example_3.rb

describe UserSearch do
  describe "#results" do
    it "returns all Users" do
      user = User.create!
      expect(described_class.new.results).to eq([user])
    end

    context "a :name option is provided" do
      it "returns Users with a matching first name" do
        user = User.create!(first_name: "William")
        search = described_class.new(name: "wi")
        expect(search.results).to eq([user])
      end

      it "returns Users with a matching last name" do
        user = User.create!(last_name: "Adama")
        search = described_class.new(name: "ad")
        expect(search.results).to eq([user])
      end

      it "excludes Users lacking a matching name" do
        user = User.create!(last_name: "Thrace")
        search = described_class.new(name: "ad")
        expect(search.results).to be_empty
      end
    end

    context "an :email option is provided" do
      it "returns Users with a matching email" do
        user = User.create!(email: "adama@gmail.com")
        search = described_class.new(email: "aDaMa@gMaIl")
        expect(search.results).to eq([user])
      end

      it "excludes Users lacking a matching email" do
        user = User.create!(email: "thrace@hotmail.com")
        search = described_class.new(email: "adama@gmail")
        expect(search.results).to be_empty
      end
    end

    it "combines scopes" do
      user_1 = User.create!(first_name: "Starbuck", email: "thrace@hotmail.com")
      user_2 = User.create!(first_name: "Kara",     email: "thrace@hotmail.com")
      user_3 = User.create!(first_name: "Kara",     email: "thrace-22@msn.com")

      search = described_class.new(name: "Kara", email: "thrace@hotmail.com")
      expect(search.results).to eq([user_2])
    end
  end
end