respond_to_spec.rb

describe "should respond_to(message1, message2)" do
  
  it "passes if target responds to both messages" do
    Object.new.should respond_to('methods', 'inspect')
  end
  
  it "fails if target does not respond to first message" do
    lambda {
      Object.new.should respond_to('method_one', 'inspect')
    }.should fail_with(/expected #<Object:.*> to respond to "method_one"/)
  end
  
  it "fails if target does not respond to second message" do
    lambda {
      Object.new.should respond_to('inspect', 'method_one')
    }.should fail_with(/expected #<Object:.*> to respond to "method_one"/)
  end
  
  it "fails if target does not respond to either message" do
    lambda {
      Object.new.should respond_to('method_one', 'method_two')
    }.should fail_with(/expected #<Object:.*> to respond to "method_one", "method_two"/)
  end
end