Merge pull request Expensify#65748 from thelullabyy/fix/63974/infinite-loading-after-merge-acc

Chat header's infinite loading after merge account

Author: marcochavezf

src/libs/ReportUtils.ts

@@ -5292,7 +5292,7 @@ function getReportNameInternal({
     // Not a room or PolicyExpenseChat, generate title from first 5 other participants
     formattedName = buildReportNameFromParticipantNames({report, personalDetails});
 
-    return isArchivedNonExpense ? generateArchivedReportName(formattedName) : formattedName;
+    return isArchivedNonExpense ? generateArchivedReportName(formattedName) : formattedName || (report?.reportName ?? '');
 }
 
 /**

tests/unit/ReportUtilsTest.ts

@@ -741,6 +741,50 @@ describe('ReportUtils', () => {
                 expect(getReportName(expenseChatReport)).toEqual("Ragnar Lothbrok's expenses");
             });
         });
+
+        describe('Fallback scenarios', () => {
+            test('should fallback to report.reportName when primary name generation returns empty string', () => {
+                const reportWithFallbackName: Report = {
+                    reportID: '3',
+                    reportName: 'Custom Report Name',
+                    ownerAccountID: undefined,
+                    participants: {},
+                    policyID: undefined,
+                    chatType: undefined,
+                };
+
+                const result = getReportName(reportWithFallbackName);
+                expect(result).toBe('Custom Report Name');
+            });
+
+            test('should return empty string when both primary name generation and reportName are empty', () => {
+                const reportWithoutName: Report = {
+                    reportID: '4',
+                    reportName: '',
+                    ownerAccountID: undefined,
+                    participants: {},
+                    policyID: undefined,
+                    chatType: undefined,
+                };
+
+                const result = getReportName(reportWithoutName);
+                expect(result).toBe('');
+            });
+
+            test('should return empty string when reportName is undefined', () => {
+                const reportWithUndefinedName: Report = {
+                    reportID: '5',
+                    reportName: undefined,
+                    ownerAccountID: undefined,
+                    participants: {},
+                    policyID: undefined,
+                    chatType: undefined,
+                };
+
+                const result = getReportName(reportWithUndefinedName);
+                expect(result).toBe('');
+            });
+        });
     });
 
     describe('requiresAttentionFromCurrentUser', () => {