RubyKoan: Assert Equality Koans

I am finishing up the last two Assert Equality Koans.  They are similar so I put them together on this blog.

  # Some ways of asserting equality are better than others.

  def test_a_better_way_of_asserting_equality
    expected_value = __
    actual_value = 1 + 1

    assert_equal expected_value, actual_value
  end

  # Sometimes we will ask you to fill in the values
  def test_fill_in_values
    assert_equal __, 1 + 1
  end

Solution
 def test_a_better_way_of_asserting_equality
    expected_value = 1 + 1
    actual_value = 1 + 1

    assert_equal expected_value, actual_value
  end

  # Sometimes we will ask you to fill in the values
  def test_fill_in_values
    assert_equal 2, 1 + 1
  end

These two are essentially the same.  When you look at the third line of the first Koan, it says  assert_equal expected_value, actual_value.

Assert_equal is asking the next two values that you pass in will be equal.  So you look at where the two variables are defined.

Expected_value, actual_value,

you see that the solution is to write a value to expected_value that is equal to actual value and the last line will equate to true.

There are two ways to set two values to equal each other.  Using the == operator and to call Assert_equal and pass two variables that are equal. (Assert_equal __ , __ )

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