move mock mailer into email package

email/mockMailer.go

@@ -0,0 +1,13 @@
+package email
+
+// MockMailer is a mock Mailer
+type MockMailer struct {
+	LoginTokenFn      func(name, email string, c ContentLoginToken) error
+	LoginTokenInvoked bool
+}
+
+// LoginToken is a mock for LoginToken
+func (s *MockMailer) LoginToken(n, e string, c ContentLoginToken) error {
+	s.LoginTokenInvoked = true
+	return s.LoginTokenFn(n, e, c)
+}