1 files changed, 37 insertions, 0 deletions
diff --git a/spec/support/helpers/email_helpers.rb b/spec/support/helpers/email_helpers.rb
new file mode 100644
index 00000000000..1fb8252459f
--- /dev/null
+++ b/spec/support/helpers/email_helpers.rb
@@ -0,0 +1,37 @@
+module EmailHelpers
+  def sent_to_user(user, recipients: email_recipients)
+    recipients.count { |to| to == user.notification_email }
+  end
+
+  def reset_delivered_emails!
+    ActionMailer::Base.deliveries.clear
+  end
+
+  def should_only_email(*users, kind: :to)
+    recipients = email_recipients(kind: kind)
+
+    users.each { |user| should_email(user, recipients: recipients) }
+
+    expect(recipients.count).to eq(users.count)
+  end
+
+  def should_email(user, times: 1, recipients: email_recipients)
+    expect(sent_to_user(user, recipients: recipients)).to eq(times)
+  end
+
+  def should_not_email(user, recipients: email_recipients)
+    should_email(user, times: 0, recipients: recipients)
+  end
+
+  def should_not_email_anyone
+    expect(ActionMailer::Base.deliveries).to be_empty
+  end
+
+  def email_recipients(kind: :to)
+    ActionMailer::Base.deliveries.flat_map(&kind)
+  end
+
+  def find_email_for(user)
+    ActionMailer::Base.deliveries.find { |d| d.to.include?(user.notification_email) }
+  end
+end