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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Class.inherited" do
before :each do
ScratchPad.record nil
end
it "is invoked with the child Class when self is subclassed" do
begin
top = Class.new do
def self.inherited(cls)
$child_class = cls
end
end
child = Class.new(top)
$child_class.should == child
other_child = Class.new(top)
$child_class.should == other_child
ensure
$child_class = nil
end
end
it "is invoked only once per subclass" do
expected = [
[CoreClassSpecs::Inherited::A, CoreClassSpecs::Inherited::B],
[CoreClassSpecs::Inherited::B, CoreClassSpecs::Inherited::C],
]
CoreClassSpecs::Inherited::A::SUBCLASSES.should == expected
end
it "is called when marked as a private class method" do
a = Class.new do
def self.inherited(klass)
ScratchPad.record klass
end
end
a.private_class_method :inherited
ScratchPad.recorded.should == nil
b = Class.new(a)
ScratchPad.recorded.should == b
end
it "is called when marked as a protected class method" do
a = Class.new
class << a
def inherited(klass)
ScratchPad.record klass
end
protected :inherited
end
ScratchPad.recorded.should == nil
b = Class.new(a)
ScratchPad.recorded.should == b
end
it "is called when marked as a public class method" do
a = Class.new do
def self.inherited(klass)
ScratchPad.record klass
end
end
a.public_class_method :inherited
ScratchPad.recorded.should == nil
b = Class.new(a)
ScratchPad.recorded.should == b
end
it "is called by super from a method provided by an included module" do
ScratchPad.recorded.should == nil
e = Class.new(CoreClassSpecs::F)
ScratchPad.recorded.should == e
end
it "is called by super even when marked as a private class method" do
ScratchPad.recorded.should == nil
CoreClassSpecs::H.private_class_method :inherited
i = Class.new(CoreClassSpecs::H)
ScratchPad.recorded.should == i
end
it "will be invoked by child class regardless of visibility" do
top = Class.new do
class << self
def inherited(cls); end
end
end
class << top; private :inherited; end
lambda { Class.new(top) }.should_not raise_error
class << top; protected :inherited; end
lambda { Class.new(top) }.should_not raise_error
end
end
|
