Add specs for Gitlab::Emoji module

changelogs/unreleased/gitlab-emoji-specs.yml

+---
+title: Add RSpecs for Gitlab::Emoji module
+merge_request: 34980
+author: Rajendra Kadam
+type: fixed

spec/lib/gitlab/emoji_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Emoji do
+  let_it_be(:emojis) { Gemojione.index.instance_variable_get(:@emoji_by_name) }
+  let_it_be(:emojis_by_moji) { Gemojione.index.instance_variable_get(:@emoji_by_moji) }
+  let_it_be(:emoji_unicode_versions_by_name) { Gitlab::Json.parse(File.read(Rails.root.join('fixtures', 'emojis', 'emoji-unicode-version-map.json'))) }
+  let_it_be(:emojis_aliases) { Gitlab::Json.parse(File.read(Rails.root.join('fixtures', 'emojis', 'aliases.json'))) }
+
+  describe '.emojis' do
+    it 'returns emojis' do
+      current_emojis = described_class.emojis
+
+      expect(current_emojis).to eq(emojis)
+    end
+  end
+
+  describe '.emojis_by_moji' do
+    it 'return emojis by moji' do
+      current_emojis_by_moji = described_class.emojis_by_moji
+
+      expect(current_emojis_by_moji).to eq(emojis_by_moji)
+    end
+  end
+
+  describe '.emojis_unicodes' do
+    it 'returns emoji unicodes' do
+      emoji_keys = described_class.emojis_unicodes
+
+      expect(emoji_keys).to eq(emojis_by_moji.keys)
+    end
+  end
+
+  describe '.emojis_names' do
+    it 'returns emoji names' do
+      emoji_names = described_class.emojis_names
+
+      expect(emoji_names).to eq(emojis.keys)
+    end
+  end
+
+  describe '.emojis_aliases' do
+    it 'returns emoji aliases' do
+      emoji_aliases = described_class.emojis_aliases
+
+      expect(emoji_aliases).to eq(emojis_aliases)
+    end
+  end
+
+  describe '.emoji_filename' do
+    it 'returns emoji filename' do
+      # "100" => {"unicode"=>"1F4AF"...}
+      emoji_filename = described_class.emoji_filename('100')
+
+      expect(emoji_filename).to eq(emojis['100']['unicode'])
+    end
+  end
+
+  describe '.emoji_unicode_filename' do
+    it 'returns emoji unicode filename' do
+      emoji_unicode_filename = described_class.emoji_unicode_filename('💯')
+
+      expect(emoji_unicode_filename).to eq(emojis_by_moji['💯']['unicode'])
+    end
+  end
+
+  describe '.emoji_unicode_version' do
+    it 'returns emoji unicode version by name' do
+      emoji_unicode_version = described_class.emoji_unicode_version('100')
+
+      expect(emoji_unicode_version).to eq(emoji_unicode_versions_by_name['100'])
+    end
+  end
+
+  describe '.normalize_emoji_name' do
+    it 'returns same name if not found in aliases' do
+      emoji_name = described_class.normalize_emoji_name('random')
+
+      expect(emoji_name).to eq('random')
+    end
+
+    it 'returns name if name found in aliases' do
+      emoji_name = described_class.normalize_emoji_name('small_airplane')
+
+      expect(emoji_name).to eq(emojis_aliases['small_airplane'])
+    end
+  end
+
+  describe '.emoji_image_tag' do
+    it 'returns emoji image tag' do
+      emoji_image = described_class.emoji_image_tag('emoji_one', 'src_url')
+
+      expect(emoji_image).to eq( "<img class='emoji' title=':emoji_one:' alt=':emoji_one:' src='src_url' height='20' width='20' align='absmiddle' />")
+    end
+  end
+
+  describe '.gl_emoji_tag' do
+    it 'returns gl emoji tag if emoji is found' do
+      gl_tag = described_class.gl_emoji_tag('small_airplane')
+
+      expect(gl_tag).to eq('<gl-emoji title="small airplane" data-name="airplane_small" data-unicode-version="7.0">🛩</gl-emoji>')
+    end
+
+    it 'returns nil if emoji name is not found' do
+      gl_tag = described_class.gl_emoji_tag('random')
+
+      expect(gl_tag).to be_nil
+    end
+  end
+end