Flutter Finder Doesn't Raise Exception if Element Doesn't Exists

[sonumuto]

Hi,
We are trying to automate a Flutter/Native Android application using Python. We have noticed that if element does not exist in the current page, it does not raise an exception which differs from the expected behavior of the find element. It seems like application is stuck in find element.

import unittest
import time
from typing import Dict, Any
 
from appium import webdriver
from appium.options.common import AppiumOptions
from appium.webdriver.common.appiumby import AppiumBy
from appium_flutter_finder import FlutterFinder, FlutterElement
 
cap: Dict[str, Any] = {
    'platformName': 'Android',
    'automationName': 'flutter',
    'uuid': '**********',
    'platformVersion': '13',
    'app': '/Users/test/Desktop/app-organization.apk',
}
appium_server_url = 'http://localhost:4723'
 
driver = webdriver.Remote(appium_server_url, options=AppiumOptions().load_capabilities(cap))
 
###############Flutter##################################
#Change the context to FLUTTER
driver.switch_to.context("NATIVE_APP")
driver.switch_to.context("FLUTTER")
#Init Fluttter finder class
finder = FlutterFinder()
 
key_finder = finder.by_text('start')
button_element = FlutterElement(driver, key_finder)
print(button_element.text)
button_element.click()
 
key_finder = finder.by_text("Skip")
goto_next_route_element = FlutterElement(driver, key_finder)
goto_next_route_element.click()
###############Flutter##################################
###############Native##################################
driver.switch_to.context("NATIVE_APP")
#Wait async operation
time.sleep(2)
 
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/base_button").click()
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/et").send_keys('zzzzzzzzz')
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/btn_continue").click()
 
driver.switch_to.context("FLUTTER")
 
textfield_key_finder = finder.by_value_key("xNameTextFieldKey")
textfield_element = FlutterElement(driver, textfield_key_finder)
textfield_element.send_keys("Example Text")
time.sleep(3)
 
driver.implicitly_wait(20)
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/et_x").send_keys('[email protected]')
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/et_y").send_keys('53634643')
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/btn_z").click()
 
driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/btn_a").click()
driver.implicitly_wait(20)
try:
    driver.find_element(by=AppiumBy.ACCESSIBILITY_ID, value="Show me").click()
except:
    driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/btn_w").click()
 
try:
    driver.find_element(by=AppiumBy.ID, value="com.organization.app:id/btn_w").click()
except:
    pass
 
driver.find_element(by=AppiumBy.ACCESSIBILITY_ID, value="Settings").click()
 
driver.find_element(by=AppiumBy.ACCESSIBILITY_ID, value="settingsTextKey").click()
 
###############Native##################################
#Switch the context to FLUTTER
 
###############FLUTTER##################################
driver.switch_to.context("FLUTTER")
 
textfield_key_finder = finder.by_value_key("TextFieldKey")
textfield_element = FlutterElement(driver, textfield_key_finder)
textfield_element.send_keys("Example Text")
time.sleep(3)
 
textfield_element.clear()
 
pw_key_finder = finder.by_value_key("extFieldKey")
pw_element = FlutterElement(driver, pw_key_finder)
pw_element.send_keys("58475684")
 
 
time.sleep(10)
driver.quit()

[sonumuto]

Any ideas on possible root causes? @KazuCocoa

[KazuCocoa]

I guess it is flutter_driver internal behavior. #693 could be a workaround.

[KazuCocoa]

https://github.com/appium/appium-flutter-driver?tab=readme-ov-file#troubleshooting added the waitFor method as part of troubleshooting. The docs can be improved later of course.

[sonumuto]

Thanks Kazu!