98 lines
2.8 KiB
Ruby
98 lines
2.8 KiB
Ruby
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# frozen_string_literal: true
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require_relative "../../helper"
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require "provider/adapters/mas"
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class Provider < Sequel::Model(:providers)
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module Adapters
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describe MAS do
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before do
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VCR.insert_cassette("mas", match_requests_on: [:method, :host])
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end
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after { VCR.eject_cassette }
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let(:adapter) { MAS.new }
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it "fetches rates" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 31))
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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, 31))
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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 "normalizes per-100-unit rates" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 31))
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jpy = dataset.find { |r| r[:base] == "JPY" }
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_(jpy).wont_be_nil
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_(jpy[:rate]).must_be(:<, 1)
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end
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it "includes per-unit currencies" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 31))
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eur = dataset.find { |r| r[:base] == "EUR" }
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_(eur).wont_be_nil
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_(eur[:rate]).must_be(:>, 1)
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end
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it "respects date boundaries" do
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dataset = adapter.fetch(after: Date.new(2026, 3, 1), upto: Date.new(2026, 3, 10))
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_(dataset.any? { |r| r[:date] > Date.new(2026, 3, 10) }).must_equal(false)
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_(dataset.any? { |r| r[:date] <= Date.new(2026, 3, 10) }).must_equal(true)
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end
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it "parses CSV data" do
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csv = <<~CSV
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MAS: Financial Database - Exchange Rates
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Exchange Rates (Daily)
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Mar 2026 to Mar 2026
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End of Period,,,S$ Per Unit of Euro,S$ Per Unit of US Dollar,S$ Per 100 Units of Japanese Yen,S$ Per 100 Units of Malaysian Ringgit
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2026,Mar,02,1.4940,1.2674,0.8107,32.45
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,,03,1.4877,1.2726,0.8091,32.42
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CSV
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records = adapter.parse(csv)
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_(records.length).must_equal(8)
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eur = records.find { |r| r[:base] == "EUR" && r[:date] == Date.new(2026, 3, 2) }
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_(eur[:rate]).must_be_close_to(1.4940, 0.0001)
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_(eur[:quote]).must_equal("SGD")
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jpy = records.find { |r| r[:base] == "JPY" && r[:date] == Date.new(2026, 3, 2) }
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_(jpy[:rate]).must_be_close_to(0.008107, 0.00001)
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end
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it "skips empty values" do
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csv = <<~CSV
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End of Period,,,S$ Per Unit of Euro
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2026,Mar,02,
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,,03,1.4877
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CSV
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records = adapter.parse(csv)
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_(records.length).must_equal(1)
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end
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it "handles empty CSV" do
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records = adapter.parse("")
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_(records).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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