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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/iterable_and_tolerating_size_increasing'
describe "Array#drop_while" do
@value_to_return = -> _ { true }
it_behaves_like :array_iterable_and_tolerating_size_increasing, :drop_while
it "removes elements from the start of the array while the block evaluates to true" do
[1, 2, 3, 4].drop_while { |n| n < 4 }.should == [4]
end
it "removes elements from the start of the array until the block returns nil" do
[1, 2, 3, nil, 5].drop_while { |n| n }.should == [nil, 5]
end
it "removes elements from the start of the array until the block returns false" do
[1, 2, 3, false, 5].drop_while { |n| n }.should == [false, 5]
end
ruby_version_is ''...'3.0' do
it 'returns a subclass instance for Array subclasses' do
ArraySpecs::MyArray[1, 2, 3, 4, 5].drop_while { |n| n < 4 }.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].drop_while { |n| n < 4 }.should be_an_instance_of(Array)
end
end
end
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