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describe :set_intersection, :shared => true do
before :each do
@set = Set[:a, :b, :c]
end
it "returns a new Set containing only elements shared by self and the passed Enumerable" do
@set.send(@method, Set[:b, :c, :d, :e]).should == Set[:b, :c]
@set.send(@method, [:b, :c, :d]).should == Set[:b, :c]
end
it "raises an ArgumentError when passed a non-Enumerable" do
lambda { @set.send(@method, 1) }.should raise_error(ArgumentError)
lambda { @set.send(@method, Object.new) }.should raise_error(ArgumentError)
end
end
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