chore: fix flakiness of exports by waiting to at least have 1 available (#516)

Author: kmruiz

src/common/exportsManager.ts

@@ -56,7 +56,7 @@ type StoredExport = ReadyExport | InProgressExport;
  *
  * Ref Cursor: https://forum.cursor.com/t/cursor-mcp-resource-feature-support/50987
  * JIRA: https://jira.mongodb.org/browse/MCP-104 */
-type AvailableExport = Pick<StoredExport, "exportName" | "exportTitle" | "exportURI" | "exportPath">;
+export type AvailableExport = Pick<StoredExport, "exportName" | "exportTitle" | "exportURI" | "exportPath">;
 
 export type ExportsManagerConfig = Pick<UserConfig, "exportsPath" | "exportTimeoutMs" | "exportCleanupIntervalMs">;
 

tests/unit/common/exportsManager.test.ts

@@ -11,7 +11,7 @@ import {
     ExportsManager,
     validateExportName,
 } from "../../../src/common/exportsManager.js";
-
+import type { AvailableExport } from "../../../src/common/exportsManager.js";
 import { config } from "../../../src/common/config.js";
 import { ROOT_DIR } from "../../accuracy/sdk/constants.js";
 import { timeout } from "../../integration/helpers.js";
@@ -124,6 +124,15 @@ function timeoutPromise(timeoutMS: number, context: string): Promise<never> {
     });
 }
 
+async function waitUntilThereIsAnExportAvailable(manager: ExportsManager): Promise<AvailableExport[]> {
+    return await vi.waitFor(() => {
+        const exports = manager.availableExports;
+        expect(exports.length).toBeGreaterThan(0);
+
+        return exports;
+    });
+}
+
 async function getExportAvailableNotifier(
     expectedExportURI: string,
     manager: ExportsManager,
@@ -318,7 +327,8 @@ describe("ExportsManager unit test", () => {
                 await cursorCloseNotification;
 
                 // Updates available export
-                const availableExports = manager.availableExports;
+                // this is async code so we should wait and retry
+                const availableExports = await waitUntilThereIsAnExportAvailable(manager);
                 expect(availableExports).toHaveLength(1);
                 expect(availableExports).toContainEqual(
                     expect.objectContaining({
@@ -352,7 +362,7 @@ describe("ExportsManager unit test", () => {
 
                 const expectedExportName = exportName.endsWith(".json") ? exportName : `${exportName}.json`;
                 // Updates available export
-                const availableExports = manager.availableExports;
+                const availableExports = await waitUntilThereIsAnExportAvailable(manager);
                 expect(availableExports).toHaveLength(1);
                 expect(availableExports).toContainEqual(
                     expect.objectContaining({
@@ -387,7 +397,7 @@ describe("ExportsManager unit test", () => {
 
                 const expectedExportName = exportName.endsWith(".json") ? exportName : `${exportName}.json`;
                 // Updates available export
-                const availableExports = manager.availableExports;
+                const availableExports = await waitUntilThereIsAnExportAvailable(manager);
                 expect(availableExports).toHaveLength(1);
                 expect(availableExports).toContainEqual(
                     expect.objectContaining({