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48 lines
1.1 KiB
Ruby
48 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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require_relative 'helper'
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require 'currency'
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describe Currency do
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describe '.latest' do
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it 'returns latest rates' do
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data = Currency.latest.all
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data.count.must_be :>, 1
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end
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end
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describe '.between' do
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let(:day) do
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Date.parse('2010-01-01')
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end
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it 'returns everything up to a year' do
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interval = day..day + 365
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Currency.between(interval).map(:date).uniq.count.must_be :>, 52
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end
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it 'samples weekly over a year' do
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interval = day..day + 366
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Currency.between(interval).map(:date).uniq.count.must_be :<, 54
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end
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it 'sorts by date' do
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interval = day..day + 100
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dates = Currency.between(interval).map(:date)
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dates.must_equal dates.sort
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end
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end
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describe '.only' do
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it 'filters symbols' do
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iso_codes = %w[CAD USD]
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data = Currency.latest.only(*iso_codes).all
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data.map(&:iso_code).sort.must_equal iso_codes
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end
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it 'returns nothing if no matches' do
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Currency.only('FOO').all.must_be_empty
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end
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end
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end
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