reset uv cache

Author: eleanorjboyd

src/managers/builtin/helpers.ts

@@ -6,7 +6,15 @@ import { createDeferred } from '../../common/utils/deferred';
 import { getConfiguration } from '../../common/workspace.apis';
 import { getUvEnvironments } from './uvEnvironments';
 
-const available = createDeferred<boolean>();
+let available = createDeferred<boolean>();
+
+/**
+ * Reset the UV installation cache.
+ */
+export function resetUvInstallationCache(): void {
+    available = createDeferred<boolean>();
+}
+
 export async function isUvInstalled(log?: LogOutputChannel): Promise<boolean> {
     if (available.completed) {
         return available.promise;

src/test/managers/builtin/helpers.shouldUseUv.unit.test.ts

@@ -17,6 +17,9 @@ suite('Helpers - shouldUseUv', () => {
     let getUvEnvironmentsStub: sinon.SinonStub;
 
     setup(() => {
+        // Reset UV installation cache before each test to ensure clean state
+        helpers.resetUvInstallationCache();
+
         getConfigurationStub = sinon.stub(workspaceApis, 'getConfiguration');
         mockConfig = {
             get: sinon.stub(),