From c59c9430bac3d12115ac8a2b41b0c97e2a48e0a9 Mon Sep 17 00:00:00 2001
From: subsingh-akamai <subsingh@akamai.com>
Date: Fri, 22 Nov 2024 10:07:10 +0530
Subject: [PATCH] test: [M3-8393] - Cypress test for Account Maintenance CSV
 downloads (#11168)

* Updated test confirm maintenance details in the tables - to validate entry in downloaded csv files

* Added changeset: Cypress test for Account Maintenance CSV downloads

* Removed console.log

* Removed library - papaparse to parse csv;Implemented script to parse the csv file

* Removed it.only from test

* Using specific locator for Download CSV and added code to delete downloaded file after assertion

* Refeactoring as per review comment for delete files

* Added assertion in readFile to ensure file content is not empty
---
 .../pr-11168-tests-1730108478631.md           |   5 +
 .../core/account/account-maintenance.spec.ts  | 124 +++++++++++++++++-
 packages/manager/cypress/support/util/csv.ts  |  48 +++++++
 3 files changed, 170 insertions(+), 7 deletions(-)
 create mode 100644 packages/manager/.changeset/pr-11168-tests-1730108478631.md
 create mode 100644 packages/manager/cypress/support/util/csv.ts

diff --git a/packages/manager/.changeset/pr-11168-tests-1730108478631.md b/packages/manager/.changeset/pr-11168-tests-1730108478631.md
new file mode 100644
index 00000000000..ac1f39b27cc
--- /dev/null
+++ b/packages/manager/.changeset/pr-11168-tests-1730108478631.md
@@ -0,0 +1,5 @@
+---
+"@linode/manager": Tests
+---
+
+Cypress test for Account Maintenance CSV downloads ([#11168](https://github.com/linode/manager/pull/11168))
diff --git a/packages/manager/cypress/e2e/core/account/account-maintenance.spec.ts b/packages/manager/cypress/e2e/core/account/account-maintenance.spec.ts
index 56292a96bd5..ba00f881332 100644
--- a/packages/manager/cypress/e2e/core/account/account-maintenance.spec.ts
+++ b/packages/manager/cypress/e2e/core/account/account-maintenance.spec.ts
@@ -1,5 +1,6 @@
 import { mockGetMaintenance } from 'support/intercepts/account';
 import { accountMaintenanceFactory } from 'src/factories';
+import { parseCsv } from 'support/util/csv';
 
 describe('Maintenance', () => {
   /*
@@ -7,6 +8,21 @@ describe('Maintenance', () => {
    * - When there is no pending maintenance, "No pending maintenance." is shown in the table.
    * - When there is no completed maintenance, "No completed maintenance." is shown in the table.
    */
+  beforeEach(() => {
+    const downloadsFolder = Cypress.config('downloadsFolder');
+    const filePatterns = '{pending-maintenance*,completed-maintenance*}';
+    // Delete the file before the test
+    cy.exec(`rm -f ${downloadsFolder}/${filePatterns}`, {
+      failOnNonZeroExit: false,
+    }).then((result) => {
+      if (result.code === 0) {
+        cy.log(`Deleted file: ${filePatterns}`);
+      } else {
+        cy.log(`Failed to delete file: ${filePatterns}`);
+      }
+    });
+  });
+
   it('table empty when no maintenance', () => {
     mockGetMaintenance([], []).as('getMaintenance');
 
@@ -118,12 +134,106 @@ describe('Maintenance', () => {
         });
       });
 
-    // Confirm download buttons work
-    cy.get('button')
-      .filter(':contains("Download CSV")')
-      .should('be.visible')
-      .should('be.enabled')
-      .click({ multiple: true });
-    // TODO Need to add assertions to confirm CSV contains the expected contents on first trial (M3-8393)
+    // Validate content of the downloaded CSV for pending maintenance
+    cy.get('a[download*="pending-maintenance"]')
+      .invoke('attr', 'download')
+      .then((fileName) => {
+        const downloadsFolder = Cypress.config('downloadsFolder');
+
+        // Locate the <a> element for pending-maintenance and then find its sibling <button> element
+        cy.get('a[download*="pending-maintenance"]')
+          .siblings('button')
+          .should('be.visible')
+          .and('contain', 'Download CSV')
+          .click();
+
+        // Map the expected CSV content to match the structure of the downloaded CSV
+        const expectedPendingMigrationContent = accountpendingMaintenance.map(
+          (maintenance) => ({
+            entity_label: maintenance.entity.label,
+            entity_type: maintenance.entity.type,
+            type: maintenance.type,
+            status: maintenance.status,
+            reason: maintenance.reason,
+          })
+        );
+
+        // Read the downloaded CSV and compare its content to the expected CSV content
+        cy.readFile(`${downloadsFolder}/${fileName}`)
+          .should('not.eq', null)
+          .should('not.eq', '')
+          .then((csvContent) => {
+            const parsedCsvPendingMigration = parseCsv(csvContent);
+            expect(parsedCsvPendingMigration.length).to.equal(
+              expectedPendingMigrationContent.length
+            );
+            // Map the parsedCsv to match the structure of expectedCsvContent
+            const actualPendingMigrationCsvContent = parsedCsvPendingMigration.map(
+              (entry: any) => ({
+                entity_label: entry['Entity Label'],
+                entity_type: entry['Entity Type'],
+                type: entry['Type'],
+                status: entry['Status'],
+                reason: entry['Reason'],
+              })
+            );
+
+            expect(actualPendingMigrationCsvContent).to.deep.equal(
+              expectedPendingMigrationContent
+            );
+          });
+      });
+
+    // Validate content of the downloaded CSV for completed maintenance
+    cy.get('a[download*="completed-maintenance"]')
+      .invoke('attr', 'download')
+      .then((fileName) => {
+        const downloadsFolder = Cypress.config('downloadsFolder');
+
+        // Locate the <a> element for completed-maintenance and then find its sibling <button> element
+        cy.get('a[download*="completed-maintenance"]')
+          .siblings('button')
+          .should('be.visible')
+          .and('contain', 'Download CSV')
+          .click();
+
+        // Map the expected CSV content to match the structure of the downloaded CSV
+        const expectedCompletedMigrationContent = accountcompletedMaintenance.map(
+          (maintenance) => ({
+            entity_label: maintenance.entity.label,
+            entity_type: maintenance.entity.type,
+            type: maintenance.type,
+            status: maintenance.status,
+            reason: maintenance.reason,
+          })
+        );
+
+        // Read the downloaded CSV and compare its content to the expected CSV content
+        cy.readFile(`${downloadsFolder}/${fileName}`)
+          .should('not.eq', null)
+          .should('not.eq', '')
+          .then((csvContent) => {
+            const parsedCsvCompletedMigration = parseCsv(csvContent);
+
+            expect(parsedCsvCompletedMigration.length).to.equal(
+              expectedCompletedMigrationContent.length
+            );
+
+            // Map the parsedCsv to match the structure of expectedCsvContent
+            const actualCompletedMigrationCsvContent = parsedCsvCompletedMigration.map(
+              (entry: any) => ({
+                entity_label: entry['Entity Label'],
+                entity_type: entry['Entity Type'],
+                type: entry['Type'],
+                status: entry['Status'],
+                reason: entry['Reason'],
+              })
+            );
+
+            expect(actualCompletedMigrationCsvContent).to.deep.equal(
+              expectedCompletedMigrationContent
+            );
+          });
+      });
   });
 });
diff --git a/packages/manager/cypress/support/util/csv.ts b/packages/manager/cypress/support/util/csv.ts
new file mode 100644
index 00000000000..e96e997948b
--- /dev/null
+++ b/packages/manager/cypress/support/util/csv.ts
@@ -0,0 +1,48 @@
+/**
+ * @file Utilities for handling csv files.
+ */
+
+/**
+ * Parses a CSV string and returns an array of objects representing the data.
+ *
+ * @param {string} csvContent - The CSV content as a string.
+ * @returns {any[]} - An array of objects where each object represents a row in the CSV.
+ *                    The keys of the objects are the headers from the CSV.
+ */
+
+export function parseCsv(csvContent: string): any[] {
+  // Split the CSV content into lines and filter out any empty lines
+  const lines = csvContent.split('\n').filter((line) => line.trim() !== '');
+
+  // Extract the headers from the first line and remove any quotes
+  const headers = lines[0]
+    .split(',')
+    .map((header) => header.trim().replace(/^"|"$/g, ''));
+
+  // Map the remaining lines to objects using the headers
+  const data = lines.slice(1).map((line) => {
+    // Split each line into values, handling quoted values with commas and embedded quotes
+    // The regular expression matches:
+    // - Values enclosed in double quotes, which may contain commas and escaped double quotes (e.g., "value, with, commas" or "value with ""embedded"" quotes")
+    // - Values not enclosed in double quotes, which are separated by commas
+    // The map function then:
+    // - Trims any leading or trailing whitespace from each value
+    // - Removes the enclosing double quotes from quoted values
+    // - Replaces any escaped double quotes within quoted values with a single double quote
+    const values = line
+      .match(/("([^"]|"")*"|[^",\s]+)(?=\s*,|\s*$)/g)
+      ?.map((value) => value.trim().replace(/^"|"$/g, '').replace(/""/g, '"'));
+
+    // Create an object to represent the row
+    const entry: any = {};
+    headers.forEach((header, index) => {
+      entry[header] = values ? values[index] : '';
+    });
+
+    // Return the object representing the row
+    return entry;
+  });
+
+  // Return the array of objects representing the CSV data
+  return data;
+}