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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Module#method_defined?" do
it "returns true if a public or private method with the given name is defined in self, self's ancestors or one of self's included modules" do
# Defined in Child
ModuleSpecs::Child.method_defined?(:public_child).should == true
ModuleSpecs::Child.method_defined?("private_child").should == false
ModuleSpecs::Child.method_defined?(:accessor_method).should == true
# Defined in Parent
ModuleSpecs::Child.method_defined?("public_parent").should == true
ModuleSpecs::Child.method_defined?(:private_parent).should == false
# Defined in Module
ModuleSpecs::Child.method_defined?(:public_module).should == true
ModuleSpecs::Child.method_defined?(:protected_module).should == true
ModuleSpecs::Child.method_defined?(:private_module).should == false
# Defined in SuperModule
ModuleSpecs::Child.method_defined?(:public_super_module).should == true
ModuleSpecs::Child.method_defined?(:protected_super_module).should == true
ModuleSpecs::Child.method_defined?(:private_super_module).should == false
end
# unlike alias_method, module_function, public, and friends,
it "does not search Object or Kernel when called on a module" do
m = Module.new
m.method_defined?(:module_specs_public_method_on_kernel).should be_false
end
it "raises a TypeError when the given object is not a string/symbol/fixnum" do
c = Class.new
o = mock('123')
lambda { c.method_defined?(o) }.should raise_error(TypeError)
o.should_receive(:to_str).and_return(123)
lambda { c.method_defined?(o) }.should raise_error(TypeError)
end
it "converts the given name to a string using to_str" do
c = Class.new { def test(); end }
(o = mock('test')).should_receive(:to_str).and_return("test")
c.method_defined?(o).should == true
end
end
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