test: [M3-8138] - Add Cypress test for login redirect upon API unauthorized response

packages/manager/.changeset/pr-10655-tests-1721330081453.md

@@ -0,0 +1,5 @@
+---
+"@linode/manager": Tests
+---
+
+Add Cypress test for login redirect upon API unauthorized response ([#10655](https://github.com/linode/manager/pull/10655))

packages/manager/cypress/e2e/core/general/account-login-redirect.spec.ts

@@ -0,0 +1,20 @@
+import { mockApiRequestWithError } from 'support/intercepts/general';
+import { LOGIN_ROOT } from 'src/constants';
+
+describe('account login redirect', () => {
+  /**
+   * The API will return 401 with the body below for all the endpoints.
+   *
+   * { "errors": [ { "reason": "Your account must be authorized to use this endpoint" } ] }
+   */
+  it('should redirect to the login page when the user is not authorized', () => {
+    const errorReason = 'Your account must be authorized to use this endpoint';
+
+    mockApiRequestWithError(401, errorReason);
+
+    cy.visitWithLogin('/linodes/create');
+
+    cy.url().should('contain', `${LOGIN_ROOT}/login?`, { exact: false });
+    cy.findByText('Please log in to continue.').should('be.visible');
+  });
+});

packages/manager/cypress/support/intercepts/general.ts

@@ -57,3 +57,27 @@ export const mockApiMaintenanceMode = (): Cypress.Chainable<null> => {
 
   return cy.intercept(apiMatcher('**'), errorResponse);
 };
+
+/**
+ * Intercepts all requests to Linode API v4 and mocks an error HTTP response.
+ *
+ * @param errorCode - HTTP status code to mock.
+ * @param errorMessage - Response error message to mock.
+ *
+ * @returns Cypress chainable.
+ */
+export const mockApiRequestWithError = (
+  errorCode: number,
+  errorReason: string
+): Cypress.Chainable<null> => {
+  return cy.intercept('GET', apiMatcher('*'), {
+    statusCode: errorCode,
+    body: {
+      errors: [
+        {
+          reason: errorReason,
+        },
+      ],
+    },
+  });
+};