44 lines
1.1 KiB
Elixir
44 lines
1.1 KiB
Elixir
defmodule Tuples do
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use Koans
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koan "tuples have a size" do
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assert tuple_size({:a, :b, :c}) == :__
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end
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koan "tuples can contain different things" do
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assert {:a, 1, "hi"} == :__
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end
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koan "you can pull out individual elements" do
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assert elem({:a, "hi"}, 1) == :__
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end
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koan "you can change individual elements of a tuple" do
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assert put_elem({:a, "hi"}, 1, "bye") == :__
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end
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koan "you can also simply extend a tuple with new stuff" do
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assert Tuple.insert_at({:a, "hi"}, 1, :new_thing) == :__
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end
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koan "...avoid falling of the edge" do
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assert_raise :__, fn -> Tuple.insert_at({:a, "hi"}, 12, :new_thing) end
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end
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koan "add things at the end" do
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assert Tuple.append({"Huey", "Dewey"}, "Louie") == :__
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end
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koan "or also remove them" do
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assert Tuple.delete_at({:this, :is, :not, :awesome}, 2) == :__
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end
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koan "you can't delete what you don't have" do
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assert_raise :__, fn -> Tuple.delete_at({:a, "hi"}, 12) end
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end
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koan "turn it into a list in case you need it" do
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assert Tuple.to_list({:this, :can, :be, :a, :list}) == :__
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end
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end
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