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# frozen_string_literal: true
require 'test/unit'
require 'arithmetic'
include Test::Unit::Assertions
assert_raise Arithmetic::ArithmeticError::IntegerOverflow do
Arithmetic.add 18_446_744_073_709_551_615, 1
end
assert_equal Arithmetic.add(2, 4), 6
assert_equal Arithmetic.add(4, 8), 12
assert_raise Arithmetic::ArithmeticError::IntegerOverflow do
Arithmetic.sub 0, 1
end
assert_equal Arithmetic.sub(4, 2), 2
assert_equal Arithmetic.sub(8, 4), 4
assert_equal Arithmetic.div(8, 4), 2
assert_raise Arithmetic::InternalError do
Arithmetic.div 8, 0
end
assert Arithmetic.equal(2, 2)
assert Arithmetic.equal(4, 4)
assert !Arithmetic.equal(2, 4)
assert !Arithmetic.equal(4, 8)