From 59ba1754fe0daa0f9779be13e509284fc2323970 Mon Sep 17 00:00:00 2001
From: Keith Williams <keithwillcode@gmail.com>
Date: Wed, 31 Dec 2025 13:05:11 -0300
Subject: [PATCH] fix: use stable test dates in duplicate API calls E2E tests
 (#26349)

The tests were failing on December 31 because they used new Date() which
caused month boundary issues with the prefetch logic. This change uses
a fixed future date (July 2030) to ensure consistent test behavior
regardless of when the tests are run.

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 .../booking-duplicate-api-calls.e2e.ts        | 30 +++++++++++--------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/apps/web/playwright/booking-duplicate-api-calls.e2e.ts b/apps/web/playwright/booking-duplicate-api-calls.e2e.ts
index 41ce78aa48..4003f5bcb7 100644
--- a/apps/web/playwright/booking-duplicate-api-calls.e2e.ts
+++ b/apps/web/playwright/booking-duplicate-api-calls.e2e.ts
@@ -36,6 +36,18 @@ async function testDuplicateAPICalls(
   };
 }
 
+/**
+ * Creates a stable test date that avoids month boundary issues.
+ * Uses a fixed date in the middle of a month to ensure consistent behavior
+ * regardless of when the test is run.
+ * @param dayOfMonth - The day of the month to use (5 for beginning, 20 for end)
+ */
+function getStableTestDate(dayOfMonth: number): Date {
+  // Use a fixed future date to avoid any issues with past dates or month boundaries
+  // July 2030 is chosen as it's far in the future and has no special calendar quirks
+  return new Date(2030, 6, dayOfMonth, 12, 0, 0);
+}
+
 test.describe("Duplicate API Calls Prevention", () => {
   test.afterEach(({ users }) => users.deleteAll());
 
@@ -45,8 +57,7 @@ test.describe("Duplicate API Calls Prevention", () => {
   }) => {
     const user = await users.create();
     const eventType = user.eventTypes.find((e) => e.slug === "30-min");
-    const beginningOfMonth = new Date();
-    beginningOfMonth.setDate(5);
+    const beginningOfMonth = getStableTestDate(5);
 
     const { totalCalls, trpcCalls, apiV2Calls } = await testDuplicateAPICalls(
       page,
@@ -66,8 +77,7 @@ test.describe("Duplicate API Calls Prevention", () => {
   }) => {
     const user = await users.create();
     const eventType = user.eventTypes.find((e) => e.slug === "30-min");
-    const endOfMonth = new Date();
-    endOfMonth.setDate(20);
+    const endOfMonth = getStableTestDate(20);
 
     const { totalCalls, trpcCalls, apiV2Calls } = await testDuplicateAPICalls(
       page,
@@ -92,8 +102,7 @@ test.describe("Duplicate API Calls Prevention", () => {
         teammates: [{ name: "teammate-1" }],
       }
     );
-    const beginningOfMonth = new Date();
-    beginningOfMonth.setDate(5);
+    const beginningOfMonth = getStableTestDate(5);
 
     const { team } = await teamOwner.getFirstTeamMembership();
     const teamEvent = await createTeamEventType(
@@ -132,8 +141,7 @@ test.describe("Duplicate API Calls Prevention", () => {
       { id: team.id },
       { teamEventSlug: "team-event-test", teamEventTitle: "Team Event Test" }
     );
-    const endOfMonth = new Date();
-    endOfMonth.setDate(20);
+    const endOfMonth = getStableTestDate(20);
 
     const { totalCalls, trpcCalls, apiV2Calls } = await testDuplicateAPICalls(
       page,
@@ -169,8 +177,7 @@ test.describe("Duplicate API Calls Prevention", () => {
       { id: team.id },
       { teamEventSlug: "org-team-event", teamEventTitle: "Org Team Event" }
     );
-    const beginningOfMonth = new Date();
-    beginningOfMonth.setDate(5);
+    const beginningOfMonth = getStableTestDate(5);
 
     const { totalCalls, trpcCalls, apiV2Calls } = await testDuplicateAPICalls(
       page,
@@ -206,8 +213,7 @@ test.describe("Duplicate API Calls Prevention", () => {
       { id: team.id },
       { teamEventSlug: "org-team-event", teamEventTitle: "Org Team Event" }
     );
-    const endOfMonth = new Date();
-    endOfMonth.setDate(20);
+    const endOfMonth = getStableTestDate(20);
 
     const { totalCalls, trpcCalls, apiV2Calls } = await testDuplicateAPICalls(
       page,