frankfurter/spec/provider/adapters/cbc_spec.rb

# frozen_string_literal: true

require_relative "../../helper"
require "provider/adapters/cbc"

class Provider < Sequel::Model(:providers)
  module Adapters
    describe CBC do
      before do
        VCR.insert_cassette("cbc", match_requests_on: [:method, :host, :path])
      end

      after { VCR.eject_cassette }

      let(:adapter) { CBC.new }

      it "fetches rates with date range" do
        dataset = adapter.fetch(after: Date.new(2026, 2, 1), upto: Date.new(2026, 2, 5))

        _(dataset).wont_be_empty
      end

      it "fetches multiple currencies per date" do
        dataset = adapter.fetch(after: Date.new(2026, 2, 1), upto: Date.new(2026, 2, 5))
        dates = dataset.map { |r| r[:date] }.uniq
        sample = dataset.select { |r| r[:date] == dates.first }

        _(sample.size).must_be(:>, 1)
      end

      it "parses rows with correct base and quote for X/USD convention" do
        rows = [
          [
            "20260201",
            "32.500",
            "150.25",
            "1.2500",
            "7.8000",
            "1200.0",
            "1.3500",
            "1.3200",
            "7.2000",
            "0.6500",
            "15800.0",
            "33.500",
            "4.4000",
            "56.000",
            "1.0500",
            "-",
            "-",
            "-",
            "25000.0",
          ],
        ]

        records = adapter.parse(rows)
        twd = records.find { |r| r[:quote] == "TWD" }

        _(twd).wont_be_nil
        _(twd[:base]).must_equal("USD")
        _(twd[:rate]).must_equal(32.5)
        _(twd[:date]).must_equal(Date.new(2026, 2, 1))
      end

      it "parses rows with correct base and quote for USD/X convention" do
        rows = [
          [
            "20260201",
            "32.500",
            "150.25",
            "1.2500",
            "7.8000",
            "1200.0",
            "1.3500",
            "1.3200",
            "7.2000",
            "0.6500",
            "15800.0",
            "33.500",
            "4.4000",
            "56.000",
            "1.0500",
            "-",
            "-",
            "-",
            "25000.0",
          ],
        ]

        records = adapter.parse(rows)
        gbp = records.find { |r| r[:base] == "GBP" }
        aud = records.find { |r| r[:base] == "AUD" }
        eur = records.find { |r| r[:base] == "EUR" }

        _(gbp[:quote]).must_equal("USD")
        _(gbp[:rate]).must_equal(1.25)
        _(aud[:quote]).must_equal("USD")
        _(aud[:rate]).must_equal(0.65)
        _(eur[:quote]).must_equal("USD")
        _(eur[:rate]).must_equal(1.05)
      end

      it "parses all active currency columns" do
        rows = [
          [
            "20260201",
            "32.500",
            "150.25",
            "1.2500",
            "7.8000",
            "1200.0",
            "1.3500",
            "1.3200",
            "7.2000",
            "0.6500",
            "15800.0",
            "33.500",
            "4.4000",
            "56.000",
            "1.0500",
            "-",
            "-",
            "-",
            "25000.0",
          ],
        ]

        records = adapter.parse(rows)

        _(records.length).must_equal(15)
      end

      it "skips missing values marked as dash" do
        rows = [
          [
            "19930105",
            "25.405",
            "125.25",
            "1.5499",
            "7.7427",
            "788.2",
            "1.2766",
            "1.6560",
            "7.7200",
            "0.6732",
            "2048.0",
            "25.550",
            "2.5908",
            "-",
            "-",
            "1.6255",
            "5.5425",
            "1.8258",
            "-",
          ],
        ]

        records = adapter.parse(rows)

        # PHP (col 13), EUR (col 14) are "-", VND (col 18) are "-", DEM/FRF/NLG excluded
        _(records.none? { |r| r[:quote] == "PHP" }).must_equal(true)
        _(records.none? { |r| r[:base] == "EUR" }).must_equal(true)
        _(records.none? { |r| r[:quote] == "VND" }).must_equal(true)
      end

      it "parses historical currency columns (DEM, FRF, NLG)" do
        rows = [
          [
            "19930105",
            "25.405",
            "125.25",
            "1.5499",
            "7.7427",
            "788.2",
            "1.2766",
            "1.6560",
            "7.7200",
            "0.6732",
            "2048.0",
            "25.550",
            "2.5908",
            "-",
            "-",
            "1.6255",
            "5.5425",
            "1.8258",
            "-",
          ],
        ]

        records = adapter.parse(rows)
        dem = records.find { |r| r[:quote] == "DEM" }
        frf = records.find { |r| r[:quote] == "FRF" }
        nlg = records.find { |r| r[:quote] == "NLG" }

        _(dem).wont_be_nil
        _(dem[:base]).must_equal("USD")
        _(dem[:rate]).must_equal(1.6255)
        _(frf).wont_be_nil
        _(frf[:base]).must_equal("USD")
        _(frf[:rate]).must_equal(5.5425)
        _(nlg).wont_be_nil
        _(nlg[:base]).must_equal("USD")
        _(nlg[:rate]).must_equal(1.8258)
      end

      it "filters by date range" do
        rows = [
          ["20260201", "32.500", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-"],
          ["20260205", "32.600", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-"],
          ["20260210", "32.700", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", "-"],
        ]

        records = adapter.parse(rows, Date.new(2026, 2, 3), Date.new(2026, 2, 8))

        _(records.length).must_equal(1)
        _(records.first[:date]).must_equal(Date.new(2026, 2, 5))
      end
    end
  end
end