product_mock.rb

module Liquid
  class ProductMock
    attr_accessor :id, :collections, :variants, :created_at, :tags
    def initialize(id: 123, collections: [], variants:[], created_at: Date.yesterday, tags:[])
      @collections = []
      @variants = variants
      @created_at = created_at
      @tags = tags
    end

    def price_min
      @variants.map { |e| e.price }.min
    end

    def price_max
      @variants.map { |e| e.price }.max
    end

    def to_liquid
      {
        'id' => @id,
        'collections' => @collections,
        'variants' => @variants,
        'created_at' => @created_at,
        'tags' => @tags,
        'price_min' => price_min,
        'price_max' => price_max,
      }
    end
  end
end