person_test.rb

# We require the minitest library
require 'minitest/autorun'

# CLASS DEFINITION
class Person
  attr_accessor :age, :name

  def say(name)
    "Hi, my name is test blablabla #{name}"
  end
end

# TESTS FOR THE PERSON CLASS
class PersonTest < Minitest::Test

  def setup
    @angela = Person.new
  end

  def test_say
    assert_match /Angela/, @angela.say("Angela")
    assert_kind_of String, @angela.say("Angela")
  end

  def test_age
    @angela.age = 20
    assert_equal 20, @angela.age
  end

  def test_respond_to_name
    assert_respond_to @angela, :name
    assert_respond_to @angela, :age
  end
end