spec/elastic_apm/fields_spec.rb

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# frozen_string_literal: true

require "spec_helper"

module ElasticAPM
  RSpec.describe Fields do
    class MyObject
      include Fields

      field :name
      field :address
      field :online, default: true
    end

    it "adds an initializer and accessors" do
      subject = MyObject.new(name: "thing")
      expect(subject.name).to(eq("thing"))
    end

    it "knows its fields" do
      expect(MyObject.schema.keys).to eq(%i[name address online])
    end

    describe "with default value" do
      it 'sets value to default' do
        subject = MyObject.new
        expect(subject.online).to be true
      end

      it 'is overridable' do
        subject = MyObject.new(online: false)
        expect(subject.online).to be false
      end
    end

    describe "#empty?" do
      it "is when missing all values" do
        subject = MyObject.new
        subject.online = nil
        expect(subject).to be_empty
      end

      it "isn't when all fields set" do
        subject = MyObject.new(name: 'a', address: 'b')
        expect(subject).to_not be_empty
      end
    end

    describe "#to_h" do
      it "serializes into a hash" do
        subject = MyObject.new(name: 'a', address: 'b')
        expect(subject.to_h).to match(
          name: 'a',
          address: 'b',
          online: true
        )
      end
    end
  end
end