adolfont/calculator_tdd.md Secret

## calculator_tdd.md

      
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              calculator_tdd.md
            
          
    Calculator with TDD

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Code

defmodule Calculator do
  def add(a, b) do
    a + b
  end

  def multiply(a, b) do
    a * b
  end
end
Tests

ExUnit.start(auto_run: false)

defmodule CalculatorTest do
  use ExUnit.Case, async: false

  describe "Testing the addition function" do
    test "2 plus 3 is 5" do
      assert Calculator.add(2, 3) == 5
    end

    test "2 plus 2 is 4" do
      assert Calculator.add(2, 2) == 4
    end
  end

  describe "Testing the multiplication function" do
    test "2 times 3 is 6" do
      assert Calculator.multiply(2, 3) == 6
    end

    test "2 times 20 is 40" do
      assert Calculator.multiply(2, 20) == 40
    end
  end
end

ExUnit.run()