test: [M3-7133] - Add integration tests for AGLB certificate delete f…

…low (#9846)

* M3-7133 Add integration tests for AGLB certificate delete flow

* Add changeset

packages/manager/.changeset/pr-9846-added-1699023355495.md

@@ -0,0 +1,5 @@
+---
+"@linode/manager": Added
+---
+
+Add integration tests for AGLB certificate delete flow ([#9846](https://github.com/linode/manager/pull/9846))

packages/manager/cypress/e2e/core/loadBalancers/load-balancer-certificates.spec.ts

@@ -9,21 +9,99 @@ import {
 import { makeFeatureFlagData } from 'support/util/feature-flags';
 import { loadbalancerFactory, certificateFactory } from '@src/factories';
 import { ui } from 'support/ui';
-import { randomLabel, randomString } from 'support/util/random';
+import { randomItem, randomLabel, randomString } from 'support/util/random';
 import {
+  mockDeleteLoadBalancerCertificate,
+  mockDeleteLoadBalancerCertificateError,
   mockGetLoadBalancer,
   mockGetLoadBalancerCertificates,
   mockUploadLoadBalancerCertificate,
 } from 'support/intercepts/load-balancers';
+import { Loadbalancer, Certificate } from '@linode/api-v4/types';
+
+/**
+ * Deletes the TLS / Service Target certificate in the AGLB landing page.
+ *
+ * @param loadBalancer - The load balancer that contains the certificate to be deleted.
+ * @param certificatesDeleteBefore - The array of certificates to be displayed before deleting.
+ * @param certificatesDeleteAfter - The array of certificates to be displayed after deleting.
+ *
+ * Asserts that the landing page has updated to reflect the changes.
+ */
+const deleteCertificate = (
+  loadBalancer: Loadbalancer,
+  certificatesDeleteBefore: Certificate[],
+  certificatesDeleteAfter: Certificate[]
+) => {
+  mockAppendFeatureFlags({
+    aglb: makeFeatureFlagData(true),
+  }).as('getFeatureFlags');
+  mockGetFeatureFlagClientstream().as('getClientStream');
+  mockGetLoadBalancer(loadBalancer).as('getLoadBalancer');
+  mockGetLoadBalancerCertificates(loadBalancer.id, certificatesDeleteBefore).as(
+    'getCertificates'
+  );
+
+  cy.visitWithLogin(`/loadbalancers/${loadBalancer.id}/certificates`);
+  cy.wait([
+    '@getFeatureFlags',
+    '@getClientStream',
+    '@getLoadBalancer',
+    '@getCertificates',
+  ]);
+
+  // Delete a TLS/Service Target certificate.
+  const certificateToDeleteLabel = certificatesDeleteBefore[0].label;
+  ui.actionMenu
+    .findByTitle(`Action Menu for certificate ${certificateToDeleteLabel}`)
+    .should('be.visible')
+    .click();
+  ui.actionMenuItem.findByTitle('Delete').should('be.visible').click();
+
+  mockDeleteLoadBalancerCertificate(
+    loadBalancer.id,
+    certificatesDeleteBefore[0].id
+  ).as('deleteCertificate');
+
+  mockGetLoadBalancerCertificates(loadBalancer.id, certificatesDeleteAfter).as(
+    'getCertificates'
+  );
+
+  ui.dialog
+    .findByTitle(`Delete Certificate ${certificateToDeleteLabel}?`)
+    .should('be.visible')
+    .within(() => {
+      ui.button
+        .findByTitle('Delete')
+        .should('be.visible')
+        .should('be.enabled')
+        .click();
+    });
+
+  cy.wait(['@deleteCertificate', '@getCertificates']);
+
+  // Confirm that the deleted certificate is removed from the table with expected info.
+  cy.findByText(certificateToDeleteLabel).should('not.exist');
+
+  if (certificatesDeleteAfter.length === 0) {
+    // Confirm that Cloud Manager allows users to delete the last certificate, and display empty state gracefully.
+    cy.findByText('No items to display.').should('be.visible');
+  }
+};
 
 describe('Akamai Global Load Balancer certificates page', () => {
+  let mockLoadBalancer: Loadbalancer;
+
+  before(() => {
+    mockLoadBalancer = loadbalancerFactory.build();
+  });
+
   /*
    * - Confirms Load Balancer certificate upload UI flow using mocked API requests.
    * - Confirms that TLS and Service Target certificates can be uploaded.
    * - Confirms that certificates table update to reflects uploaded certificates.
    */
   it('can upload a TLS certificate', () => {
-    const mockLoadBalancer = loadbalancerFactory.build();
     const mockLoadBalancerCertTls = certificateFactory.build({
       label: randomLabel(),
       type: 'downstream',
@@ -94,8 +172,8 @@ describe('Akamai Global Load Balancer certificates page', () => {
     // Confirm that new certificate is listed in the table with expected info.
     cy.findByText(mockLoadBalancerCertTls.label).should('be.visible');
   });
+
   it('can upload a service target certificate', () => {
-    const mockLoadBalancer = loadbalancerFactory.build();
     const mockLoadBalancerCertServiceTarget = certificateFactory.build({
       label: randomLabel(),
       type: 'ca',
@@ -162,4 +240,118 @@ describe('Akamai Global Load Balancer certificates page', () => {
     // Confirm that both new certificates are listed in the table with expected info.
     cy.findByText(mockLoadBalancerCertServiceTarget.label).should('be.visible');
   });
+
+  /*
+   * - Confirms Load Balancer certificate delete UI flow using mocked API requests.
+   * - Confirms that TLS and Service Target certificates can be deleted.
+   * - Confirms that certificates table update to reflects deleted certificates.
+   * - Confirms that the last certificate can be deleted.
+   */
+  it('can delete a TLS certificate', () => {
+    const mockLoadBalancerCertsTls = certificateFactory.buildList(5, {
+      type: 'downstream',
+    });
+    const mockLoadBalancerAfterDeleteCertsTls = mockLoadBalancerCertsTls.slice(
+      1
+    );
+
+    deleteCertificate(
+      mockLoadBalancer,
+      mockLoadBalancerCertsTls,
+      mockLoadBalancerAfterDeleteCertsTls
+    );
+  });
+
+  it('can delete a service target certificate', () => {
+    const mockLoadBalancerCertsTls = certificateFactory.buildList(5, {
+      type: 'ca',
+    });
+    const mockLoadBalancerAfterDeleteCertsTls = mockLoadBalancerCertsTls.slice(
+      1
+    );
+
+    deleteCertificate(
+      mockLoadBalancer,
+      mockLoadBalancerCertsTls,
+      mockLoadBalancerAfterDeleteCertsTls
+    );
+  });
+
+  it('can delete the last certificate', () => {
+    const mockLoadBalancerCertsTls = certificateFactory.buildList(1, {
+      type: randomItem(['ca', 'downstream']),
+    });
+    const mockLoadBalancerAfterDeleteCertsTls = mockLoadBalancerCertsTls.slice(
+      1
+    );
+
+    deleteCertificate(
+      mockLoadBalancer,
+      mockLoadBalancerCertsTls,
+      mockLoadBalancerAfterDeleteCertsTls
+    );
+  });
+
+  it('can handle server errors gracefully when failing to delete the certificate', () => {
+    const mockLoadBalancerCertsTls = certificateFactory.buildList(1, {
+      type: randomItem(['ca', 'downstream']),
+    });
+    const mockLoadBalancerAfterDeleteCertsTls = mockLoadBalancerCertsTls.slice(
+      1
+    );
+
+    mockAppendFeatureFlags({
+      aglb: makeFeatureFlagData(true),
+    }).as('getFeatureFlags');
+    mockGetFeatureFlagClientstream().as('getClientStream');
+    mockGetLoadBalancer(mockLoadBalancer).as('getLoadBalancer');
+    mockGetLoadBalancerCertificates(
+      mockLoadBalancer.id,
+      mockLoadBalancerCertsTls
+    ).as('getCertificates');
+
+    cy.visitWithLogin(`/loadbalancers/${mockLoadBalancer.id}/certificates`);
+    cy.wait([
+      '@getFeatureFlags',
+      '@getClientStream',
+      '@getLoadBalancer',
+      '@getCertificates',
+    ]);
+
+    // Delete a TLS/Service Target certificate.
+    const certificateToDeleteLabel = mockLoadBalancerCertsTls[0].label;
+    ui.actionMenu
+      .findByTitle(`Action Menu for certificate ${certificateToDeleteLabel}`)
+      .should('be.visible')
+      .click();
+    ui.actionMenuItem.findByTitle('Delete').should('be.visible').click();
+
+    mockDeleteLoadBalancerCertificateError(
+      mockLoadBalancer.id,
+      mockLoadBalancerCertsTls[0].id
+    ).as('deleteCertificateError');
+
+    ui.dialog
+      .findByTitle(`Delete Certificate ${certificateToDeleteLabel}?`)
+      .should('be.visible')
+      .within(() => {
+        ui.button
+          .findByTitle('Delete')
+          .should('be.visible')
+          .should('be.enabled')
+          .click();
+      });
+
+    cy.wait('@deleteCertificateError');
+
+    ui.dialog
+      .findByTitle(`Delete Certificate ${certificateToDeleteLabel}?`)
+      .should('be.visible')
+      .within(() => {
+        // Confirm that an error message shows up in the dialog
+        cy.findByText(
+          'An error occurred while deleting Load Balancer certificate.'
+        ).should('be.visible');
+      });
+  });
 });

packages/manager/cypress/support/intercepts/load-balancers.ts

@@ -97,6 +97,48 @@ export const mockUploadLoadBalancerCertificate = (
   );
 };
 
+/**
+ * Intercepts DELETE request to delete an AGLB load balancer certificate and mocks a success response.
+ *
+ * @param loadBalancerId - ID of load balancer for which to delete certificates.
+ * @param certificateId - ID of certificate for which to remove.
+ *
+ * @returns Cypress chainable.
+ */
+export const mockDeleteLoadBalancerCertificate = (
+  loadBalancerId: number,
+  certificateId: number
+) => {
+  return cy.intercept(
+    'DELETE',
+    apiMatcher(`/aglb/${loadBalancerId}/certificates/${certificateId}`),
+    makeResponse()
+  );
+};
+
+/**
+ * Intercepts GET request to retrieve AGLB service targets and mocks HTTP 500 error response.
+ *
+ * @param loadBalancerId - ID of load balancer for which to delete certificates.
+ * @param certificateId - ID of certificate for which to remove.
+ * @param message - Optional error message with which to respond.
+ *
+ * @returns Cypress chainable.
+ */
+export const mockDeleteLoadBalancerCertificateError = (
+  loadBalancerId: number,
+  certificateId: number,
+  message?: string
+) => {
+  const defaultMessage =
+    'An error occurred while deleting Load Balancer certificate.';
+  return cy.intercept(
+    'DELETE',
+    apiMatcher(`/aglb/${loadBalancerId}/certificates/${certificateId}`),
+    makeErrorResponse(message ?? defaultMessage, 500)
+  );
+};
+
 /**
  * Intercepts GET request to retrieve AGLB service targets and mocks response.
  *