test(unit): tighten pubkey buffer and UUID assertions per review

Author: CKodidela

test/unit/repositories/invoice-repository.spec.ts

@@ -247,13 +247,13 @@ describe('InvoiceRepository', () => {
       const { id: _id, ...invoiceWithoutId } = testInvoice
       const sql = repository.upsert(invoiceWithoutId as Invoice).toString()
 
-      expect(sql).to.include('insert into "invoices"')
+      expect(sql).to.match(/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/)
     })
 
     it('encodes pubkey as hex buffer in SQL', () => {
       const sql = repository.upsert(testInvoice).toString()
 
-      expect(sql).to.include(pubkeyHex)
+      expect(sql).to.include(`X'${pubkeyHex}'`)
     })
 
     it('includes all required invoice fields', () => {

test/unit/repositories/user-repository.spec.ts

@@ -262,7 +262,7 @@ describe('UserRepository', () => {
     it('encodes pubkey as hex buffer in SQL', () => {
       const sql = repository.setVanished(pubkeyHex, false).toString()
 
-      expect(sql).to.include(pubkeyHex)
+      expect(sql).to.include(`X'${pubkeyHex}'`)
     })
   })