Lesson 9 OOP Solution

src/main/tv/codely/scala_intro_examples/lesson_09_oop/exercise_solutions/joel_coll_solution/Email.scala

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+package tv.codely.scala_intro_examples.lesson_09_oop.exercise_solutions.joel_coll_solution
+
+object Email {
+  def apply(emailStr: String): Email = {
+    if ("""(?=[^\s]+)(?=(\w+)@([\w\.]+\.[\w]+))""".r.findFirstIn(emailStr).isEmpty)
+      throw new IllegalArgumentException
+
+    val temp = emailStr.split('@')
+    Email(temp(0), temp(1))
+  }
+}
+
+final case class Email(local: String, domain: String) {
+  val email: String = local + "@" + domain
+}

src/test/tv/codely/scala_intro_examples/lesson_09_oop/exercise_solutions/joel_coll_solution/EmailSpec.scala

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+package tv.codely.scala_intro_examples.lesson_09_oop.exercise_solutions.joel_coll_solution
+
+import org.scalatest.{Matchers, WordSpec}
+
+final class EmailSpec extends WordSpec with Matchers {
+  private val localEmail     = "local"
+  private val domainEmail    = "domain.com"
+  private val badDomainEmail = "domaincom"
+  private val email          = localEmail + '@' + domainEmail
+  private val badEmail       = localEmail + '@' + badDomainEmail
+
+  "Email" should {
+    "return an instance when pass local and domain params" in {
+      val emailInstance = Email(local = localEmail, domain = domainEmail)
+      emailInstance.email shouldBe email
+    }
+    "return an instance when pass and email" in {
+      val emailInstance = Email(emailStr = email)
+      emailInstance.email shouldBe email
+    }
+    "throw an exception when pass a bad email" in {
+      intercept[IllegalArgumentException] {
+        Email(emailStr = badEmail)
+      }
+    }
+  }
+}