feat(tresholds): Add serializers

app/serializers/v1/plan_serializer.rb

@@ -23,6 +23,7 @@ def serialize
       }
 
       payload.merge!(charges) if include?(:charges)
+      payload.merge!(progressive_billing_tresholds) if include?(:progressive_billing_tresholds)
       payload.merge!(taxes) if include?(:taxes)
       payload.merge!(minimum_commitment) if include?(:minimum_commitment) && model.minimum_commitment
 
@@ -40,6 +41,14 @@ def charges
       ).serialize
     end
 
+    def progressive_billing_tresholds
+      ::CollectionSerializer.new(
+        model.progressive_billing_tresholds,
+        ::V1::ProgressiveBillingTresholdSerializer,
+        collection_name: 'progressive_billing_tresholds'
+      ).serialize
+    end
+
     def minimum_commitment
       {
         minimum_commitment: V1::CommitmentSerializer.new(

app/serializers/v1/progressive_billing_treshold_serializer.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module V1
+  class ProgressiveBillingTresholdSerializer < ModelSerializer
+    def serialize
+      {
+        lago_id: model.id,
+        treshold_display_name: model.treshold_display_name,
+        amount_cents: model.amount_cents,
+        amount_currency: model.amount_currency,
+        recurring: model.recurring,
+        created_at: model.created_at.iso8601,
+        updated_at: model.updated_at.iso8601
+      }
+    end
+  end
+end

spec/serializers/v1/plan_serializer_spec.rb

@@ -3,14 +3,21 @@
 require 'rails_helper'
 
 RSpec.describe ::V1::PlanSerializer do
-  subject(:serializer) { described_class.new(plan, root_name: 'plan', includes: %i[charges taxes minimum_commitment]) }
+  subject(:serializer) do
+    described_class.new(
+      plan,
+      root_name: 'plan',
+      includes: %i[charges taxes minimum_commitment progressive_billing_tresholds]
+    )
+  end
 
   let(:plan) { create(:plan) }
   let(:customer) { create(:customer, organization: plan.organization) }
   let(:subscription) { create(:subscription, customer:, plan:) }
   let(:charge) { create(:standard_charge, plan:) }
+  let(:progressive_billing_treshold) { create(:progressive_billing_treshold, plan:) }
 
-  before { subscription && charge }
+  before { subscription && charge && progressive_billing_treshold }
 
   context 'when plan has one minimium commitment' do
     let(:commitment) { create(:commitment, plan:) }
@@ -48,6 +55,16 @@
         'lago_id' => charge.id
       )
 
+      expect(result['plan']['progressive_billing_tresholds'].first).to include(
+        'lago_id' => progressive_billing_treshold.id,
+        'treshold_display_name' => progressive_billing_treshold.treshold_display_name,
+        'amount_cents' => progressive_billing_treshold.amount_cents,
+        'amount_currency' => progressive_billing_treshold.amount_currency,
+        'recurring' => progressive_billing_treshold.recurring?,
+        'created_at' => progressive_billing_treshold.created_at.iso8601,
+        'updated_at' => progressive_billing_treshold.updated_at.iso8601
+      )
+
       expect(result['plan']['minimum_commitment']).to include(
         'lago_id' => commitment.id,
         'plan_code' => commitment.plan.code,
@@ -96,6 +113,16 @@
         'lago_id' => charge.id
       )
 
+      expect(result['plan']['progressive_billing_tresholds'].first).to include(
+        'lago_id' => progressive_billing_treshold.id,
+        'treshold_display_name' => progressive_billing_treshold.treshold_display_name,
+        'amount_cents' => progressive_billing_treshold.amount_cents,
+        'amount_currency' => progressive_billing_treshold.amount_currency,
+        'recurring' => progressive_billing_treshold.recurring?,
+        'created_at' => progressive_billing_treshold.created_at.iso8601,
+        'updated_at' => progressive_billing_treshold.updated_at.iso8601
+      )
+
       expect(result['plan']['minimum_commitment']).to be_nil
     end
   end

spec/serializers/v1/progressive_billing_treshold_serializer_spec.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe ::V1::ProgressiveBillingTresholdSerializer do
+  subject(:serializer) { described_class.new(progressive_billing_treshold, root_name: 'progressive_billing_treshold') }
+
+  let(:progressive_billing_treshold) { create(:progressive_billing_treshold) }
+
+  it 'serializes the object' do
+    result = JSON.parse(serializer.to_json)
+
+    aggregate_failures do
+      expect(result['progressive_billing_treshold']).to include(
+        'lago_id' => progressive_billing_treshold.id,
+        'treshold_display_name' => progressive_billing_treshold.treshold_display_name,
+        'amount_cents' => progressive_billing_treshold.amount_cents,
+        'amount_currency' => progressive_billing_treshold.amount_currency,
+        'recurring' => progressive_billing_treshold.recurring?,
+        'created_at' => progressive_billing_treshold.created_at.iso8601,
+        'updated_at' => progressive_billing_treshold.updated_at.iso8601
+      )
+    end
+  end
+end