delivered_to, clients, tickets, servers sont forcément des tableaux

app/models/email.rb

@@ -35,6 +35,31 @@ class Email
     id.present?
   end
 
+  # def to=(value)
+  #   value=Array(value)
+  #   super
+  # end
+
+  def delivered_to=(value)
+    value=Array(value)
+    super
+  end
+
+  def clients=(value)
+    value=Array(value)
+    super
+  end
+
+  def tickets=(value)
+    value=Array(value)
+    super
+  end
+
+  def servers=(value)
+    value=Array(value)
+    super
+  end
+
   def cron?
     cron
   end

test/services/email_importer_test.rb

@@ -43,7 +43,7 @@ class EmailImporterTest < ActiveSupport::TestCase
   test "single delivered-to" do
     email = email_from_eml("delivered_to_single.eml")
 
-    expected = "delivered-to-1@example.com"
+    expected = ["delivered-to-1@example.com"]
     actual   = email.delivered_to
 
     assert_equal expected, actual
@@ -70,7 +70,7 @@ class EmailImporterTest < ActiveSupport::TestCase
   test "single ticket" do
     email = email_from_eml("tickets_single.eml")
 
-    expected = "49123"
+    expected = ["49123"]
     actual   = email.tickets
 
     assert_equal expected, actual
@@ -88,7 +88,7 @@ class EmailImporterTest < ActiveSupport::TestCase
   test "single client" do
     email = email_from_eml("clients_single.eml")
 
-    expected = "42QUUX4567"
+    expected = ["42QUUX4567"]
     actual   = email.clients
 
     assert_equal expected, actual