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require "spec_helper"
require "hamster/vector"
describe Hamster::Vector do
describe "#compact" do
it "returns a new Vector with all nils removed" do
V[1, nil, 2, nil].compact.should eql(V[1, 2])
V[1, 2, 3].compact.should eql(V[1, 2, 3])
V[nil].compact.should eql(V.empty)
end
context "on an empty vector" do
it "returns self" do
V.empty.compact.should be(V.empty)
end
end
it "doesn't remove false" do
V[false].compact.should eql(V[false])
end
context "from a subclass" do
it "returns an instance of the subclass" do
subclass = Class.new(V)
instance = subclass[1, nil, 2]
instance.compact.class.should be(subclass)
end
end
end
end
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