From 41eb46a46f3ed1554afa500ff43c021b8407236a Mon Sep 17 00:00:00 2001
From: Neal Beeken <neal.beeken@mongodb.com>
Date: Wed, 12 Mar 2025 14:20:49 -0400
Subject: [PATCH 1/2] chore(NODE-6848): reduce flakiness of Client Bulk Write
 CSOT enabled acknowledged writes when the timeout is reached while iterating
 the result cursor the bulk write operation times out

---
 test/integration/crud/client_bulk_write.test.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/integration/crud/client_bulk_write.test.ts b/test/integration/crud/client_bulk_write.test.ts
index fa20d8ed29a..31c28d41175 100644
--- a/test/integration/crud/client_bulk_write.test.ts
+++ b/test/integration/crud/client_bulk_write.test.ts
@@ -304,7 +304,7 @@ describe('Client Bulk Write', function () {
             // DRIVERS-3005 - killCursors causes cursor cleanup to extend past timeoutMS.
             // The amount of time killCursors takes is wildly variable and can take up to almost
             // 600-700ms sometimes.
-            expect(end - start).to.be.within(1500, 1500 + 800);
+            expect(end - start).to.be.within(1498, 1500 + 800);
             expect(commands.map(({ commandName }) => commandName)).to.have.lengthOf(2);
           }
         );

From 5d6cac7c12426c62e00977ab56026da761d2b0d3 Mon Sep 17 00:00:00 2001
From: Neal Beeken <neal.beeken@mongodb.com>
Date: Wed, 12 Mar 2025 15:45:56 -0400
Subject: [PATCH 2/2] chore: use +/- pattern

---
 test/integration/crud/client_bulk_write.test.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/integration/crud/client_bulk_write.test.ts b/test/integration/crud/client_bulk_write.test.ts
index 31c28d41175..0d1ce58029c 100644
--- a/test/integration/crud/client_bulk_write.test.ts
+++ b/test/integration/crud/client_bulk_write.test.ts
@@ -289,12 +289,13 @@ describe('Client Bulk Write', function () {
             }
           }),
           async function () {
+            const timeoutMS = 1500;
             const models = await makeMultiResponseBatchModelArray(this.configuration);
             const start = now();
             const timeoutError = await client
               .bulkWrite(models, {
                 verboseResults: true,
-                timeoutMS: 1500
+                timeoutMS
               })
               .catch(e => e);
 
@@ -304,7 +305,7 @@ describe('Client Bulk Write', function () {
             // DRIVERS-3005 - killCursors causes cursor cleanup to extend past timeoutMS.
             // The amount of time killCursors takes is wildly variable and can take up to almost
             // 600-700ms sometimes.
-            expect(end - start).to.be.within(1498, 1500 + 800);
+            expect(end - start).to.be.within(timeoutMS - 100, timeoutMS + 800);
             expect(commands.map(({ commandName }) => commandName)).to.have.lengthOf(2);
           }
         );