• Build a class that uses an initialize method
• Practice using an attribute accessor macro to make an attribute available to a class's methods
• Learn about Ruby's String.split method
• Learn about RegEx

You will write a program that, given a string of email addresses, parses that string into an array.

Your class, EmailAddressParser, should take the string of addresses on initialization. Instances should respond to a #parse instance method that parses the string into individual email addresses and returns them in an array.

Your class should be able to do this:

email_addresses = "[email protected], [email protected]"
parser = EmailAddressParser.new(email_addresses)

parser.parse
# => ["[email protected]", "[email protected]"]

Note: Your EmailAddressParser class should handle a list of email addresses that are separated by either spaces or comma-separated values (CSVs):

EmailAddressParser.new("[email protected], [email protected]").parse
# => ["[email protected]", "[email protected]"]

EmailAddressParser.new("[email protected] [email protected]").parse
# => ["[email protected]", "[email protected]"]

Additionally, the #parse method should only return unique addresses.

This lab is test-driven, so run the test suite to get started and use the test output to get the program working.

Hints: in order to get this lab passing, you will need to do some research into the following topics:

• Ruby's String.split method
• RegEx - you'll use this to specify which characters to split the string on
• Look at the Ruby documentation for the Array class. What method could be used to return an array of unique values?

• RegExr: Learn, Build, & Test RegEx
• Ruby Array class