Refactor query building out of server

lib/query.rb

@@ -1,6 +1,10 @@
 # frozen_string_literal: true
 
 class Query
+  def self.build(params)
+    new(params).to_h
+  end
+
   def initialize(params = {})
     @params = params
   end

lib/web/server.rb

@@ -32,6 +32,7 @@ set :static_cache_control, [:public, max_age: 300]
 helpers do
   def end_of_day_quote
     @end_of_day_quote ||= begin
+      query = Query.build(params)
       quote = Quote::EndOfDay.new(query)
       quote.perform
       halt 404 if quote.not_found?
@@ -42,6 +43,7 @@ helpers do
 
   def interval_quote
     @interval_quote ||= begin
+      query = Query.build(params)
       quote = Quote::Interval.new(query)
       quote.perform
       halt 404 if quote.not_found?
@@ -50,10 +52,6 @@ helpers do
     end
   end
 
-  def query
-    Query.new(params).to_h
-  end
-
   def json(data)
     json = Oj.dump(data, mode: :compat)
     callback = params['callback']

spec/query_spec.rb

@@ -4,6 +4,10 @@ require_relative 'helper'
 require 'query'
 
 describe Query do
+  it 'builds a query hash' do
+    Query.build(date: '2014-01-01').must_be_kind_of Hash
+  end
+
   it 'returns given amount' do
     query = Query.new(amount: '100')
     query.amount.must_equal 100.0