extract Admin::UsersController#index to its own query class

- move query to its own class
- use postgres ILIKE case insensitive
- removed duplicated list of trust levels

spec/components/admin_user_index_query_spec.rb

@@ -0,0 +1,114 @@
+require 'spec_helper'
+require_dependency 'admin_user_index_query'
+
+describe AdminUserIndexQuery do
+  describe "sql order" do
+    it "has default" do
+      query = ::AdminUserIndexQuery.new({})
+      expect(query.find_users_query.to_sql).to match("created_at DESC")
+    end
+
+    it "has active order" do
+      query = ::AdminUserIndexQuery.new({ query: "active" })
+      expect(query.find_users_query.to_sql).to match("last_seen_at")
+    end
+  end
+
+  describe "no users with trust level" do
+
+    TrustLevel.levels.each do |key, value|
+      it "#{key} returns no records" do
+        query = ::AdminUserIndexQuery.new({ query: key.to_s })
+        expect(query.find_users.count).to eq(0)
+      end
+    end
+
+  end
+
+  describe "users with trust level" do
+
+    TrustLevel.levels.each do |key, value|
+      it "finds user with trust #{key}" do
+        Fabricate(:user, trust_level: TrustLevel.levels[key])
+        query = ::AdminUserIndexQuery.new({ query: key.to_s })
+        expect(query.find_users.count).to eq(1)
+      end
+    end
+
+  end
+
+  describe "with a pending user" do
+
+    let!(:user) { Fabricate(:user, approved: false) }
+
+    it "finds the unapproved user" do
+      query = ::AdminUserIndexQuery.new({ query: 'pending' })
+      expect(query.find_users.count).to eq(1)
+    end
+
+  end
+
+  describe "with an admin user" do
+
+    let!(:user) { Fabricate(:user, admin: true) }
+
+    it "finds the admin" do
+      query = ::AdminUserIndexQuery.new({ query: 'admins' })
+      expect(query.find_users.count).to eq(1)
+    end
+
+  end
+
+  describe "with a moderator" do
+
+    let!(:user) { Fabricate(:user, moderator: true) }
+
+    it "finds the moderator" do
+      query = ::AdminUserIndexQuery.new({ query: 'moderators' })
+      expect(query.find_users.count).to eq(1)
+    end
+
+  end
+
+  describe "with a blocked user" do
+
+    let!(:user) { Fabricate(:user, blocked: true) }
+
+    it "finds the blocked user" do
+      query = ::AdminUserIndexQuery.new({ query: 'blocked' })
+      expect(query.find_users.count).to eq(1)
+    end
+
+  end
+
+  describe "filtering" do
+    context "by email fragment" do
+      before(:each) { Fabricate(:user, email: "test1@example.com") }
+
+      it "matches the email" do
+        query = ::AdminUserIndexQuery.new({ filter: "est1" })
+        expect(query.find_users.count).to eq(1)
+      end
+
+      it "matches the email using any case" do
+        query = ::AdminUserIndexQuery.new({ filter: "Test1" })
+        expect(query.find_users.count).to eq(1)
+      end
+    end
+
+    context "by username fragment" do
+      before(:each) { Fabricate(:user, username: "test_user_1") }
+
+      it "matches the username" do
+        query = ::AdminUserIndexQuery.new({ filter: "user" })
+        expect(query.find_users.count).to eq(1)
+      end
+
+      it "matches the username using any case" do
+        query = ::AdminUserIndexQuery.new({ filter: "User" })
+        expect(query.find_users.count).to eq(1)
+      end
+    end
+
+  end
+end