82 lines
3 KiB
Ruby
82 lines
3 KiB
Ruby
# frozen_string_literal: true
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require_relative "../../helper"
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require "provider/adapters/cbr"
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class Provider < Sequel::Model(:providers)
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module Adapters
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describe CBR do
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before do
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VCR.insert_cassette("cbr", match_requests_on: [:method, :uri], allow_playback_repeats: true)
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end
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after { VCR.eject_cassette }
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let(:adapter) { CBR.new }
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it "fetches rates since a date" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 5))
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_(dataset).wont_be_empty
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end
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it "fetches multiple currencies per date" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 5))
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dates = dataset.map { |r| r[:date] }.uniq
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sample = dataset.select { |r| r[:date] == dates.first }
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_(sample.size).must_be(:>, 1)
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end
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it "fetches foreign currency as base and RUB as quote" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 5))
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usd = dataset.find { |r| r[:base] == "USD" && r[:quote] == "RUB" }
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_(usd).wont_be_nil
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_(usd[:rate]).must_be(:>, 50)
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end
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it "fetches XAU, XAG, XPT and XPD against RUB" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 5))
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metals = dataset.select { |r| CBR::METAL_CODES.value?(r[:base]) }
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bases = metals.map { |r| r[:base] }.uniq
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_(bases).must_include("XAU")
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_(bases).must_include("XAG")
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_(bases).must_include("XPT")
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_(bases).must_include("XPD")
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metals.each { |r| _(r[:quote]).must_equal("RUB") }
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end
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it "normalizes metal rates from RUB-per-gram to RUB-per-troy-ounce" do
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xml = <<~XML
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<?xml version="1.0" encoding="windows-1251"?>
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<Metall FromDate="20260424" ToDate="20260424" name="Precious metals quotations">
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<Record Date="24.04.2026" Code="1"><Buy>11409,47</Buy><Sell>11409,47</Sell></Record>
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<Record Date="24.04.2026" Code="2"><Buy>187,82</Buy><Sell>187,82</Sell></Record>
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<Record Date="24.04.2026" Code="3"><Buy>5009,28</Buy><Sell>5009,28</Sell></Record>
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<Record Date="24.04.2026" Code="4"><Buy>3750,95</Buy><Sell>3750,95</Sell></Record>
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</Metall>
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XML
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records = adapter.parse_metals(xml)
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xau = records.find { |r| r[:base] == "XAU" }
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_(xau[:rate]).must_be_close_to(11409.47 * Adapter::GRAMS_PER_TROY_OUNCE, 0.0001)
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_(records.size).must_equal(4)
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end
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it "skips weekend metal records" do
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xml = <<~XML
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<?xml version="1.0" encoding="windows-1251"?>
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<Metall FromDate="20260425" ToDate="20260426" name="Precious metals quotations">
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<Record Date="25.04.2026" Code="1"><Buy>11409,47</Buy><Sell>11409,47</Sell></Record>
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<Record Date="26.04.2026" Code="1"><Buy>11409,47</Buy><Sell>11409,47</Sell></Record>
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</Metall>
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XML
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_(adapter.parse_metals(xml)).must_be_empty
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end
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end
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end
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end
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