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Handle circular conversions (#51)

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Hakan Ensari 2024-11-21 14:45:44 +01:00
parent 9bd9e4dd95
commit 30cda9b048
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2 changed files with 12 additions and 1 deletions
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6
lib/query.rb
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@ -1,9 +1,13 @@
# frozen_string_literal: true
# FIXME: Validations are all over. Clean up!
class Query
class << self
def build(params)
new(params).to_h
query = new(params).to_h
raise ArgumentError, "bad currency pair" if [query[:base]] == query[:symbols]
query
end
end

7
spec/edge_cases_spec.rb
View File

@ -53,4 +53,11 @@ describe "the server" do
raise Sequel::Rollback
end
end
it "will not process circular conversions" do
get "/latest?from=EUR&to=EUR"
_(last_response).must_be(:unprocessable?)
get "/latest?from=USD&to=USD"
_(last_response).must_be(:unprocessable?)
end
end