chore: add data-testid's and some additional testing

apps/login/src/components/register-form-without-password.tsx

@@ -131,6 +131,7 @@ export function RegisterFormWithoutPassword({
             {...register("firstname", { required: "This field is required" })}
             label="First name"
             error={errors.firstname?.message as string}
+            data-testid="firstname-text-input"
           />
         </div>
         <div className="">
@@ -141,6 +142,7 @@ export function RegisterFormWithoutPassword({
             {...register("lastname", { required: "This field is required" })}
             label="Last name"
             error={errors.lastname?.message as string}
+            data-testid="lastname-text-input"
           />
         </div>
         <div className="col-span-2">
@@ -151,6 +153,7 @@ export function RegisterFormWithoutPassword({
             {...register("email", { required: "This field is required" })}
             label="E-mail"
             error={errors.email?.message as string}
+            data-testid="email-text-input"
           />
         </div>
       </div>
@@ -180,7 +183,7 @@ export function RegisterFormWithoutPassword({
       )}
 
       <div className="mt-8 flex w-full flex-row items-center justify-between">
-        <BackButton />
+        <BackButton data-testid="back-button" />
         <Button
           type="submit"
           variant={ButtonVariants.Primary}
@@ -188,6 +191,7 @@ export function RegisterFormWithoutPassword({
           onClick={handleSubmit((values) =>
             submitAndContinue(values, selected === methods[0] ? false : true),
           )}
+          data-testid="submit-button"
         >
           {loading && <Spinner className="h-5 w-5 mr-2" />}
           {t("submit")}