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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Array#take" do
it "returns the first specified number of elements" do
[1, 2, 3].take(2).should == [1, 2]
end
it "returns all elements when the argument is greater than the Array size" do
[1, 2].take(99).should == [1, 2]
end
it "returns all elements when the argument is less than the Array size" do
[1, 2].take(4).should == [1, 2]
end
it "returns an empty Array when passed zero" do
[1].take(0).should == []
end
it "returns an empty Array when called on an empty Array" do
[].take(3).should == []
end
it "raises an ArgumentError when the argument is negative" do
->{ [1].take(-3) }.should raise_error(ArgumentError)
end
ruby_version_is ''...'3.0' do
it 'returns a subclass instance for Array subclasses' do
ArraySpecs::MyArray[1, 2, 3, 4, 5].take(1).should be_an_instance_of(ArraySpecs::MyArray)
end
end
ruby_version_is '3.0' do
it 'returns a Array instance for Array subclasses' do
ArraySpecs::MyArray[1, 2, 3, 4, 5].take(1).should be_an_instance_of(Array)
end
end
end
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