016').to_s).to eq ' #world2016' end it 'matches underscores at the beginning' do expect(subject.match('hello #_test').to_s).to eq ' #_test' end it 'matches underscores at the end' do expect(subject.match('hello #test_').to_s).to eq ' #test_' end it 'matches underscores in the middle' do expect(subject.match('hello #one_two_three').to_s).to eq ' #one_two_three' end it 'matches middle dots' do expect(subject.match('hello #one·two·three').to_s).to eq ' #one·two·three' end it 'matches ZWNJ' do expect(subject.match('just add #نرم‌افزار and').to_s).to eq ' #نرم‌افزار' end it 'does not match middle dots at the start' do expect(subject.match('hello #·one·two·three')).to be_nil end it 'does not match middle dots at the end' do expect(subject.match('hello #one·two·three·').to_s).to eq ' #one·two·three' end it 'does not match purely-numeric hashtags' do expect(subject.match('hello #0123456')).to be_nil end end describe '#to_param' do it 'returns name' do tag = Fabricate(:tag, name: 'foo') expect(tag.to_param).to eq 'foo' end end describe '.find_normalized' do it 'returns tag for a multibyte case-insensitive name' do upcase_string = 'abcABCabcABCやゆよ' downcase_string = 'abcabcabcabcやゆよ'; tag = Fabricate(:tag, name: HashtagNormalizer.new.normalize(downcase_string)) expect(Tag.find_normalized(upcase_string)).to eq tag end end describe '.matches_name' do it 'returns tags for multibyte case-insensitive names' do upcase_string = 'abcABCabcABCやゆよ' downcase_string = 'abcabcabcabcやゆよ'; tag = Fabricate(:tag, name: HashtagNormalizer.new.normalize(downcase_string)) expect(Tag.matches_name(upcase_string)).to eq [tag] end it 'uses the LIKE operator' do expect(Tag.matches_name('100%abc').to_sql).to eq %q[SELECT "tags".* FROM "tags" WHERE LOWER("tags"."name") LIKE LOWER('100abc%')] end end describe '.matching_name' do it 'returns tags for multibyte case-insensitive names' do upcase_string = 'abcABCabcABCやゆよ' downcase_string = 'abcabcabcabcやゆよ'; tag = Fabricate(:tag, name: HashtagNormalizer.new.normalize(downcase_string)) expect(Tag.matching_name(upcase_string)).to eq [tag] end end describe '.find_or_create_by_names' do it 'runs a passed block once per tag regardless of duplicates' do upcase_string = 'abcABCabcABCやゆよ' downcase_string = 'abcabcabcabcやゆよ'; count = 0 Tag.find_or_create_by_names([upcase_string, downcase_string]) do |tag| count += 1 end expect(count).to eq 1 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 it 'finds tag records in case insensitive' do tag = Fabricate(:tag, name: "MATCH") _miss_tag = Fabricate(:tag, name: "miss") results = Tag.search_for("match") expect(results).to eq [tag] end it 'finds the exact matching tag as the first item' do similar_tag = Fabricate(:tag, name: "matchlater", reviewed_at: Time.now.utc) tag = Fabricate(:tag, name: "match", reviewed_at: Time.now.utc) results = Tag.search_for("match") expect(results).to eq [tag, similar_tag] end end end