added redirect url tests (#74)

utils/__tests__/redirect_url.test.ts

@@ -0,0 +1,48 @@
+import { EmailString } from "@pagopa/ts-commons/lib/strings";
+import { ValidUrl } from "@pagopa/ts-commons/lib/url";
+import base64url from "base64url";
+import { TokenQueryParam } from "../middleware";
+import {
+  confirmChoicePageUrl,
+  validationFailureUrl,
+  validationSuccessUrl
+} from "../redirect_url";
+import { ValidationErrors } from "../validation_errors";
+
+const validationCallbackUrl = {
+  href: "https://localhost/validation"
+} as ValidUrl;
+
+const confirmValidationUrl = {
+  href: "https://localhost/confirm-choice"
+} as ValidUrl;
+
+const aToken = "sample_token" as TokenQueryParam;
+const anEmail = "[email protected]" as EmailString;
+
+describe("Redirect utilities testing", () => {
+  it("should redirect to confirm URL", () => {
+    const result = confirmChoicePageUrl(confirmValidationUrl, aToken, anEmail);
+    expect(result.href).toEqual(
+      `${confirmValidationUrl.href}?token=${aToken}&email=${base64url(anEmail)}`
+    );
+  });
+
+  it("should redirect to result page", () => {
+    const result = validationSuccessUrl(validationCallbackUrl);
+    expect(result.href).toEqual(`${validationCallbackUrl.href}?result=success`);
+  });
+
+  it.each`
+    error
+    ${ValidationErrors.GENERIC_ERROR}
+    ${ValidationErrors.INVALID_TOKEN}
+    ${ValidationErrors.TOKEN_EXPIRED}
+    ${ValidationErrors.EMAIL_ALREADY_TAKEN}
+  `("should redirect to failure page with $error", ({ error }) => {
+    const result = validationFailureUrl(validationCallbackUrl, error);
+    expect(result.href).toEqual(
+      `${validationCallbackUrl.href}?result=failure&error=${error}`
+    );
+  });
+});