Fix failed test

Author: itsmeichigo

WooCommerce/WooCommerceTests/Yosemite/StoresManagerTests.swift

@@ -446,15 +446,16 @@ final class StoresManagerTests: XCTestCase {
             isLoggedInValues.append(isLoggedIn)
         }
         manager.authenticate(credentials: SessionSettings.wporgCredentials)
-        XCTAssertTrue(manager.isAuthenticated)
 
         // When
         let error = ApplicationPasswordUseCaseError.unauthorizedRequest
         MockNotificationCenter.testingInstance.post(name: .ApplicationPasswordsGenerationFailed, object: error, userInfo: nil)
 
         // Assert
+        waitUntil {
+            isLoggedInValues == [false, true, false]
+        }
         XCTAssertFalse(manager.isAuthenticated)
-        XCTAssertEqual(isLoggedInValues, [false, true, false])
     }
 
     /// Verifies that user is logged out when application password regeneration fails if authenticated with wpcom