inTest assertion errors and async leaks when using Appium Flutter Integration Driver #132
Description
🐛 Bug Report
We are facing random test failures while running Flutter integration tests through Appium + appium-flutter-integration-driver.
The error consistently points to Flutter’s WidgetTester APIs being called outside a valid test context, causing:
- "inTest: is not true" assertion failures
- "Asynchronous call to guarded function leaked. You must use 'await' with all Future-returning test APIs."
- Retrying loops in Appium but eventually failing
Error 1:
issue 1: [0-0] [2025-08-26T17:16:52.397Z] DEBUG: Entering Text: ipsa into Element [0-0] [2025-08-26T17:16:55.090Z] DEBUG: Initial send keys failed with error: unknown error: WebDriverError: An unknown server-side error occurred while processing the command. Original error: Asynchronous call to guarded function leaked. [0-0] You must use "await" with all Future-returning test APIs. [0-0] The test API method "pump" from class WidgetTester was called from dart:async/zone.dart on line 1414, but never completed before its parent scope closed. [0-0] An uncaught exception may have caused the guarded function leak. The exception was: [0-0] 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. [0-0] The stack trace associated with this exception was: [0-0] #2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12) [0-0] #3 WidgetTester.pump.<anonymous closure> (package:flutter_test/src/widget_tester.dart:667:53) [0-0] #6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #7 WidgetTester.pump (package:flutter_test/src/widget_tester.dart:667:27) [0-0] #8 WidgetTester.showKeyboard.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1139:13) [0-0] #11 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #12 WidgetTester.showKeyboard (package:flutter_test/src/widget_tester.dart:1127:27) [0-0] #13 WidgetTester.enterText.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1163:13) [0-0] #16 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #17 WidgetTester.enterText (package:flutter_test/src/widget_tester.dart:1162:27) [0-0] #18 ElementHelper.setText (package:appium_flutter_server/src/utils/element_helper.dart:73:18) [0-0] #19 ClearHandler.handle (package:appium_flutter_server/src/handler/clear.dart:21:25) [0-0] <asynchronous suspension> [0-0] #20 RequestHandler.getHandler.<anonymous closure> (package:appium_flutter_server/src/handler/request/request_handler.dart:30:35) [0-0] <asynchronous suspension> [0-0] #21 _RouterPlusHandler._handler (package:shelf_plus/src/router_plus/router_plus.dart:64:16) [0-0] <asynchronous suspension> [0-0] #22 RouterEntry.invoke.<anonymous closure> (package:shelf_router/src/router_entry.dart:107:16) [0-0] <asynchronous suspension> [0-0] #23 RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12) [0-0] <asynchronous suspension> [0-0] #24 Router.call (package:shelf_router/src/router.dart:184:26) [0-0] <asynchronous suspension> [0-0] #25 handleRequest (package:shelf/shelf_io.dart:140:16) [0-0] <asynchronous suspension> [0-0] (elided 8 frames from class _AssertionError and dart:async) when running "element/35d08b1c-35d0-8b1c-35d0-8b1c35d08b1c/clear" with method "POST", retrying... [0-0] [2025-08-26T17:16:55.090Z] DEBUG: Retrying function [0-0] [2025-08-26T17:16:57.728Z] DEBUG: Error on attempt 1: unknown error: WebDriverError: An unknown server-side error occurred while processing the command. Original error: Asynchronous call to guarded function leaked. [0-0] You must use "await" with all Future-returning test APIs. [0-0] The test API method "pump" from class WidgetTester was called from dart:async/zone.dart on line 1414, but never completed before its parent scope closed. [0-0] An uncaught exception may have caused the guarded function leak. The exception was: [0-0] 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. [0-0] The stack trace associated with this exception was: [0-0] #2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12) [0-0] #3 WidgetTester.pump.<anonymous closure> (package:flutter_test/src/widget_tester.dart:667:53) [0-0] #6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #7 WidgetTester.pump (package:flutter_test/src/widget_tester.dart:667:27) [0-0] #8 WidgetTester.showKeyboard.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1139:13) [0-0] #11 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #12 WidgetTester.showKeyboard (package:flutter_test/src/widget_tester.dart:1127:27) [0-0] #13 WidgetTester.enterText.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1163:13) [0-0] #16 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #17 WidgetTester.enterText (package:flutter_test/src/widget_tester.dart:1162:27) [0-0] #18 ElementHelper.setText (package:appium_flutter_server/src/utils/element_helper.dart:73:18) [0-0] #19 ClearHandler.handle (package:appium_flutter_server/src/handler/clear.dart:21:25) [0-0] <asynchronous suspension> [0-0] #20 RequestHandler.getHandler.<anonymous closure> (package:appium_flutter_server/src/handler/request/request_handler.dart:30:35) [0-0] <asynchronous suspension> [0-0] #21 _RouterPlusHandler._handler (package:shelf_plus/src/router_plus/router_plus.dart:64:16) [0-0] <asynchronous suspension> [0-0] #22 RouterEntry.invoke.<anonymous closure> (package:shelf_router/src/router_entry.dart:107:16) [0-0] <asynchronous suspension> [0-0] #23 RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12) [0-0] <asynchronous suspension> [0-0] #24 Router.call (package:shelf_router/src/router.dart:184:26) [0-0] <asynchronous suspension> [0-0] #25 handleRequest (package:shelf/shelf_io.dart:140:16) [0-0] <asynchronous suspension> [0-0] (elided 8 frames from class _AssertionError and dart:async) when running "element/35d08b1c-35d0-8b1c-35d0-8b1c35d08b1c/clear" with method "POST" [0-0] [2025-08-26T17:16:58.730Z] DEBUG: Retrying function [0-0] [2025-08-26T17:17:01.387Z] DEBUG: Error on attempt 2: unknown error: WebDriverError: An unknown server-side error occurred while processing the command. Original error: Asynchronous call to guarded function leaked. [0-0] You must use "await" with all Future-returning test APIs. [0-0] The test API method "pump" from class WidgetTester was called from dart:async/zone.dart on line 1414, but never completed before its parent scope closed. [0-0] An uncaught exception may have caused the guarded function leak. The exception was: [0-0] 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. [0-0] The stack trace associated with this exception was: [0-0] #2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12) [0-0] #3 WidgetTester.pump.<anonymous closure> (package:flutter_test/src/widget_tester.dart:667:53) [0-0] #6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #7 WidgetTester.pump (package:flutter_test/src/widget_tester.dart:667:27) [0-0] #8 WidgetTester.showKeyboard.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1139:13) [0-0] #11 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #12 WidgetTester.showKeyboard (package:flutter_test/src/widget_tester.dart:1127:27) [0-0] #13 WidgetTester.enterText.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1163:13) [0-0] #16 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #17 WidgetTester.enterText (package:flutter_test/src/widget_tester.dart:1162:27) [0-0] #18 ElementHelper.setText (package:appium_flutter_server/src/utils/element_helper.dart:73:18) [0-0] #19 ClearHandler.handle (package:appium_flutter_server/src/handler/clear.dart:21:25) [0-0] <asynchronous suspension> [0-0] #20 RequestHandler.getHandler.<anonymous closure> (package:appium_flutter_server/src/handler/request/request_handler.dart:30:35) [0-0] <asynchronous suspension> [0-0] #21 _RouterPlusHandler._handler (package:shelf_plus/src/router_plus/router_plus.dart:64:16) [0-0] <asynchronous suspension> [0-0] #22 RouterEntry.invoke.<anonymous closure> (package:shelf_router/src/router_entry.dart:107:16) [0-0] <asynchronous suspension> [0-0] #23 RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12) [0-0] <asynchronous suspension> [0-0] #24 Router.call (package:shelf_router/src/router.dart:184:26) [0-0] <asynchronous suspension> [0-0] #25 handleRequest (package:shelf/shelf_io.dart:140:16) [0-0] <asynchronous suspension> [0-0] (elided 8 frames from class _AssertionError and dart:async) when running "element/35d08b1c-35d0-8b1c-35d0-8b1c35d08b1c/clear" with method "POST" [0-0] [2025-08-26T17:17:02.388Z] DEBUG: Retrying function [0-0] [2025-08-26T17:17:05.041Z] DEBUG: Error on attempt 3: unknown error: WebDriverError: An unknown server-side error occurred while processing the command. Original error: Asynchronous call to guarded function leaked. [0-0] You must use "await" with all Future-returning test APIs. [0-0] The test API method "pump" from class WidgetTester was called from dart:async/zone.dart on line 1414, but never completed before its parent scope closed. [0-0] An uncaught exception may have caused the guarded function leak. The exception was: [0-0] 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. [0-0] The stack trace associated with this exception was: [0-0] #2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12) [0-0] #3 WidgetTester.pump.<anonymous closure> (package:flutter_test/src/widget_tester.dart:667:53) [0-0] #6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #7 WidgetTester.pump (package:flutter_test/src/widget_tester.dart:667:27) [0-0] #8 WidgetTester.showKeyboard.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1139:13) [0-0] #11 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #12 WidgetTester.showKeyboard (package:flutter_test/src/widget_tester.dart:1127:27) [0-0] #13 WidgetTester.enterText.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1163:13) [0-0] #16 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #17 WidgetTester.enterText (package:flutter_test/src/widget_tester.dart:1162:27) [0-0] #18 ElementHelper.setText (package:appium_flutter_server/src/utils/element_helper.dart:73:18) [0-0] #19 ClearHandler.handle (package:appium_flutter_server/src/handler/clear.dart:21:25) [0-0] <asynchronous suspension> [0-0] #20 RequestHandler.getHandler.<anonymous closure> (package:appium_flutter_server/src/handler/request/request_handler.dart:30:35) [0-0] <asynchronous suspension> [0-0] #21 _RouterPlusHandler._handler (package:shelf_plus/src/router_plus/router_plus.dart:64:16) [0-0] <asynchronous suspension> [0-0] #22 RouterEntry.invoke.<anonymous closure> (package:shelf_router/src/router_entry.dart:107:16) [0-0] <asynchronous suspension> [0-0] #23 RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12) [0-0] <asynchronous suspension> [0-0] #24 Router.call (package:shelf_router/src/router.dart:184:26) [0-0] <asynchronous suspension> [0-0] #25 handleRequest (package:shelf/shelf_io.dart:140:16) [0-0] <asynchronous suspension> [0-0] (elided 8 frames from class _AssertionError and dart:async) when running "element/35d08b1c-35d0-8b1c-35d0-8b1c35d08b1c/clear" with method "POST" [0-0] [2025-08-26T17:17:05.097Z] ERROR: Error: WebDriverError: An unknown server-side error occurred while processing the command. Original error: Asynchronous call to guarded function leaked. [0-0] You must use "await" with all Future-returning test APIs. [0-0] The test API method "pump" from class WidgetTester was called from dart:async/zone.dart on line 1414, but never completed before its parent scope closed. [0-0] An uncaught exception may have caused the guarded function leak. The exception was: [0-0] 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. [0-0] The stack trace associated with this exception was: [0-0] #2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12) [0-0] #3 WidgetTester.pump.<anonymous closure> (package:flutter_test/src/widget_tester.dart:667:53) [0-0] #6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #7 WidgetTester.pump (package:flutter_test/src/widget_tester.dart:667:27) [0-0] #8 WidgetTester.showKeyboard.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1139:13) [0-0] #11 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #12 WidgetTester.showKeyboard (package:flutter_test/src/widget_tester.dart:1127:27) [0-0] #13 WidgetTester.enterText.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1163:13) [0-0] #16 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) [0-0] #17 WidgetTester.enterText (package:flutter_test/src/widget_tester.dart:1162:27) [0-0] #18 ElementHelper.setText (package:appium_flutter_server/src/utils/element_helper.dart:73:18) [0-0] #19 ClearHandler.handle (package:appium_flutter_server/src/handler/clear.dart:21:25) [0-0] <asynchronous suspension> [0-0] #20 RequestHandler.getHandler.<anonymous closure> (package:appium_flutter_server/src/handler/request/request_handler.dart:30:35) [0-0] <asynchronous suspension> [0-0] #21 _RouterPlusHandler._handler (package:shelf_plus/src/router_plus/router_plus.dart:64:16) [0-0] <asynchronous suspension> [0-0] #22 RouterEntry.invoke.<anonymous closure> (package:shelf_router/src/router_entry.dart:107:16) [0-0] <asynchronous suspension> [0-0] #23 RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12) [0-0] <asynchronous suspension> [0-0] #24 Router.call (package:shelf_router/src/router.dart:184:26) [0-0] <asynchronous suspension> [0-0] #25 handleRequest (package:shelf/shelf_io.dart:140:16) [0-0] <asynchronous suspension> [0-0] (elided 8 frames from class _AssertionError and dart:async) when running "element/35d08b1c-35d0-8b1c-35d0-8b1c35d08b1c/clear" with method "POST" [0-0] [2025-08-26T17:17:06.198Z] DEBUG: Screenshot taken on failure. [0-0] ✅ Test completed: should add new contact (FAILED) [0-0] unknown error in "Add Contact Page.should add new contact" unknown error: WebDriverError: An unknown server-side error occurred while processing the command. Original error: Asynchronous call to guarded function leaked. You must use "await" with all Future-returning test APIs. The test API method "pump" from class WidgetTester was called from dart:async/zone.dart on line 1414, but never completed before its parent scope closed. An uncaught exception may have caused the guarded function leak. The exception was: 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. The stack trace associated with this exception was: #2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12) #3 WidgetTester.pump.<anonymous closure> (package:flutter_test/src/widget_tester.dart:667:53) #6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) #7 WidgetTester.pump (package:flutter_test/src/widget_tester.dart:667:27) #8 WidgetTester.showKeyboard.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1139:13) #11 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) #12 WidgetTester.showKeyboard (package:flutter_test/src/widget_tester.dart:1127:27) #13 WidgetTester.enterText.<anonymous closure> (package:flutter_test/src/widget_tester.dart:1163:13) #16 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41) #17 WidgetTester.enterText (package:flutter_test/src/widget_tester.dart:1162:27) #18 ElementHelper.setText (package:appium_flutter_server/src/utils/element_helper.dart:73:18) #19 ClearHandler.handle (package:appium_flutter_server/src/handler/clear.dart:21:25) <asynchronous suspension> #20 RequestHandler.getHandler.<anonymous closure> (package:appium_flutter_server/src/handler/request/request_handler.dart:30:35) <asynchronous suspension> #21 _RouterPlusHandler._handler (package:shelf_plus/src/router_plus/router_plus.dart:64:16) <asynchronous suspension> #22 RouterEntry.invoke.<anonymous closure> (package:shelf_router/src/router_entry.dart:107:16) <asynchronous suspension> #23 RouterEntry.invoke (package:shelf_router/src/router_entry.dart:104:12) <asynchronous suspension> #24 Router.call (package:shelf_router/src/router.dart:184:26) <asynchronous suspension> #25 handleRequest (package:shelf/shelf_io.dart:140:16) <asynchronous suspension> (elided 8 frames from class _AssertionError and dart:async) when running "element/35d08b1c-35d0-8b1c-35d0-8b1c35d08b1c/clear" with method "POST" [0-0] [2025-08-26T17:17:06.204Z] DEBUG: Current main step finalized successfully [0-0] [Log Utils] Log process and stream stopped. [0-0] [Log Utils] Log process and stream stopped.
Error 2:
{"error":"unknown error","message":"An unknown server-side error occurred while processing the command. Original error: 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true.","stacktrace":"UnknownError: An unknown server-side error occurred while processing the command. Original error: 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true.\n at errorFromW3CJsonCode (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/protocol/errors.js:1110:25)\n at ProxyRequestError.getActualError (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/protocol/errors.js:979:14)\n at JWProxy.command (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/jsonwp-proxy/proxy.js:357:19)\n at processTicksAndRejections (node:internal/process/task_queues:95:5)\n at AppiumFlutterDriver.findElOrEls (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/build/src/commands/element.js:47:25)\n at AppiumFlutterDriver.findElOrElsWithProcessing (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/basedriver/commands/find.ts:60:12)\n at AppiumFlutterDriver.findElement (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/basedriver/commands/find.ts:75:12)"}
Appium Logs:
2025-08-27 15:16:16:212 [HTTP] --> POST /wd/hub/session/e57b3054-88be-4e1d-b242-eaf4562bf82d/element 2025-08-27 15:16:16:213 [HTTP] {"using":"-flutter key","value":"task_details_select_photos_button"} 2025-08-27 15:16:16:213 [AppiumFlutterDriver@3592] Calling AppiumDriver.findElement() with args: ["-flutter key","task_details_select_photos_button","e57b3054-88be-4e1d-b242-eaf4562bf82d"] 2025-08-27 15:16:16:213 [AppiumFlutterDriver@3592] Valid locator strategies for this request: xpath, css selector, id, name, class name, -android uiautomator, accessibility id, -ios predicate string, -ios class chain, key, semantics label, text, type, text containing, -flutter key, -flutter semantics label, -flutter text, -flutter type, -flutter text containing 2025-08-27 15:16:16:213 [WD Proxy] Matched '/element' to command name 'findElement' 2025-08-27 15:16:16:213 [WD Proxy] Proxying [POST /element] to [POST http://127.0.0.1:10000/session/12b9f19a-7082-453f-9aef-a6fc3203e374/element] with body: {"strategy":"-flutter key","selector":"task_details_select_photos_button"} 2025-08-27 15:16:16:237 [WD Proxy] Got response with status 500: {"sessionId":"12b9f19a-7082-453f-9aef-a6fc3203e374","value":{"error":"unknown error","message":"'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true.","stackTrace":"#0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:50:61)\n#1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)\n#2 LiveTestWidgetsFlutterBinding.pump (package:flutter_test/src/binding.dart:1987:12)\n#3 WidgetTester.pumpAndSettle.<anonymous closure> (package:flutter_test/src/widget_tester.dart:730:23)\n#4 _rootRun (dart:async/zone.dart:1414:13)\n#5 _CustomZone.run (dart:async/zone.dart:1317:19)\n#6 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:74:41)\n#7 WidgetTester.pumpAndSettle (package:flutter_test/src/widget_tester.dart:723:27)\n#8 ElementHelper.pumpAndTrySettle (package:appium_flutter_server/src/utils/element_helper.dart:560:20)\n#9 ElementHelper.waitFor (package:appium_flutter_server/src/u... 2025-08-27 15:16:16:237 [W3C] Matched W3C error code 'unknown error' to UnknownError 2025-08-27 15:16:16:238 [AppiumFlutterDriver@3592] Encountered internal error running command: UnknownError: An unknown server-side error occurred while processing the command. Original error: 'package:flutter_test/src/binding.dart': Failed assertion: line 1987 pos 12: 'inTest': is not true. at errorFromW3CJsonCode (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/protocol/errors.js:1110:25) at ProxyRequestError.getActualError (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/protocol/errors.js:979:14) at JWProxy.command (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/jsonwp-proxy/proxy.js:357:19) at processTicksAndRejections (node:internal/process/task_queues:95:5) at AppiumFlutterDriver.findElOrEls (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/build/src/commands/element.js:47:25) at AppiumFlutterDriver.findElOrElsWithProcessing (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/basedriver/commands/find.ts:60:12) at AppiumFlutterDriver.findElement (/home/ltadmin/Documents/appium/2.2.1-29-7-25/node_modules/appium-flutter-integration-driver/node_modules/@appium/base-driver/lib/basedriver/commands/find.ts:75:12) 2025-08-27 15:16:16:238 [HTTP] <-- POST /wd/hub/session/e57b3054-88be-4e1d-b242-eaf4562bf82d/element 500 25 ms - 1682
capabilities
2025-08-27 15:14:34:258 [AndroidUiautomator2Driver@4a39] Creating session with W3C capabilities: { "alwaysMatch": { "platformName": "android", "appium:adbExecTimeout": "120000", "appium:autoAcceptAlerts": true, "appium:autoGrantPermissions": true, "appium:automationName": "FlutterIntegration", "appium:chromeOptions": { "args": [] }, "appium:chromedriverExecutableDir": "/appium/assets/drivers/chromedriver", "appium:chromedriverPorts": [ [ 11001, 11049 ] ], "appium:deviceName": "Galaxy S24", "appium:enableWebviewDetailsCollection": false, "appium:ensureWebviewsHavePages": false, "appium:headless": false, "appium:mode": "cloud", "appium:nativeWebScreenshot": true, "appium:newCommandTimeout": "0", "appium:orientation": "PORTRAIT", "appium:platformVersion": "14", "appium:systemPort": "12063", "appium:udid": "RFCXA097J4J", "appium:uiautomator2ServerLaunchTimeout": "60000", "appium:waitForQuiescence": false }, "firstMatch": [ {} ] }
appium_main.dart
`import 'package:appium_flutter_server/appium_flutter_server.dart'; import 'package:flutter_bloc/flutter_bloc.dart'; import 'package:flutter_test/flutter_test.dart'; import 'package:lmn_crew/src/app.dart'; import 'package:lmn_crew/src/config/app_env_config.dart'; import 'package:lmn_crew/src/injection/injection.dart'; Future main() async { // Ensure the app is running with test binding await initializeTest( callback: (WidgetTester tester) async { const env = String.fromEnvironment("env", defaultValue: Env.qa); await configureDependencies(env: env); Bloc.transformer = (events, mapper) => events.asyncExpand(mapper); await tester.pumpWidget(const App()); }, ); }'
Sample Code
await browser.flutterScrollTillVisible({ finder: await browser.flutterByText("Widget Label") as unknown as WebdriverIO.Element, scrollDirection: "down" });
const dummyWidget = await browser.flutterByValueKey$("widgetKey");
await dummyWidget.click();
✅ Expected Behavior
Flutter integration APIs (pump, enterText, click, etc.) should run within test context without throwing "inTest" assertion failures.
Appium should not need to retry due to leaked async calls.
❌ Actual Behavior
Calls to pump / enterText trigger guarded async leaks.
Test API calls are considered out-of-scope.
Tests fail inconsistently with 500 UnknownError.