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elixir-koans/lib/koans/02_arithmetic.ex
2016-04-10 19:14:35 +01:00

52 lines
974 B
Elixir

defmodule Arithmetic do
use Koans
koan "It can add numbers" do
assert 3 + :__ == 7
end
koan "It can substract numbers" do
assert 7 - 4 == :__
end
koan "It can multiply" do
assert 3 * 4 == :__
end
koan "Floats and integers can be equal..." do
assert 3.0 == :__
end
koan "...unless they are not precisely the same" do
assert 3.2 != :__
end
koan "It does floating point division" do
assert 5 / 2 == :__
end
koan "It does integer division" do
numerator = 5
denominator = 2
assert div(numerator, denominator) == :__
end
koan "It calculates the remainder of a division" do
numerator = 5
denominator = 2
assert rem(numerator, denominator) == :__
end
koan "It finds the maximum in a list" do
assert Enum.max([1,2,3,4]) == :__
end
koan "It finds the minimum in a list" do
assert Enum.min([1,2,3,4]) == :__
end
koan "It can compare numbers" do
assert 5 > :__
end
end