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22 lines
624 B
Ruby
22 lines
624 B
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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require_relative 'shared/difference'
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describe "Array#difference" do
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it_behaves_like :array_binary_difference, :difference
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it "returns a copy when called without any parameter" do
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x = [1, 2, 3, 2]
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x.difference.should == x
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x.difference.should_not equal x
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end
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it "does not return subclass instances for Array subclasses" do
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ArraySpecs::MyArray[1, 2, 3].difference.should be_an_instance_of(Array)
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end
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it "accepts multiple arguments" do
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x = [1, 2, 3, 1]
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x.difference([], [0, 1], [3, 4], [3]).should == [2]
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end
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end
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