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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
module ModuleSpecs
class NoInheritance
def method_to_remove; 1; end
remove_method :method_to_remove
end
class Parent
def method_to_remove; 1; end
end
class Child < Parent
def method_to_remove; 2; end
remove_method :method_to_remove
end
class First
def method_to_remove; 1; end
end
class Second < First
def method_to_remove; 2; end
end
end
describe "Module#remove_method" do
it "removes the method from a class" do
x = ModuleSpecs::NoInheritance.new
x.respond_to?(:method_to_remove).should == false
end
it "removes method from subclass, but not parent" do
x = ModuleSpecs::Child.new
x.respond_to?(:method_to_remove).should == true
x.method_to_remove.should == 1
end
it "raises a NameError when attempting to remove method further up the inheritance tree" do
lambda {
class Third < ModuleSpecs::Second
remove_method :method_to_remove
end
}.should raise_error(NameError)
end
it "raises a NameError when attempting to remove a missing method" do
lambda {
class Third < ModuleSpecs::Second
remove_method :blah
end
}.should raise_error(NameError)
end
ruby_version_is ""..."1.9" do
it "raises TypeError when frozen" do
c = Class.new { def method_to_remove; end }
c.freeze
lambda { c.send(:remove_method, :method_to_remove) }.should raise_error(TypeError)
end
end
ruby_version_is "1.9" do
it "raises RuntimeError when frozen" do
c = Class.new { def method_to_remove; end }
c.freeze
lambda { c.send(:remove_method, :method_to_remove) }.should raise_error(RuntimeError)
end
end
end
|
