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7ae25dd6df
* Implement Synth as an exchange rate provider * Add assertions to provider interface test * Assert the correct provider error is raised * Remove unnecessary parens
42 lines
1.4 KiB
Ruby
42 lines
1.4 KiB
Ruby
require "test_helper"
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class ExchangeRateTest < ActiveSupport::TestCase
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test "find rate in db" do
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assert_equal exchange_rates(:day_29_ago_eur_to_usd),
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ExchangeRate.find_rate_or_fetch(from: "EUR", to: "USD", date: 29.days.ago.to_date)
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end
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test "fetch rate from provider when it's not found in db" do
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ExchangeRate
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.expects(:fetch_rate_from_provider)
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.returns(ExchangeRate.new(base_currency: "USD", converted_currency: "MXN", rate: 1.0, date: Date.current))
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ExchangeRate.find_rate_or_fetch from: "USD", to: "MXN", date: Date.current
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end
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test "provided rates are saved to the db" do
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VCR.use_cassette "synth_exchange_rate" do
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assert_difference "ExchangeRate.count", 1 do
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ExchangeRate.find_rate_or_fetch from: "USD", to: "MXN", date: Date.current
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end
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end
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end
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test "retrying, then raising on provider error" do
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Faraday.expects(:get).returns(OpenStruct.new(success?: false)).times(3)
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error = assert_raises Provider::Base::ProviderError do
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ExchangeRate.find_rate_or_fetch from: "USD", to: "MXN", date: Date.current
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end
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assert_match "Failed to fetch exchange rate from Provider::Synth", error.message
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end
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test "retrying, then raising on network error" do
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Faraday.expects(:get).raises(Faraday::TimeoutError).times(3)
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assert_raises Faraday::TimeoutError do
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ExchangeRate.find_rate_or_fetch from: "USD", to: "MXN", date: Date.current
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end
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end
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end
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