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* A [Python virtual env](https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/) is recommended. <i><ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/virtualenv_instructions.md">See shortcut</a>.</i>
SeleniumBase can download a webdriver to the [seleniumbase/drivers](https://github.com/seleniumbase/SeleniumBase/tree/master/seleniumbase/drivers) folder with the ``install`` command:
* You need a different webdriver for each web browser you want to run automation on: ``chromedriver`` for Chrome, ``edgedriver`` for Edge, ``geckodriver`` for Firefox, ``operadriver`` for Opera, and ``iedriver`` for Internet Explorer.
* If you have the latest version of Chrome installed, get the latest chromedriver (<i>otherwise it defaults to chromedriver 2.44 for compatibility reasons</i>):
(See [seleniumbase.io/seleniumbase/console_scripts/ReadMe/](https://seleniumbase.io/seleniumbase/console_scripts/ReadMe/) for more information on SeleniumBase console scripts, such as ``seleniumbase install`` and ``seleniumbase mkdir``.)
* On Linux ``--headless`` is the default behavior (running with no GUI). You can also run in headless mode on any OS. If your Linux machine has a GUI and you want to see the web browser as tests run, add ``--headed`` or ``--gui``.
For the complete list of SeleniumBase methods, see: <b><ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/method_summary.md">Method Summary</a></b>
SeleniumBase automatically handles common WebDriver actions such as spinning up web browsers and saving screenshots during test failures. (<i><ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/customizing_test_runs.md">Read more about customizing test runs</a>.</i>)
You can interchange ``pytest`` with ``nosetests`` for most tests, but using ``pytest`` is recommended. (``chrome`` is the default browser if not specified.)
All Python methods that start with ``test_`` will automatically be run when using ``pytest`` or ``nosetests`` on a Python file, (<i>or on folders containing Python files</i>). You can also be more specific on what to run within a file by using the following: (<i>Note that the syntax is different for pytest vs nosetests.</i>)
SeleniumBase methods automatically wait for page elements to finish loading before interacting with them (<i>up to a timeout limit</i>). This means you <b>no longer need</b> random <span><b>time.sleep()</b></span> statements in your scripts.
<imgsrc="https://img.shields.io/badge/Flaky Tests%3F-%20NO%21-11BBDD.svg"alt="NO MORE FLAKY TESTS!"/>
SeleniumBase includes a solution called <b><ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/masterqa/ReadMe.md">MasterQA</a></b>, which speeds up manual testing by having automation perform all the browser actions while the manual tester handles validatation.
If the example test is moving too fast for your eyes, you can run it in **Demo Mode** by adding ``--demo`` on the command-line, which pauses the browser briefly between actions, highlights page elements being acted on, and lets you know what test assertions are happening in real time:
``Pytest`` includes test discovery. If you don't specify a specific file or folder to run from, ``pytest`` will search all subdirectories automatically for tests to run based on the following matching criteria:
(For more details, see the full list of command-line options **[here](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/plugins/pytest_plugin.py)**.)
During test failures, logs and screenshots from the most recent test run will get saved to the ``latest_logs/`` folder. Those logs will get moved to ``archived_logs/`` if you add --archive_logs to command-line options, or have ARCHIVE_EXISTING_LOGS set to True in [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py), otherwise log files with be cleaned up at the start of the next test run. The ``test_suite.py`` collection contains tests that fail on purpose so that you can see how logging works.
An easy way to override seleniumbase/config/settings.py is by using a custom settings file.
Here's the command-line option to add to tests: (See [examples/custom_settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/custom_settings.py))
For running tests outside of the SeleniumBase repo with **Pytest**, you'll want a copy of **[pytest.ini](https://github.com/seleniumbase/SeleniumBase/blob/master/pytest.ini)** on the root folder. For running tests outside of the SeleniumBase repo with **Nosetests**, you'll want a copy of **[setup.cfg](https://github.com/seleniumbase/SeleniumBase/blob/master/setup.cfg)** on the root folder. (Subfolders should include a blank ``__init__.py`` file.) These files specify default configuration details for tests. (For nosetest runs, you can also specify a .cfg file by using ``--config``. Example ``nosetests [MY_TEST].py --config=[MY_CONFIG].cfg``)
As a shortcut, you'll be able to run ``seleniumbase mkdir [DIRECTORY_NAME]`` to create a new folder that already contains necessary files and some example tests that you can run. Example:
You'll notice that a logs folder, "latest_logs", was created to hold information about the failing test, and screenshots. During test runs, past results get moved to the archived_logs folder if you have ARCHIVE_EXISTING_LOGS set to True in [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py), or if your run tests with ``--archive-logs``. If you choose not to archive existing logs, they will be deleted and replaced by the logs of the latest test run.
(NOTE: You can add ``--show-report`` to immediately display Nosetest reports after the test suite completes. Only use ``--show-report`` when running tests locally because it pauses the test run.)
If you wish to use a proxy server for your browser tests (Chrome and Firefox only), you can add ``--proxy=IP_ADDRESS:PORT`` as an argument on the command-line.
To make things easier, you can add your frequently-used proxies to PROXY_LIST in [proxy_list.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/proxy_list.py), and then use ``--proxy=KEY_FROM_PROXY_LIST`` to use the IP_ADDRESS:PORT of that key.
If you wish to change the User-Agent for your browser tests (Chrome and Firefox only), you can add ``--agent="USER AGENT STRING"`` as an argument on the command-line.
Learn about <ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/examples/tour_examples/ReadMe.md">SeleniumBase Interactive Walkthroughs</a> (in the ``examples/tour_examples`` folder). It's great for prototyping a website onboarding experience.
* You can setup a [Jenkins](https://jenkins.io/) build server for running tests at regular intervals. For a real-world Jenkins example of headless browser automation in action, check out the <ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/integrations/azure/jenkins/ReadMe.md">SeleniumBase Jenkins example on Azure</a> or the <ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/integrations/google_cloud/ReadMe.md">SeleniumBase Jenkins example on Google Cloud</a>.
* You can use [the Selenium Grid](https://selenium.dev/documentation/en/grid/) to scale your testing by distributing tests on several machines with parallel execution. To do this, check out the [SeleniumBase selenium_grid folder](https://github.com/seleniumbase/SeleniumBase/tree/master/seleniumbase/utilities/selenium_grid), which should have everything you need, including the <ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/utilities/selenium_grid/ReadMe.md">Selenium Grid ReadMe</a>, which will help you get started.
* If you're using the <ahref="https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/mysql_installation.md">SeleniumBase MySQL feature</a> to save results from tests running on a server machine, you can install [MySQL Workbench](https://dev.mysql.com/downloads/tools/workbench/) to help you read & write from your DB more easily.
* If you use [Slack](https://slack.com), you can easily have your Jenkins jobs display results there by using the [Jenkins Slack Plugin](https://github.com/jenkinsci/slack-plugin). Another way to send messages from your tests to Slack is by using [Slack's Incoming Webhooks API](https://api.slack.com/incoming-webhooks).
* If you're using AWS, you can setup an [Amazon S3](https://aws.amazon.com/s3/) account for saving log files and screenshots from your tests. To activate this feature, modify [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py) with connection details in the S3 section, and add "``--with-s3-logging``" on the command-line when running your tests.
<b>ProTip™:</b> You may need to use the get_page_source() method along with Python's find() command to parse through the source to find something that Selenium wouldn't be able to. (You may want to brush up on your Python programming skills for that.)
**ProTip™:** In most web browsers, you can right-click on a page and select ``Inspect Element`` to see the CSS selector details that you'll need to create your own scripts.
self.type(selector, text) # updates the text from the specified element with the specified value. An exception is raised if the element is missing or if the text field is not editable. Example:
(NOTE: The short versions of this are ``self.find_element(ELEMENT)`` and ``self.assert_element(ELEMENT)``. The find_element() version returns the element)
**ProTip™:** You can use dots to signify class names (Ex: ``div.class_name``) as a simplified version of ``div[class="class_name"]`` within a CSS selector.
You can also use ``*=`` to search for any partial value in a CSS selector as shown below:
(NOTE: ``self.find_text(TEXT, ELEMENT)`` and ``self.wait_for_text(TEXT, ELEMENT)`` also do this. For backwords compatibility, older method names were kept, but the default timeout may be different.)
What if your test opens up a new tab/window and now you have more than one page? No problem. You need to specify which one you currently want Selenium to use. Switching between tabs/windows is easy:
If you're not sure whether there's an alert before trying to accept or dismiss it, one way to handle that is to wrap your alert-handling code in a try/except block. Other methods such as .text and .send_keys() will also work with alerts.
Some websites have a restrictive [Content Security Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP) to prevent users from loading jQuery and other external libraries onto their websites. If you need to use jQuery or another JS library on such a website, add ``--disable_csp`` on the command-line.
(Due to popular demand, this traffic generation example has been baked into SeleniumBase with the ``self.generate_referral(start_page, end_page)`` and the ``self.generate_traffic(start_page, end_page, loops)`` methods.)
Let's say you want to verify multiple different elements on a web page in a single test, but you don't want the test to fail until you verified several elements at once so that you don't have to rerun the test to find more missing elements on the same page. That's where deferred asserts come in. Here's the example:
``deferred_assert_element()`` and ``deferred_assert_text()`` will save any exceptions that would be raised.
To flush out all the failed deferred asserts into a single exception, make sure to call ``self.process_deferred_asserts()`` at the end of your test method. If your test hits multiple pages, you can call ``self.process_deferred_asserts()`` before navigating to a new page so that the screenshot from your log files matches the URL where the deferred asserts were made.
You can use ``--reruns NUM`` to retry failing tests that many times. Use ``--reruns-delay SECONDS`` to wait that many seconds between retries. Example:
Additionally, you can use the ``@retry_on_exception()`` decorator to specifically retry failing methods. (First import: ``from seleniumbase import decorators``) To learn more about SeleniumBase decorators, [click here](https://github.com/seleniumbase/SeleniumBase/tree/master/seleniumbase/common).
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