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require "spec_helper"
require "hamster/vector"
describe Hamster::Vector do
let(:v) { V[1, 2, V[3, 4]] }
describe "#dig" do
it "returns value at the index with one argument" do
expect(v.dig(0)).to eq(1)
end
it "returns value at index in nested arrays" do
expect(v.dig(2, 0)).to eq(3)
end
it "returns nil when indexing deeper than possible" do
expect(v.dig(0, 0)).to eq(nil)
end
it "returns nil if you index past the end of an array" do
expect(v.dig(5)).to eq(nil)
end
it "raises a type error when indexing with a key arrays don't understand" do
expect{ v.dig(:foo) }.to raise_error(ArgumentError)
end
end
end
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