if !System.get_env("EXERCISM_TEST_EXAMPLES") do
  Code.load_file("wordy.exs", __DIR__)
end

ExUnit.start()
ExUnit.configure(exclude: :pending, trace: true)

defmodule WordyTest do
  use ExUnit.Case

  test "addition" do
    assert Wordy.answer("What is 1 plus 1?") == 2
  end

  @tag :pending
  test "more addition" do
    assert Wordy.answer("What is 53 plus 2?") == 55
  end

  @tag :pending
  test "addition with negative numbers" do
    assert Wordy.answer("What is -1 plus -10?") == -11
  end

  @tag :pending
  test "large addition" do
    assert Wordy.answer("What is 123 plus 45678?") == 45801
  end

  @tag :pending
  test "subtraction" do
    assert Wordy.answer("What is 4 minus -12?") == 16
  end

  @tag :pending
  test "multiplication" do
    assert Wordy.answer("What is -3 multiplied by 25?") == -75
  end

  @tag :pending
  test "division" do
    assert Wordy.answer("What is 33 divided by -3?") == -11
  end

  @tag :pending
  test "multiple additions" do
    assert Wordy.answer("What is 1 plus 1 plus 1?") == 3
  end

  @tag :pending
  test "addition and subtraction" do
    assert Wordy.answer("What is 1 plus 5 minus -2?") == 8
  end

  @tag :pending
  test "multiple subtraction" do
    assert Wordy.answer("What is 20 minus 4 minus 13?") == 3
  end

  @tag :pending
  test "subtraction then addition" do
    assert Wordy.answer("What is 17 minus 6 plus 3?") == 14
  end

  @tag :pending
  test "multiple multiplication" do
    assert Wordy.answer("What is 2 multiplied by -2 multiplied by 3?") == -12
  end

  @tag :pending
  test "addition and multiplication" do
    assert Wordy.answer("What is -3 plus 7 multiplied by -2?") == -8
  end

  @tag :pending
  test "multiple division" do
    assert Wordy.answer("What is -12 divided by 2 divided by -3?") == 2
  end

  @tag :pending
  test "unknown operation" do
    assert_raise ArgumentError, fn ->
      Wordy.answer("What is 52 cubed?")
    end
  end

  @tag :pending
  test "Non math question" do
    assert_raise ArgumentError, fn ->
      Wordy.answer("Who is the President of the United States?")
    end
  end
end