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Contents
# frozen_string_literal: true
RSpec.describe Necromancer::Conversions, '.register' do
it "allows to register converter" do
context = described_class.new
converter = double(:converter, {source: :string, target: :numeric})
expect(context.register(converter)).to eq(true)
expect(context[:string, :numeric]).to eq(converter)
end
it "allows to register converter with no source" do
context = described_class.new
converter = double(:converter, {source: nil, target: :numeric})
expect(context.register(converter)).to eq(true)
expect(context[:none, :numeric]).to eq(converter)
end
it "allows to register converter with no target" do
context = described_class.new
converter = double(:converter, {source: :string, target: nil})
expect(context.register(converter)).to eq(true)
expect(context[:string, :none]).to eq(converter)
end
it "allows to register anonymous converter" do
conversions = described_class.new
conversions.register do |c|
c.source= :string
c.target= :upcase
c.convert = proc { |value| value.to_s.upcase }
end
expect(conversions[:string, :upcase].call('magic')).to eq('MAGIC')
end
it "allows to register anonymous converter with class names" do
conversions = described_class.new
conversions.register do |c|
c.source= String
c.target= Array
c.convert = proc { |value| Array(value) }
end
expect(conversions[String, Array].call('magic')).to eq(['magic'])
end
it "allows to register custom converter" do
conversions = described_class.new
UpcaseConverter = Struct.new(:source, :target) do
def call(value)
value.to_s.upcase
end
end
upcase_converter = UpcaseConverter.new(:string, :upcase)
expect(conversions.register(upcase_converter)).to be(true)
expect(conversions[:string, :upcase].call('magic')).to eq('MAGIC')
end
end
Version data entries
7 entries across 7 versions & 2 rubygems