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########################################################################
# facade_spec.rb
#
# Specs for the Facade module. This test suite should be run via the
# the 'rake spec' task.
########################################################################
require 'rspec'
require 'facade'
RSpec.describe Facade do
let(:facade) do
module FooModule
def testme(str); str; end
end
Class.new(String) do |klass|
klass.extend Facade
facade File, :basename, 'dirname'
facade Dir
facade FooModule
def blockdev?
'test'
end
end
end
let(:string) { facade.new('/home/whatever') }
example "facade module has expected version set and it's frozen" do
expect(Facade::FACADE_VERSION).to eq('1.2.1')
expect(Facade::FACADE_VERSION).to be_frozen
end
example "facade instance responds only to specified singleton methods" do
expect(string).to respond_to(:basename)
expect(string).to respond_to(:dirname)
expect{ string.executable? }.to raise_error(NoMethodError)
expect{ string.chardev? }.to raise_error(NoMethodError)
end
example "File singleton methods are implemented as instance methods and return the expected value" do
expect(string.basename).to eq('whatever')
expect(string.dirname).to eq('/home')
end
example "all Dir singleton methods are implemented as instance methods" do
expect(string).to respond_to(:pwd)
expect(string).to respond_to(:entries)
end
example "facade does not clobber predefined methods" do
expect(string).to respond_to(:blockdev?)
expect(string.blockdev?).to eq('test')
end
example "module_methods" do
expect(string).to respond_to(:testme)
expect(string.testme).to eq('/home/whatever')
end
end
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