test: add Cypress E2E test for Audit Trails CSV download

- Added comprehensive E2E test to prevent CSV download regression
- Implemented stable error toast verification to avoid false positives
- Updated .browserslistrc to remove outdated browser versions
- Refined .gitignore to exclude only Cypress-generated artifacts
- Configured proper test selectors and wait strategies

Addresses: WEB-493

cypress/e2e/audit-trails.cy.ts

@@ -0,0 +1,169 @@
+describe('Audit Trails', () => {
+  // Test data constants for easy maintenance
+  const TEST_USER = {
+    username: 'mifos',
+    password: 'password'
+  };
+
+  const BASE_URL = 'http://localhost:4200';
+
+  beforeEach(() => {
+    // Start each test from a clean state
+    cy.visit(BASE_URL);
+  });
+
+  it('should login, search for system, navigate to audit trails, and download CSV without errors', () => {
+    // Step 1: Login to the application
+    loginToApplication(TEST_USER.username, TEST_USER.password);
+
+    // Step 2: Handle the warning dialog if it appears
+    handleWarningDialog();
+
+    // Step 3: Use global search to find "system"
+    searchInGlobalSearchBar('system');
+
+    // Step 4: Click directly on Audit Trails button (no need to click System menu first!)
+    clickAuditTrailsButton();
+
+    // Step 5: Download CSV from audit trails page
+    downloadCSV();
+
+    // Step 6: Verify no errors occurred (Regression Check)
+    verifyNoErrorToast();
+  });
+
+  // Helper Functions for better readability and reusability
+
+  /**
+   * Logs into the application with provided credentials
+   */
+  function loginToApplication(username: string, password: string) {
+    // Find username input - using multiple selectors for stability
+    cy.get('input[placeholder="Username"], input[formcontrolname="username"], input[type="text"]')
+      .first()
+      .should('be.visible')
+      .clear()
+      .type(username);
+
+    // Find password input
+    cy.get('input[placeholder="Password"], input[type="password"]').should('be.visible').clear().type(password);
+
+    // Click the login button using text content (most stable)
+    cy.contains('button', 'Login').click({ force: true });
+
+    // Wait for login to complete
+    cy.url().should('not.include', '/login');
+  }
+
+  /**
+   * Handles the warning/info dialog that appears after login
+   */
+  function handleWarningDialog() {
+    // Wait for dialog to appear and close it
+    cy.get('mat-dialog-container', { timeout: 10000 })
+      .should('be.visible')
+      .within(() => {
+        cy.contains('button', /close|ok|continue/i).click({ force: true });
+      });
+
+    // Wait for dialog to close
+    cy.wait(1000);
+  }
+
+  /**
+   * Uses the global search bar to search for content
+   * Based on the original recording: mat-mdc-text-field-wrapper
+   */
+  function searchInGlobalSearchBar(searchTerm: string) {
+    // Find the search field using the class you provided
+    cy.get('.mat-mdc-text-field-wrapper input, .mdc-text-field input')
+      .first()
+      .should('be.visible')
+      .clear()
+      .type(searchTerm);
+
+    // Wait for search results/autocomplete to appear
+    cy.wait(1000);
+
+    // Select the matching option from the dropdown
+    cy.get('mat-option').should('be.visible');
+    cy.contains('mat-option', searchTerm, { matchCase: false }).click();
+  }
+
+  /**
+   * Clicks on the Audit Trails button that appears after searching for "system"
+   * After the search, a menu opens with various options including Audit Trails
+   */
+  function clickAuditTrailsButton() {
+    // After searching for "system", a menu opens
+    // We need to click the Audit Trails option directly from that menu
+    // Class: mat-mdc-list-item mdc-list-item mat-mdc-list-item-interactive
+    cy.get('.mat-mdc-list-item.mdc-list-item')
+      .contains(/audit.*trail/i)
+      .should('be.visible')
+      .click({ force: true });
+
+    // Wait for audit trails page to load
+    cy.url().should('include', 'audit');
+    cy.wait(2000);
+  }
+
+  /**
+   * Downloads the CSV file from the audit trails page
+   * Based on original: looks for download button
+   */
+  function downloadCSV() {
+    // Wait for the audit trails page to load completely
+    cy.wait(2000); // Ideally use cy.intercept, but wait is okay for now
+
+    // strategy : Try the Icon first (Most reliable based on previous errors), then fallback to text
+    cy.get('body').then(($body) => {
+      // Check for the specific Excel Icon we found earlier
+      if ($body.find('.fa-file-excel-o').length > 0) {
+        cy.get('.fa-file-excel-o').parent().click({ force: true });
+        cy.log('Clicked download button using Icon class');
+      }
+      // fallback: Check for ARIA labels or Text
+      else if ($body.find('button[aria-label*="ownload"]').length > 0) {
+        cy.get('button[aria-label*="ownload"]').click({ force: true });
+        cy.log('Clicked download button using Aria Label');
+      } else {
+        // Last resort: Text
+        cy.contains('button', /csv|download|export/i).click({ force: true });
+      }
+    });
+
+    // Wait for download to process
+    cy.wait(2000);
+  }
+
+  /**
+   * regression check : Verifies that no error toast appears
+   * This ensures the download operation completed successfully
+   */
+  function verifyNoErrorToast() {
+    // Primary check: No error toast should appear
+    // Using specific toast selectors to avoid false positives from unrelated error classes
+    // like mat-error, error-text, etc.
+    cy.get('.toast-container .toast-error, .toast-error, [data-cy="toast-error"]', { timeout: 5000 }).should(
+      'not.exist'
+    );
+
+    // Additional check: If any toast exists, ensure it doesn't have error styling
+    cy.get('body').then(($body) => {
+      const toastExists = $body.find('.toast-container .toast').length > 0;
+
+      if (toastExists) {
+        cy.get('.toast-container .toast').filter(':visible').should('not.have.class', 'toast-error');
+        cy.log('✓ Regression check passed: Toast found but no error styling detected');
+      } else {
+        cy.log('✓ Regression check passed: No toast notifications detected');
+      }
+    });
+
+    // Note: CSV download verification
+    // Cypress automatically downloads files to cypress/downloads folder
+    // You can manually verify the CSV file after the test completes
+    // Or add cy.readFile('cypress/downloads/filename.csv') for automated verification
+  }
+});

cypress/e2e/spec.cy.ts

@@ -2,8 +2,8 @@ describe('Login Page', () => {
   it('Visits the initial web page', () => {
     cy.visit('/');
     cy.url().should('includes', 'login');
-    cy.get('#mat-input-0').should ('be.visible');
-    cy.get('#mat-input-1').should ('be.visible');
+    cy.get('#mat-input-0').should('be.visible');
+    cy.get('#mat-input-1').should('be.visible');
     cy.contains('Login');
     cy.contains('Remember me');
   });
@@ -26,5 +26,4 @@ describe('Login Page', () => {
     cy.get('#logout').click();
     cy.contains('Username');
   });
-
 });