How to specify validates_uniqueness_of in rspec?

Question

How to do it? Could not find examples on the Internet ... (using rspec 2.5.0and rails 3.0.5)

Answer 1

Found it at shoulda-matchers: http://rubydoc.info/github/thoughtbot/shoulda-matchers/master/frames

Answer 2

before(:each) do
  @attr = { :bar => "foobar" }
end

it "should reject duplicate bar" do
  Foo.create!(@attr)
  duplicate_bar = Foo.new(@attr)
  duplicate_bar.should_not be_valid
end

Answer 3

, , save update

@widget.save
#untested, but this should be close
@widget.errors.full_messages.include?("validation message you are looking for").should be true

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