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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Module#attr_accessor" do
it "creates a getter and setter for each given attribute name" do
c = Class.new do
attr_accessor :a, "b"
end
o = c.new
['a','b'].each do |x|
o.respond_to?(x).should == true
o.respond_to?("#{x}=").should == true
end
o.a = "a"
o.a.should == "a"
o.b = "b"
o.b.should == "b"
o.a = o.b = nil
o.send(:a=,"a")
o.send(:a).should == "a"
o.send(:b=, "b")
o.send(:b).should == "b"
end
it "not allows creating an attr_accessor on an immediate class" do
class TrueClass
attr_accessor :spec_attr_accessor
end
-> { true.spec_attr_accessor = "a" }.should raise_error(RuntimeError)
end
it "converts non string/symbol names to strings using to_str" do
(o = mock('test')).should_receive(:to_str).any_number_of_times.and_return("test")
c = Class.new do
attr_accessor o
end
c.new.respond_to?("test").should == true
c.new.respond_to?("test=").should == true
end
it "raises a TypeError when the given names can't be converted to strings using to_str" do
o = mock('o')
-> { Class.new { attr_accessor o } }.should raise_error(TypeError)
(o = mock('123')).should_receive(:to_str).and_return(123)
-> { Class.new { attr_accessor o } }.should raise_error(TypeError)
end
it "applies current visibility to methods created" do
c = Class.new do
protected
attr_accessor :foo
end
-> { c.new.foo }.should raise_error(NoMethodError)
-> { c.new.foo=1 }.should raise_error(NoMethodError)
end
it "is a public method" do
Module.should have_public_instance_method(:attr_accessor, false)
end
ruby_version_is ""..."3.0" do
it "returns nil" do
Class.new do
(attr_accessor :foo, 'bar').should == nil
end
end
end
ruby_version_is "3.0" do
it "returns an array of defined methods names as symbols" do
Class.new do
(attr_accessor :foo, 'bar').should == [:foo, :foo=, :bar, :bar=]
end
end
end
describe "on immediates" do
before :each do
class Fixnum
attr_accessor :foobar
end
end
after :each do
if Fixnum.method_defined?(:foobar)
Fixnum.send(:remove_method, :foobar)
end
if Fixnum.method_defined?(:foobar=)
Fixnum.send(:remove_method, :foobar=)
end
end
it "can read through the accessor" do
1.foobar.should be_nil
end
end
end
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