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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Kernel#respond_to?" do
before :each do
@a = KernelSpecs::A.new
end
it "is a public method" do
Kernel.should have_public_instance_method(:respond_to?, false)
end
it "is only an instance method" do
Kernel.method(:respond_to?).owner.should == Kernel
end
it "returns false if the given method was undefined" do
@a.respond_to?(:undefed_method).should == false
@a.respond_to?("undefed_method").should == false
end
it "returns true if obj responds to the given public method" do
@a.respond_to?(:pub_method).should == true
@a.respond_to?("pub_method").should == true
end
it "throws a type error if argument can't be coerced into a Symbol" do
-> { @a.respond_to?(Object.new) }.should raise_error(TypeError, /is not a symbol nor a string/)
end
it "returns false if obj responds to the given protected method" do
@a.respond_to?(:protected_method).should == false
@a.respond_to?("protected_method").should == false
end
it "returns false if obj responds to the given private method" do
@a.respond_to?(:private_method).should == false
@a.respond_to?("private_method").should == false
end
it "returns true if obj responds to the given protected method (include_private = true)" do
@a.respond_to?(:protected_method, true).should == true
@a.respond_to?("protected_method", true).should == true
end
it "returns false if obj responds to the given protected method (include_private = false)" do
@a.respond_to?(:protected_method, false).should == false
@a.respond_to?("protected_method", false).should == false
end
it "returns false even if obj responds to the given private method (include_private = false)" do
@a.respond_to?(:private_method, false).should == false
@a.respond_to?("private_method", false).should == false
end
it "returns true if obj responds to the given private method (include_private = true)" do
@a.respond_to?(:private_method, true).should == true
@a.respond_to?("private_method", true).should == true
end
it "does not change method visibility when finding private method" do
KernelSpecs::VisibilityChange.respond_to?(:new, false).should == false
KernelSpecs::VisibilityChange.respond_to?(:new, true).should == true
-> { KernelSpecs::VisibilityChange.new }.should raise_error(NoMethodError)
end
it "indicates if an object responds to a particular message" do
class KernelSpecs::Foo; def bar; 'done'; end; end
KernelSpecs::Foo.new.respond_to?(:bar).should == true
KernelSpecs::Foo.new.respond_to?(:invalid_and_silly_method_name).should == false
end
end
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