Update Predict E2E mocks for keyset events

Author: matallui

tests/api-mocking/mock-responses/defaults/polymarket-apis.ts

@@ -24,13 +24,20 @@ export const POLYMARKET_GEOBLOCK_ELIGIBLE = {
 export const POLYMARKET_API_MOCKS = {
   GET: [
     POLYMARKET_GEOBLOCK_ELIGIBLE,
-    // gamma-api: events pagination — consumer reads `data?.data`
+    // gamma-api: events pagination — legacy consumer reads `data?.data`
     {
       urlEndpoint:
         /^https:\/\/gamma-api\.polymarket\.com\/events\/pagination(\?.*)?$/,
       responseCode: 200,
       response: { data: [] },
     },
+    // gamma-api: events keyset — consumer reads `events` and `next_cursor`
+    {
+      urlEndpoint:
+        /^https:\/\/gamma-api\.polymarket\.com\/events\/keyset(\?.*)?$/,
+      responseCode: 200,
+      response: { events: [], next_cursor: null },
+    },
     // gamma-api: public-search — consumer reads `data?.events`
     {
       urlEndpoint:

tests/api-mocking/mock-responses/polymarket/polymarket-mocks.ts

@@ -130,6 +130,17 @@ export const POLYMARKET_API_DOWN = async (mockServer: Mockttp) => {
     },
   });
 
+  await setupMockRequest(mockServer, {
+    requestMethod: 'GET',
+    url: /^https:\/\/gamma-api\.polymarket\.com\/events\/keyset/,
+    responseCode: 500,
+    response: {
+      error: 'Internal Server Error',
+      message: 'Service temporarily unavailable',
+      statusCode: 500,
+    },
+  });
+
   await setupMockRequest(mockServer, {
     requestMethod: 'GET',
     url: /^https:\/\/gamma-api\.polymarket\.com\/events\/\d+/,
@@ -1376,7 +1387,7 @@ export const POLYMARKET_USDC_BALANCE_MOCKS = async (
  * Mock for all Polymarket endpoints (positions, redeemable positions, activity, UpNL, order book, and value)
  * Mock for Polymarket market feeds API
  * Returns market feed data using the proxy pattern (consistent with other mocks)
- * Intercepts proxy calls to gamma-api.polymarket.com/events/pagination
+ * Intercepts proxy calls to gamma-api.polymarket.com/events/pagination and /events/keyset
  */
 export const POLYMARKET_MARKET_FEEDS_MOCKS = async (mockServer: Mockttp) => {
   // Mock proxy calls to gamma-api.polymarket.com (consistent with other mocks)
@@ -1385,7 +1396,8 @@ export const POLYMARKET_MARKET_FEEDS_MOCKS = async (mockServer: Mockttp) => {
     .matching((request) => {
       const url = new URL(request.url).searchParams.get('url');
       return Boolean(
-        url?.includes('gamma-api.polymarket.com/events/pagination'),
+        url?.includes('gamma-api.polymarket.com/events/pagination') ||
+          url?.includes('gamma-api.polymarket.com/events/keyset'),
       );
     })
     .asPriority(PRIORITY.BASE)
@@ -1427,13 +1439,20 @@ export const POLYMARKET_MARKET_FEEDS_MOCKS = async (mockServer: Mockttp) => {
         selectedFeed = POLYMARKET_TRENDING_FEED;
       }
 
-      // Return the feed data in the correct API structure
+      const isKeysetRequest = polymarketUrl.pathname.endsWith('/events/keyset');
+
+      // Return the feed data in the correct API structure for the requested endpoint.
       return {
         statusCode: 200,
-        json: {
-          data: selectedFeed.data,
-          pagination: selectedFeed.pagination,
-        },
+        json: isKeysetRequest
+          ? {
+              events: selectedFeed.data,
+              next_cursor: null,
+            }
+          : {
+              data: selectedFeed.data,
+              pagination: selectedFeed.pagination,
+            },
       };
     });