Python bindings for the rokuality platform. End to end automation for Roku, Xbox, Tizen TV, LG webOS, and more!
Project description
Rokuality Python - End to End Automation for Roku, XBox, Tizen TV, and LG webOS!
The Rokuality platform allows you to distribute Roku, XBox, Tizen TV, and LG webOS end to end tests across multiple devices on your network. Our platform's goal is to provide a low cost solution for various video streaming platforms that otherwise don't offer an easily automatable solution! Download the Rokuality App and start writing tests!
Getting started: Get the Rokuality App
The Rokuality App operates in 2 modes within a standalone app for Mac and Windows: First as a test debugger/builder which allows you to debug your apps, and Second, as a server which can be used to execute/distribute your tests to your devices.
Once you have installed the Rokuality app, you can start a server which listens for any incoming tests that you've written:
Note that you can start and run the server headlessly if you download the standalone jar and provide the serveronly=true
system property during launch. Useful if running on a linux machine or if running from a build/test server environment.
java -Dserveronly=true -Dport=7777 -jar /path/to/Rokuality_version.jar
Optionally, you can provide a desired set of capabilities and start a manual test session against your device. The test debugger includes a number of UI tools that are geared to help you construct your automated tests:
Device requirements: Roku
Automated testing on Roku requires that you have Developer mode enabled on your device. Enabling developer mode on your Roku device is very straight forward. Keep track of your device username and password as created during the basic walkthrough as you'll need them to pass to your DeviceCapabilities at driver startup. Once you've enabled developer mode on your device you should be able to hit the device console page at http://yourrokudeviceip - Once that's done you are all set for automation!
Device requirements: XBox
Automated testing on XBox requires the following:
- Google Chrome browser installed on the machine running the Rokuality server. The server uses headless chrome to handle various tasks like installing/launching/uninstalling the XBox appxbundles. You won't physically see chrome launch as it will run in headless mode.
- Your XBox must be in dev kit mode. Enabling developer mode on your XBox is straight forward but it does require a 19$ Microsoft developer account which will allow you to automate 3 boxes from a single dev account.
- You must have the XBox dev console available for remote access with NO username/password set. If properly setup you should be able to access your dev console remotely at
https://yourxboxip:11443
Device requirements: Tizen TV
Automated testing on Tizen TV requires the following:
- Google Chrome browser installed on the machine running the Rokuality server. The server uses headless chrome to handle various tasks like installing/launching/uninstalling the Tizen TV .wgt app packages. You won't physically see chrome launch as it will run in headless mode.
- You must have Tizen Studio installed on your machine.
- Your Tizen TV must be in developer mode and be able to be reached from your machine running the Rokuality app. If setup correctly you should be able to connect to the device from the command line via
sdb connect your_tizen_tv_machine_ip_address:26101
.
Device requirements: LG webOS
Automated testing on LG webOS TV's requires the following:
- You must install the LG webOS Developer SDK
- You must enable developer mode on the tv.
- You must enable/allow "LG Connect Apps" on your TV. Typically found at settings>>all settings>>network>>LG connect apps.
Getting started: Add the bindings to your Project
To use Rokuality in your tests or application, install the rokuality-python
dependency:
pip install rokuality-python
The Basics:
The Rokuality bindings operate via Image Based Object Recognition and OCR techniques to identify 'elements' on the device screen and return them to your test scripts as Objects for verification and interaction. The project is modeled after the Selenium/Appium structure so if you've used those toolsets for browsers/mobile devices previously - this framework will look and feel very comfortable to you. See the Roku example tests or XBox example tests or Tizen TV example tests or LG webOS example tests for a full list of samples.
Declare a driver to connect to the server:
'''Roku'''
driver = RokuDriver("http://yourserverurl:yourrunningserverport", self.capabilities)
'''XBox'''
driver = XBoxDriver("http://yourserverurl:yourrunningserverport", self.capabilities)
'''Tizen'''
driver = TizenTVDriver("http://yourserverurl:yourrunningserverport", self.capabilities)
'''LG webOS'''
driver = LGWebOSDriver("http://yourserverurl:yourrunningserverport", self.capabilities)
This will take care of installing/launching your device app package, ensure the device is available and ready for test, and start a dedicated session on your device as indicated via your DeviceCapabilities object. See Device Capabilities for an explanation of what capabilities are available for your driver startup.
Finding elements:
There are a variety of ways to locate elements depending on your device type. The 2 primary ways available to all devices are:
- TEXT
driver.finder().find_element(By().text("text to find on screen"))
In this example, the Rokuality server will capture the image from your device screen, and then perform an evaluation against the found text within that image and match it against your locator. If your locator text is NOT found, then a NoSuchElementException will be thrown. Note that this will use Google Vision, Amazon Rekognition, or Amazon Textract ocr engines as provided by your capability object. See Using Google Vision, Using Amazon Rekognition, or Using Amazon Textract for those details.
- IMAGE - local image snippet file
driver.finder().find_element(By().image("/path/to/your/image/snippet.png"))
In this example, you can provide the path to an image snippet that you expect to be contained within your device screen. The server will then ship this image snippet to itself, capture the device screen, and evaluate if it exists on the device.
OR
- IMAGE - url to to an image snippet file
driver.finder().find_element(By().image("http://urltoyourimagesnippet.png"))
In this example, you can provide a url to your locator image snippet and the server will download that image and evaluate it against the device screen. Useful for those more dynamic testing situations where you may want to query your application feeds to get the dynamic app images for evaluation, or if you want to keep your image based locators in a remote repository.
Finding elements with Roku WebDriver:
Optionally when testing on Roku you can provide the following native based locator types:
element_by_text = roku_driver.finder().find_element(RokuBy().text('text to search for'))
element_by_tag = roku_driver.finder().find_element(RokuBy().tag('tag'))
element_by_attribute = roku_driver.finder().find_element(RokuBy().attribute('attribute', 'attribute value'))
Finding elements with Tizen TV, LG webOSand HTML Capturing:
When testing on Tizen TV or an LG webOS TV, you can provide the following CSS or XPath locators:
element_by_css = driver.finder().find_element(HTMLBy().css('css locator'))
element_by_xpath = driver.finder().find_element(HTMLBy().xpath('xpath locator'))
Finding multi match elements:
You can search for multiple element matches from a singular locator and return the results of match to an Element collection as follows:
elements = driver.finder().find_elements(By().text("locator that will return multiple matches"))
When using find_elements
, a NoSuchElementException will NOT be thrown to the user in the event that an element is not found. In that event the collection will be empty. So this method can be used to determine if an element is present or not:
elements = driver.finder().find_elements(By().text("locator"))
if (len(elements) == 0):
print("element is not present")
Elements as objects:
A found element can be stored to an object and additional details about it can be retrieved:
element = self.roku_driver.finder().find_element(By().text("Hello World!"))
print("element x: " + str(element.get_x()))
print("element y: " + str(element.get_y()))
print("element width: " + str(element.get_width()))
print("element height: " + str(element.get_height()))
print("element confidence: " + str(element.get_confidence()))
print("element text: " + element.get_text())
The element details include the elements location and size details as found on the device, the text contained within the match (relevent if an image snippet locator was provided), and the confidence score of the match with higher values indicating the confidence in your find:
368
319
45
19
91.33713
Hello World!
Sending remote control commands to the device - Roku and XBox:
To send remote button presses to the device you can do the following:
'''roku'''
driver.remote().press_button(RokuButton.SELECT)
'''xbox'''
driver.remote().press_button(XBoxButton.A)
Sending remote control commands to the device - Tizen TV:
For Tizen, you must first authorize the TV and receive an api token which can then be used for all your driver sessions. You'll need to manually accept the alert one time before you can proceed. Note that the api token will be valid for as long as the TV is powered on and awake.
'''to performan remote control interactions on a tizen tv
first you need to authorize the tv manually, which returns
an api token you can pass to your tests'''
TizenTVRemoteAuthorizer remoteAuthorizer = new TizenTVRemoteAuthorizer("http://localhost:7777", "your_tizen_tv_ip_address");
tizen_tv_remote_authorizer = TizenTVRemoteAuthorizer('http://localhost:7777', 'your_tizen_tv_ip_address')
'''This will trigger a manual alert on your Tizen TV that you will have 60 seconds to accept once accepted it will return an api token which you can pass to the 'DeviceAPIToken' capability for your automated tests.'''
api_key = tizen_tv_remote_authorizer.authorize()
Additionally, you can use the Rokuality UI test builder to authorize your remote and retrieve your DeviceAPIToken
during a live test session:
Sending remote control commands to the device - LG webOS:
For LG webOS, there is a one time manual confirmation prompt that must be accepted when you send a remote command. Once you accept this on your tv - the remote key will be saved for your machine and all future requests won't require a prompt.
driver.remote().press_button(LGWebOSButton.HOME)
All remote commands are available. See roku remote command or xbox remote command or tizen remote command or lg webos remote command for all available remote buttons. Also you can send literal characters to the device if you need to interact with a Roku/XBox/LG webOS search selector (Note the virtual keyboard must be visible on the screen at the time this call is made):
driver.remote().send_keys("typing out hello world on a search screen")
Note that by default, the time delay between multiple remote control commands is 0 milliseconds, meaning multiple remote control commands will happen as quickly as possible. This can in some cases lead to test flake due to multiple commands happening back to back too quickly. If this is happening, you can add a delay in between remote control button presses as follows:
"""
sets a delay between remote control button presses to 2 seconds. this will last for the duration of the session or until a new value is set. If not set, defualts to 0
"""
driver.options().set_remote_interact_delay(2000)
Getting screen artifacts:
Various methods exist for getting screen artifacts such as the screen image, sub screen image, screen recording during test, and screen text:
'''get screen size'''
driver.screen().get_screen_size()
'''get screen image'''
driver.screen().get_image()
'''get the screen sub image from starting x,y with width/height'''
driver.screen().get_image_sub_screen(1, 1, 300, 300)
"""get the screen recording of the test session from start to now
note that the screen recordings are created by stitching the collected device screenshots
together and video quality won't be the best"""
driver.screen().get_recording()
'''get the xml page source of the channel. (Roku, TizenTV, and LG webOS)'''
xml_source = driver.screen().get_page_source()
Getting screen text:
Screen text of the device is returned as a collection of ScreenText objects as found on the screen. Each ScreenText item will be an object containing details about the found device text such as location, height, and width of the word as found on the device screen:
screen_texts = roku_driver.screen().get_text()
for screen_text in screen_texts:
x = screen_text.get_x()
y = screen_text.get_y()
width = screen_text.get_width()
height = screen_text.get_height()
confidence = screen_text.get_confidence()
Alternatively you can get the entire device screen as a full string via driver.screen().get_text_as_string()
Getting information about the media player (ROKU ONLY):
For Roku devices, it's possible to get details about your media player in flight through the Roku WebDriver rest api which can be accessed in your test code as follows:
'''gets information about the media in flight including state, bitrate, encoding information, and much much more!'''
media_player_info = self.roku_driver.info().get_media_player_info()
assert media_player_info.is_error() == False
assert media_player_info.is_live() == False
assert media_player_info.get_state() == 'none'
Getting performance data from your application during test (ROKU ONLY):
Roku provides a way to measure your app's cpu and memory utilization through their brightscript profiler. Our platform allows you to access the brightscript performance profile during the course of your test. To utilize this functionality you must provide the 'EnablePerformanceProfiling' capability on test session start and set the value to true. This will take your provided sideloadable .zip package, update the manifest with the necessary values for profile capturing, and then recompile for automation on your device.
self.capabilities.add_capability('EnablePerformanceProfiling', True)
self.roku_driver = RokuDriver(self.SERVER_URL, self.capabilities)
performance_profile = self.roku_driver.info().get_performance_profile()
performance_profile_mb = os.path.getsize(performance_profile) / 1000000
print("Performance profile MB size: " + str(performance_profile_mb))
Once you've retrieved your .bsprof file during test - this file can be uploaded to Roku's profiler visualization tool to see the performance data in a friendly user format.
Getting debug log info (ROKU ONLY):
For Roku devices, it's possible to get the debug logs as follows:
log_content = self.driver.info().get_debug_logs()
Testing Deep Links (ROKU ONLY):
It's possible to test your Roku deep links by providing the ContentID
and MediaType
capabilities for the deep like you wish to launch. Upon session start the channel should be launched with the deep link content already loaded. If the deep link fails to load a SessionNotStartedException
will be thrown with details.
capabilities = DeviceCapabilities()
capabilities.add_capability('ContentID', 'idofcontent')
capabilities.add_capability('MediaType', 'mediatypeofcontent')
driver = RokuDriver(SERVER_URL, capabilities)
'''the application should be launched with the deep link content loaded'''
Device Capabilities explained:
Various capabilities and values can be provided and passed to your driver instance at startup. Some of them are required and others are optional. The following are the minimum capabilities required to start a driver session.
Roku
'''init a capability object'''
capabilities = DeviceCapabilities()
'''indicates you want a Roku test'''
capabilities.add_capability("Platform", "Roku")
'''set the path or url to your sideloadable .zip'''
capabilities.add_capability("AppPackage", "path/or/url/to/your/apppackage")
'''set your roku ip address'''
capabilities.add_capability("DeviceIPAddress", "yourdeviceipaddress")
'''set your device username and password'''
capabilities.add_capability("DeviceUsername", "yourdeviceusername")
capabilities.add_capability("DevicePassword", "yourdevicepassword")
'''pass the capabilities and start your driver'''
driver = RokuDriver("http://yourserverurl:yourrunningserverport", capabilities)
Xbox
'''init a capability object'''
capabilities = DeviceCapabilities()
'''indicates you want a XBox test'''
capabilities.add_capability("Platform", "XBox")
'''set the path or url to your .appxbundle package to install'''
capabilities.add_capability("AppPackage", "path/or/url/to/your/apppackage")
'''the app id - will be the friendly app name of your appxbundle'''
capabilities.add_capability("App", "appid")
'''set your xbox ip address'''
capabilities.add_capability("DeviceIPAddress", "yourdeviceipaddress")
'''pass the capabilities and start your driver'''
driver = XBoxDriver("http://yourserverurl:yourrunningserverport", capabilities)
Tizen TV
'''init a capability object'''
capabilities = DeviceCapabilities()
'''indicates you want a Tizen TV test'''
capabilities.add_capability("Platform", "Tizen")
'''set the path or url to your .wgt package to install'''
capabilities.add_capability("AppPackage", "/path/or/url/to/your/package.wgt")
'''the device ip address '''
capabilities.add_capability("DeviceIPAddress", "your tizen device ip address")
'''the device id as obtained via sdb devices when your tv is connected'''
capabilities.add_capability("DeviceID", "your tizen device id")
'''the ip address of the machine running the rokuality server'''
capabilities.add_capability("ServerIPAddress", "your host machine ip address")
'''device api token'''
capabilities.add_capability("DeviceAPIToken", "your device api token")
'''pass the capabilities and start your driver'''
driver = TizenTVDriver("http://yourserverurl:yourrunningserverport", capabilities)
LG webOS
'''init a capability object'''
capabilities = DeviceCapabilities()
'''indicates you want an LG webOS test'''
capabilities.add_capability("Platform", "LGwebOS")
'''set the path or url to your zipped up webOS project note that the rokuality app will take care of generating an installable IPK from your provided project'''
capabilities.add_capability("AppPackage", "/path/or/url/to/your/webOSproject.zip")
'''the device ip address '''
capabilities.add_capability("DeviceIPAddress", "your lg webos tv device ip address")
'''the device id as generated during developer mode setup. can be obtained via 'ares-setup-device --list' when your tv is connected'''
capabilities.add_capability("DeviceID", "your lg webos tv device id")
'''the ip address of the machine running the rokuality server'''
capabilities.add_capability("ServerIPAddress", "your host machine ip address")
'''pass the capabilities and start your driver'''
driver = LGWebOSDriver("http://yourserverurl:yourrunningserverport", capabilities)
Capability | Description | Required Or Optional | Notes |
---|---|---|---|
Platform | Indicates the target platform for the tests. | Required | String - Options are 'Roku, 'XBox', 'Tizen', 'LGwebOS' |
AppPackage | The sideloadable zip to be installed (Roku), or the .appxbundle (XBox), or the .wgt (Tizen TV), or the zipped up webOS project directory for LG webOS. Must be a valid file path OR a valid url. | Required for Roku and XBox, Tizen, and LGwebOS - IF the 'App' capability is not provided. Note that for LGwebOS - simply zip up your project directory and the rokuality app will take care of generating and installing a LGwebOS IPK file during the installation process | String |
App | The friendly id of your app for Roku and XBox. For Roku this cap is optional. If you provide this cap and ommit the 'AppPackage' cap then the device will attempt to launch an already installed channel - Note that this can be an installed production channel id which you can retrieve from your device via curl http://yourdeviceip:8060/query/apps . For XBox this cap is always required and MUST be the app id of your installed .appxbundle - if you ommit the 'AppPackage' cap then the device will attempt to launch an already installed appxbundle matching this id. |
Roku = Optional. XBox = Required. Tizen = Ignored. LGwebOS = Ignored | String |
DeviceIPAddress | The ip address of your Roku, XBox, Tizen TV, or LG webOS TV. | Required for Roku or XBox or Tizen or LG webOS | String - Your device MUST be reachable from the machine running the Rokuality server. |
DeviceUsername | Roku Only - The dev console username created when you enabled developer mode on your device. | Required for Roku | String |
DevicePassword | Roku Only - The dev console password created when you enabled developer mode on your device. | Required for Roku | String |
ImageMatchSimilarity | An optional image match similarity default used during Image locator evaluations. A lower value will allow for greater tolerance of image disimilarities between the image locator and the screen, BUT will also increase the possibility of a false positive. | Optional | Double. Defaults to .90 |
ScreenSizeOverride | An optional 'WIDTHxHEIGHT' cap that all screen image captures will be resized to prior to match evaluation. Useful if you want to enforce test consistence across multiple device types and multiple developer machines or ci environments. | Optional | String - I.e. a value of '1800x1200' will ensure that all image captures are resized to those specs before the locator evaluation happens no matter what the actual device screen size is. |
OCRType | The OCR type - Currently supported options are 'GoogleVision', 'AmazonRekognition', or 'AmazonTextract'. If the capability is set to 'GoogleVision' you MUST have a valid Google Vision account setup and provide the 'GoogleCredentials' capability with a valid file path to the oath2 .json file with valid credentials for the Google Vision service. If the capability is set to 'AmazonRekognition' or 'AmazonTextract' then you MUST have a valid AWS account with an IAM role set with Rekognition or Textract priveleges and an AWS api access key id and secret key in file format you can provide, and you MUST provide the 'AWSCredentials' capability with a valid file path to this credentials file. | Optional | String |
GoogleCredentials | The path to a valid .json Google Auth key service file. | Optional but Required if the 'OCRType' capability is set to 'GoogleVision' | The .json service key must exist on the machine triggering the tests. See Using Google Vision for additional details. |
AWSCredentials | The path to a valid AWS credential file with an api key id and secret key. | Optional but Required if the 'OCRType' capability is set to 'AmazonRekognition' or 'AmazonTextract' | The credential file must exist on the machine triggering the tests. See Using Amazon Rekognition or Using Amazon Textract for additional details. |
MirrorScreen | If provided with a widthxheight value, then a window will be launched on the user's desktop showing the test activity in real time for the duration of the test session. Useful for debugging tests on remote devices. | Optional | String - 'widthxheight' format. i.e. '1200x800' will launch a screen mirror with width 1200, and height 800. |
EnablePerformanceProfiling | Roku only. If provided your sideloadable .zip package will be updated for performance profiling. Then during the course of the execution you can retrieve the .bsprof file with CPU and memory utilization data from your channel. | Optional | Boolean - true to allow for performance capturing. Defaults to false. |
ContentID | Roku only. A content id of a Roku deep link to load on session start. | Optional - If provided you must also provide the 'MediaType' capability. | String |
MediaType | Roku only. The media type of a Roku deep link to load on session start. | Optional - If provided you must also provide the 'ContentID' capability. | String |
AppPackageType | XBox only. Used if AppPackage is provided and indicates if the package is a 'appx' or 'appxbundle'. | Optional - Valid values are 'appx' or 'appxbundle'. If this cap is not provided we assume the provided package is an 'appxbundle'. | String |
ImageCollectorInterval | A value in milliseconds that acts as a delay between image collection during a test session. If you experience 400 http errors during image collection, a small pause here can help alleviate this. | Optional - A delay in milliseconds i.e. 250. Defaults to 0 | Integer |
DeviceID | Tizen and LGwebOS Only - The device id of your Tizen TV or LG webOS TV. For Tizen you can discover via 'sdb devices' when your TV is connected. For LGwebOS you can discover via 'ares-setup-device -list' | Required for Tizen TV and LGwebOS - ignored otherwise | String |
DeviceAPIToken | Tizen Only - The api token of your authorized Tizen TV remote. | Required for Tizen TV - ignored otherwise | String |
ServerIPAddress | Tizen and LG webOS Only - The local ip address of your machine running the Rokuality app. Necessary as this allows us to update your application wgt package (Tizen) or your zipped web package (LG webOS) so that it can communicate with your running Rokuality app and in turn query your app's html5 canvas for elements. | Required for Tizen TV and LG webOS - ignored otherwise | String |
TizenStudioHome | Tizen Only - The absolute path to your 'tizen-studio' home directory. Note that if you installed in the default directories you can ignore this capability and we will attempt to find the relevant tools in those locations. But if you changed the installation directories while installing, you can provide this capability pointing to the alternate location | Optional for Tizen TV - ignored otherwise | String |
LGWebOSSDKHome | LG webOS Only - The absolute path to your 'web os sdk' home directory as installed during your LG webOS setup. Note that if you installed in the default directories you can ignore this capability and we will attempt to find the relevant tools in those locations. But if you changed the installation directories while installing, you can provide this capability pointing to the alternate location | Optional for LG webOS - ignored otherwise | String |
Element Timeouts and Polling:
There are two main options when it comes to element timeouts and polling
Timeouts - By default the element timeout is set to 0 milliseconds, meaning if the driver fails to find an element immediately, it will throw a NoSuchElement exception. But a better practice is to set a implicit wait timeout so the driver will poll for a duration, trying to find the element before it fails and throws the NoSuchElementException:
'''will fail immediately'''
driver.finder().find_element(By().text("no such text"))
vs
'''will fail after 5 seconds'''
driver.options().set_element_timeout(5000)
driver.finder().find_element(By().text("no such text"))
It is generally recommended to set respective timeouts to reduce test flake, but setting the values too high can increase test duration.
Additionally you can set the interval of how often the element search polling will happen. In this example, the same timeout is applied but the element polling will happen every second. If the polling interval is ommited the default is 250 milliseconds.
'''will fail after 5 seconds polling every second'''
driver.options().set_element_timeout(5000)
driver.options().set_element_poll_interval(1000)
driver.finder().find_element(By().text("no such text"))
Using Google Vision OCR:
You can use Google Vision as your OCR engine during test provided you have a valid Google Vision account setup. You must also set the path to your .json service file containing your service key in your DeviceCapabilities prior to driver start.
capabilities = DeviceCapabilities()
capabilities.add_capability("OCRType", "GoogleVision")
capabilities.add_capability("GoogleCredentials", "/path/to/your/vision/authkey.json")
Using Amazon Rekognition OCR:
You can use Amazon Rekognition as your OCR engine during test provided you have a valid AWS Account account setup with an api key with an IAM role set to allow Rekognition use. You must then create the standard aws credential file with your api key id and secret key.
capabilities = DeviceCapabilities()
capabilities.add_capability("OCRType", "AmazonRekognition")
capabilities.add_capability("AWSCredentials", "/path/to/your/aws/credential/file")
Using Amazon Textract OCR:
You can use Amazon Textract as your OCR engine during test provided you have a valid AWS Account account setup with an api key with an IAM role set to allow Textact use. You must then create the standard aws credential file with your api key id and secret key.
capabilities = DeviceCapabilities()
capabilities.add_capability("OCRType", "AmazonTextract")
capabilities.add_capability("AWSCredentials", "/path/to/your/aws/credential/file")
Failing to find elements? :
Image Based Locators By().image("pathorurltoyoourimagesnippet.png")
- Make sure your locator image snippet is in a valid image format. Most tests use .png format so for best results please use locators of this type.
- Make sure that your image snippets are in good quality and you are doing an apples to apples comparison of the image snippet you wish to find within the screen image. Some image snipping tools are better than others, so if capturing static image snippets for later locator use be wary of the tools you're using. Alternatively, you can get a subscreen section from the device during test and save it as a static locator for later use.
locator_to_use_later = driver.screen().get_image_sub_screen(40, 80, 160, 220)
- You can optionally set the "ImageMatchSimilarity" DeviceCapability at driver startup which will set a tolerance for image comparisons. Lower values will mean a greater likelihood of getting a match, but too low of a value will introduce a false positive.
capabilities.add_capability("ImageMatchSimilarity", .85)
Text Based Locators By().text("text to search for")
- Check that your string isn't too complicated, i.e. a locator of
By().text("hello world")
is much more likely to be found than a locator ofBy().text("he!!O W@rLd!#!")
. Also, single world locators are better than multiple world locators but we continue to work on the server back end to improve the reliability. - You can access the entire decoded device screen text by
driver.screen().get_text_as_string()
. If your locator is present in the string but not found during test, please log a bug on the issues page and we'll investigate. - By default the OCR evaluations happen against the entire device screen but sometimes it's better to narrow the scope of the find to a smaller region of the screen to get better results. This can be done with
driver.finder().find_element_sub_screen(by, 100, 500, 300, 200)
which will limit the scope of the find to that subset of the screen and likely return better results.
Server timeouts and orphaned sessions:
At the end of every driver session, you should close the driver and cleanup all session data by calling the stop method:
'''stop the driver and clean up all resources'''
driver.stop()
But if you don't a safety exists to eventually clean up those assets. The server session will listen for new commands and will timeout if no commands for the session have been received for a specified duration. The default command timeout is set to 60 seconds - meaning if a session is started and no commands are sent to it for 60 seconds, then the session will automatically be terminated and released. You can increase/decrease this time by setting the 'commandtimeout' option when you launch the server.
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