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**Advanced Web Automation & Test Framework**
(Demo of [my_first_test.py](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/my_first_test.py) testing [xkcd.com](http://xkcd.com/353/))
###  **Features**:
* [Python libraries](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/fixtures) for building clean, reliable [WebDriver scripts](https://github.com/seleniumbase/SeleniumBase/blob/master/examples/my_first_test.py). (Python 2.7 or 3.4+)
* [CMD options](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/command_line.md) and a master [config file](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py) to customize test behavior.
* [Plugins](https://github.com/seleniumbase/SeleniumBase/tree/master/seleniumbase/plugins) for logging [data & screenshots](https://github.com/seleniumbase/SeleniumBase/tree/master/examples/example_logs) automatically.
* Backwards-compatible with WebDriver. (Use ``self.driver`` anywhere.)
* Simple syntax makes it easy to get started quickly and be more productive.
* Works with [Selenium Grid](https://github.com/seleniumbase/SeleniumBase/tree/master/integrations/selenium_grid), [MySQL](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/core/testcase_manager.py), [Docker](https://github.com/seleniumbase/SeleniumBase/blob/master/integrations/docker/ReadMe.md), [NodeJS](https://github.com/seleniumbase/SeleniumBase/tree/master/integrations/node_js), [Google Cloud](https://github.com/seleniumbase/SeleniumBase/tree/master/integrations/google_cloud/ReadMe.md), and [AWS](#amazon_section).
* (To learn about businesses using SeleniumBase, [Click Here](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/happy_customers.md).)
* ([See more SeleniumBase features](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/features_list.md))
###  **Get Started**:
(*If using Docker, see [the Docker ReadMe](https://github.com/seleniumbase/SeleniumBase/blob/master/integrations/docker/ReadMe.md).*)
### Setup Instructions for Mac, Ubuntu, & Windows:
Before installation, **[make sure Python and web drivers are already installed](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/before_installation.md)**.
### **Step 1:** Clone SeleniumBase
```bash
git clone https://github.com/seleniumbase/SeleniumBase.git
cd SeleniumBase
```
(A [Git](https://git-scm.com/) GUI tool like [SourceTree](http://www.sourcetreeapp.com/) may help.)
### **Step 2:** Create a Virtual Environment
To learn how to create one, [see the ReadMe](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/virtualenv_instructions.md).
[python-guide.org/en/latest/dev/virtualenvs](http://docs.python-guide.org/en/latest/dev/virtualenvs/) has more details.
### **Step 3:** Install SeleniumBase
To install a clone of SeleniumBase, use:
```bash
pip install -r requirements.txt --upgrade
python setup.py develop
```
(If ChromeDriver and/or GeckoDriver aren't installed, use `server_requirements.txt` and `server_setup.py`. SeleniumBase will be limited to Firefox while using the older Selenium v2.)
To install SeleniumBase from the [Python Package Index](https://pypi.python.org/pypi/seleniumbase) use:
```bash
pip install seleniumbase --upgrade
```
(NOTE: If you're using Python 3.x instead of Python 2.7, use ``pip3`` in place of ``pip`` and ``python3`` in place of ``python`` in the above commands.)
###  **Step 4:** Run the Example Script
**Here's what the example script looks like:**
```python
from seleniumbase import BaseCase
class MyTestClass(BaseCase):
def test_basic(self):
self.open('http://xkcd.com/353/')
self.assert_element('img[alt="Python"]')
self.click('a[rel="license"]')
text = self.get_text("div center")
self.assertTrue("reuse any of my drawings" in text)
self.open('http://xkcd.com/1481/')
title = self.get_attribute('#comic img', 'title')
self.assertTrue('connections to the server' in title)
self.click_link_text('Blag')
self.assert_text('The blag of the webcomic', 'h2')
self.update_text('input#s', 'Robots!\n')
self.assert_text('Hooray robots!', '#content')
self.open('http://xkcd.com/1319/')
self.assert_text('Automation', 'div#ctitle')
```
(By default, [CSS Selectors](https://www.w3schools.com/cssref/css_selectors.asp) are used for finding page elements.)
**Here's how to run the example script on various web browsers:**
(NOTE: You can interchange **nosetests** with **pytest** at anytime.)
```bash
cd examples/
pytest my_first_test.py --browser=chrome
nosetests my_first_test.py --browser=firefox
nosetests my_first_test.py --browser=phantomjs
```
(If no browser is specified, Chrome is used by default.)
If the example test is moving too fast for your eyes to see what's going on, you can run it in **Demo Mode** by adding ``--demo_mode`` on the command line, which pauses the browser briefly between actions, and highlights page elements being acted on:
```bash
pytest my_first_test.py --browser=chrome --demo_mode
```
You can override the default wait time by either updating [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py) or by using ``--demo_sleep={NUM}`` when using Demo Mode. (NOTE: If you use ``--demo_sleep={NUM}`` without using ``--demo_mode``, nothing will happen.)
```bash
nosetests my_first_test.py --browser=chrome --demo_mode --demo_sleep=1.2
```
You can also use the following in your scripts to slow down the tests:
```python
import time; time.sleep(5) # sleep for 5 seconds (add this after the line you want to pause on)
import ipdb; ipdb.set_trace() # waits for your command. n = next line of current method, c = continue, s = step / next executed line (will jump)
```
(NOTE: If you're using pytest instead of nosetests and you want to use ipdb in your script for debugging purposes, you'll either need to add ``--capture=no`` on the command line, or use ``import pytest; pytest.set_trace()`` instead of using ipdb. More info on that [here](http://stackoverflow.com/questions/2678792/can-i-debug-with-python-debugger-when-using-py-test-somehow).)
You may also want to have your test sleep in other situations where you need to have your test wait for something. If you know what you're waiting for, you should be specific by using a command that waits for something specific to happen.
If you need to debug things on the fly (in case of errors), use this:
```bash
nosetests my_first_test.py --browser=chrome --pdb --pdb-failures -s
```
The above code (with --pdb) will leave your browser window open in case there's a failure, which is possible if the web pages from the example change the data that's displayed on the page. (ipdb commands: 'c', 's', 'n' => continue, step, next). You may need the ``-s`` in order to see all console output.
Here are some other useful nosetest arguments for appending to your run commands:
```bash
--logging-level=INFO # Hide DEBUG messages, which can be overwhelming.
-x # Stop running the tests after the first failure is reached.
-v # Prints the full test name rather than a dot for each test.
--with-id # If -v is also used, will number the tests for easy counting.
```
The ``--with-testing_base`` plugin gives you full logging on test failures, which saves screenshots, page source, and basic test info into the logs folder:
```bash
cd examples/
pytest my_first_test.py --with-testing_base --browser=chrome
pytest my_first_test.py --with-testing_base --browser=firefox
```
If you want to run tests headlessly, use ``--headless``, which you'll need to do if your system lacks a GUI interface. Even if your system does have a GUI interface, it may still support headless browser automation.
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. (Subfolders should include a blank ``__init__.py`` file.)
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.)
If you want to pass additional data from the command line to your tests, you can use ``--data=STRING``. Now inside your tests, you can use ``self.data`` to access that.
###  **Creating Visual Test Suite Reports:**
(NOTE: The command line args are different for Pytest vs Nosetests)
#### **Pytest Reports:**
Using ``--html=report.html`` gives you a fancy report of the name specified after your test suite completes.
```bash
pytest my_test_suite.py --html=report.html
```
#### **Nosetest Reports:**
The ``--report`` option gives you a fancy report after your test suite completes. (Requires ``--with-testing_base`` to also be set when ``--report`` is used because it's part of that plugin.)
```bash
nosetests my_test_suite.py --with-testing_base --report
```
(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.)
###  **Using Production Environments & Integrations:**
Here are some things you can do to setup a production environment for your testing:
* You can setup a [Jenkins](https://jenkins.io/) build server for running tests at regular intervals. Jenkins has many plugins available, such as [the Xvfb headless browser plugin](https://wiki.jenkins-ci.org/display/JENKINS/Xvfb+Plugin) for running tests on a machine with no GUI. If you have Xvfb running in the background, you can add ``--headless`` to your run command in order to utilize it. For more info about the Xvfb plugin, [read this](http://qxf2.com/blog/xvfb-plugin-for-jenkins-selenium/). For a real-world Jenkins example of headless browser automation in action, check out [the SeleniumBase Google Cloud ReadMe](https://github.com/seleniumbase/SeleniumBase/blob/master/integrations/google_cloud/ReadMe.md).
* You can use [the Selenium Grid](https://github.com/SeleniumHQ/selenium/wiki/Grid2) 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/integrations/selenium_grid), which should have everything you need. The [Selenium Grid ReadMe](https://github.com/seleniumbase/SeleniumBase/blob/master/integrations/selenium_grid/ReadMe.md) will help you get started.
* If you're using the [SeleniumBase MySQL feature](https://github.com/seleniumbase/SeleniumBase/blob/master/help_docs/mysql_installation.md) to save results from tests running on a server machine, you can install [MySQL Workbench](http://dev.mysql.com/downloads/tools/workbench/) to help you read & write from your DB more easily. You'll also need to install the MySQL-Python connector. Depending on your system, you may have to install this a bit differently from the command below:
```bash
pip install MySQL-python==1.2.5
```
* 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 use [HipChat](https://www.hipchat.com/), you can easily have your Jenkins jobs display results there by using the [Jenkins HipChat Plugin](https://wiki.jenkins-ci.org/display/JENKINS/HipChat+Plugin). Another way is by using the [hipchat_reporting plugin](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/plugins/hipchat_reporting_plugin.py) (nosetests only).
* If you're using AWS, you can setup an [Amazon S3](http://aws.amazon.com/s3/) account for saving your log files and screenshots for future viewing. SeleniumBase already has [all the code you need to connect to S3](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/plugins/s3_logging_plugin.py). You'll need to modify [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py) with connection details to your instance and the location in S3 where you want log files to be saved. You'll also need to add "``--with-s3_logging``" on the command line when you run your tests.
Here's an example of running tests with additional features enabled:
```bash
nosetests [YOUR_TEST_FILE].py --browser=chrome --with-testing_base --with-db_reporting --with-s3_logging -s
```
(NOTE: If you haven't configured your MySQL or S3 connections in [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py), don't use ``--with-db_reporting`` or ``--with-s3_logging``.)
When the testing_base plugin is used, if there's a test failure, the basic_test_info plugin records test logs, the page_source plugin records the page source of the last web page seen by the test, and the screen_shots plugin records the image of the last page seen by the test where the failure occurred. Make sure you always include testing_base whenever you include a plugin that logs test data. The db_reporting plugin records the status of all tests run into your MySQL DB. The s3_logging plugin uploads basic test info, screenshots, and page source into your S3 storage folder.
To simplify that long run command, you can create a *.cfg file, such as the one provided in the example, and enter your plugins there so that you can run everything by typing:
```bash
nosetests [YOUR_TEST_FILE].py --config=[MY_CONFIG_FILE].cfg
```
You can simplify that even more by using a setup.cfg file, such as the one provided for you in the examples folder. If you kick off a test run from within the folder that setup.cfg is location in, that file will automatically be used as your configuration, meaning that you wouldn't have to type out all the plugins that you want to use (or include a config file) everytime you run tests.
If you tell nosetests to run an entire file, it will run every method in that python file that starts with "test". You can be more specific on what to run by doing something like:
```bash
nosetests [YOUR_TEST_FILE].py:[SOME_CLASS_NAME].test_[SOME_TEST_NAME] --config=[MY_CONFIG_FILE].cfg
```
Let's try an example of a test that fails. Copy the following into a file called fail_test.py:
```python
""" test_fail.py """
from seleniumbase import BaseCase
class MyTestClass(BaseCase):
def test_find_army_of_robots_on_xkcd_desert_island(self):
self.open("http://xkcd.com/731/")
self.assert_element("div#ARMY_OF_ROBOTS", timeout=3) # This should fail
```
Now run it:
```bash
nosetests test_fail.py --browser=chrome --with-testing_base
```
You'll notice that a logs folder, "latest_logs", was created to hold information about the failing test, and screenshots. Take a look at what you get. Remember, this data can be saved in your MySQL DB and in S3 if you include the necessary plugins in your run command (and if you set up the neccessary connections properly). For future test runs, past test results will get stored in 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).
###  **Detailed Method Specifications and Examples:**
#### Navigating to a web page (and related commands)
```python
self.open("https://xkcd.com/378/") # This method opens the specified page.
self.go_back() # This method navigates the browser to the previous page.
self.go_forward() # This method navigates the browser forward in history.
self.refresh_page() # This method reloads the current page.
self.get_current_url() # This method returns the current page URL.
self.get_page_source() # This method returns the current page source.
```
**ProTip™:** 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.)
Ex:
```python
source = self.get_page_source()
first_image_open_tag = source.find('![]()
')
first_image_close_tag = source.find'', first_image_open_tag)
everything_inside_first_image_tags = source[first_image_open_tag+len('![]()
'):first_image_close_tag]
```
#### Clicking
To click an element on the page:
```python
self.click("div#my_id")
```
**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.
#### Typing Text
self.update_text(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:
```python
self.update_text("input#id_value", "2012")
```
You can also use self.add_text() or the WebDriver .send_keys() command, but those won't clear the text box first if there's already text inside.
If you want to type in special keys, that's easy too. Here's an example:
```python
from selenium.webdriver.common.keys import Keys
self.find_element("textarea").send_keys(Keys.SPACE + Keys.BACK_SPACE + '\n') # the backspace should cancel out the space, leaving you with the newline
```
#### Getting the text from an element on a page
```python
text = self.get_text("header h2")
```
#### Getting the attribute value from an element on a page
```python
attribute = self.get_attribute("#comic img", "title")
```
#### Asserting existance of an element on a page within some number of seconds:
```python
self.wait_for_element_present("div.my_class", timeout=10)
```
(NOTE: You can also use: ``self.assert_element_present(ELEMENT)``)
#### Asserting visibility of an element on a page within some number of seconds:
```python
self.wait_for_element_visible("a.my_class", timeout=5)
```
(NOTE: The short versions of this are ``self.find_element(ELEMENT)`` and ``self.assert_element(ELEMENT)``. The find_element() version returns the element)
Since the line above returns the element, you can combine that with .click() as shown below:
```python
self.find_element("a.my_class", timeout=5).click()
# But you're better off using the following statement, which does the same thing:
self.click("a.my_class") # DO IT THIS WAY!
```
**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:
```python
self.click('a[name*="partial_name"]')
```
#### Asserting visibility of text inside an element on a page within some number of seconds:
```python
self.assert_text("Make it so!", "div#trek div.picard div.quotes")
self.assert_text("Tea. Earl Grey. Hot.", "div#trek div.picard div.quotes", timeout=3)
```
(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.)
#### Asserting Anything
```python
self.assertTrue(myvar1 == something)
self.assertEqual(var1, var2)
```
#### Useful Conditional Statements (with creative examples in action)
is_element_visible(selector) # is an element visible on a page
```python
import logging
if self.is_element_visible('div#warning'):
logging.debug("Red Alert: Something bad might be happening!")
```
is_element_present(selector) # is an element present on a page
```python
if self.is_element_present('div#top_secret img.tracking_cookie'):
self.contact_cookie_monster() # Not a real method unless you define it somewhere
else:
current_url = self.get_current_url()
self.contact_the_nsa(url=current_url, message="Dark Zone Found") # Not a real method unless you define it somewhere
```
Another example:
```python
def is_there_a_cloaked_klingon_ship_on_this_page():
if self.is_element_present("div.ships div.klingon"):
return not self.is_element_visible("div.ships div.klingon")
return False
```
is_text_visible(text, selector) # is text visible on a page
```python
def get_mirror_universe_captain_picard_superbowl_ad(superbowl_year):
selector = "div.superbowl_%s div.commercials div.transcript div.picard" % superbowl_year
if self.is_text_visible("For the Love of Marketing and Earl Grey Tea!", selector):
return "Picard HubSpot Superbowl Ad 2015"
elif self.is_text_visible("Delivery Drones... Engage", selector):
return "Picard Amazon Superbowl Ad 2015"
elif self.is_text_visible("Bing it on Screen!", selector):
return "Picard Microsoft Superbowl Ad 2015"
elif self.is_text_visible("OK Glass, Make it So!", selector):
return "Picard Google Superbowl Ad 2015"
elif self.is_text_visible("Number One, I've Never Seen Anything Like It.", selector):
return "Picard Tesla Superbowl Ad 2015"
elif self.is_text_visible("""With the first link, the chain is forged.
The first speech censored, the first thought forbidden,
the first freedom denied, chains us all irrevocably.""", selector):
return "Picard Wikimedia Superbowl Ad 2015"
elif self.is_text_visible("Let us make sure history never forgets the name ... Facebook", selector):
return "Picard Facebook Superbowl Ad 2015"
else:
raise Exception("Reports of my assimilation are greatly exaggerated.")
```
#### Switching Tabs
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:
Ex:
```python
self.switch_to_window(1) # this switches to the new tab (0 is the first one)
```
**ProTip™:** iFrames follow the same principle as new windows - you need to specify the iFrame if you want to take action on something in there
Ex:
```python
self.switch_to_frame('ContentManagerTextBody_ifr')
# Now you can act inside the iFrame
# .... Do something cool (here)
self.switch_to_default_content() # exit the iFrame when you're done
```
#### Handle Pop-Up Alerts
What if your test makes an alert pop up in your browser? No problem. You need to switch to it and either accept it or dismiss it:
Ex:
```python
self.wait_for_and_accept_alert()
self.wait_for_and_dismiss_alert()
```
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.
#### Executing Custom jQuery Scripts:
jQuery is a powerful JavaScript library that allows you to perform advanced actions in a web browser.
If the web page you're on already has jQuery loaded, you can start executing jQuery scripts immediately.
You'd know this because the web page would contain something like the following in the HTML:
```html
```
It's OK if you want to use jQuery on a page that doesn't have it loaded yet. To do so, run the following command first:
```python
self.activate_jquery()
```
Here are some examples of using jQuery in your scripts:
```python
self.execute_script('jQuery, window.scrollTo(0, 600)') # Scrolling the page
self.execute_script("jQuery('#annoying-widget').hide()") # Hiding elements on a page
self.execute_script("jQuery('#hidden-widget').show(0)") # Showing hidden elements on a page
self.execute_script("jQuery('#annoying-button a').remove()") # Removing elements on a page
self.execute_script("jQuery('%s').mouseover()" % (mouse_over_item)) # Mouse-over elements on a page
self.execute_script("jQuery('input#the_id').val('my_text')") # Fast text input on a page
self.execute_script("jQuery('div#dropdown a.link').click()") # Click elements on a page
self.execute_script("return jQuery('div#amazing')[0].text") # Returns the css "text" of the element given
self.execute_script("return jQuery('textarea')[2].value") # Returns the css "value" of the 3rd textarea element on the page
```
In the following example, JavaScript is used to plant code on a page that Selenium can then touch after that:
```python
start_page = "https://xkcd.com/465/"
destination_page = "https://github.com/seleniumbase/SeleniumBase"
self.open(start_page)
referral_link = '''Free-Referral Button!''' % destination_page
self.execute_script('''document.body.innerHTML = \"%s\"''' % referral_link)
self.click("a.analytics") # Clicks the generated button
```
(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.)
#### Using non-terminating verifications:
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 page checks come in. Here's the example:
```python
from seleniumbase import BaseCase
class MyTestClass(BaseCase):
def test_non_terminating_checks(self):
self.open('http://xkcd.com/993/')
self.wait_for_element('#comic')
self.check_assert_element('img[alt="Brand Identity"]')
self.check_assert_element('img[alt="Rocket Ship"]') # Will Fail
self.check_assert_element('#comicmap')
self.check_assert_text('Fake Item', '#middleContainer') # Will Fail
self.check_assert_text('Random', '#middleContainer')
self.check_assert_element('a[name="Super Fake !!!"]') # Will Fail
self.process_checks()
```
``check_assert_element()`` and ``check_assert_text()`` will save any exceptions that would be raised.
To flush out all the failed checks into a single exception, make sure to call ``self.process_checks()`` at the end of your test method. If your test hits multiple pages, you can call ``self.process_checks()`` at the end of all your checks for a single page. This way, the screenshot from your log file will make the location where the checks were made.
#### Accessing raw WebDriver
If you need access to any commands that come with standard WebDriver, you can call them directly like this:
```python
self.driver.delete_all_cookies()
capabilities = self.driver.capabilities
self.driver.find_elements_by_partial_link_text("GitHub")
```
(In general, you'll want to use the SeleniumBase versions of methods when available.)
#### Checking Email:
Let's say you have a test that sends an email, and now you want to check that the email was received:
```python
from seleniumbase.fixtures.email_manager import EmailManager, EmailException
num_email_results = 0
email_subject = "This is the subject to search for (maybe include a timestamp)"
email_manager = EmailManager("[YOUR SELENIUM GMAIL EMAIL ADDRESS]") # the password for this is elsewhere (in the library) because this is a default email account
try:
html_text = email_manager.search(SUBJECT="%s" % email_subject, timeout=300)
num_email_results = len(html_text)
except EmailException:
num_email_results = 0
self.assertTrue(num_email_results) # true if not zero
```
Now you can parse through the email if you're looking for specific text or want to navigate to a link listed there.
#### Database Powers:
Let's say you have a test that needs to access the database. First make sure you already have a table ready. Then try this example:
```python
from seleniumbase.core.mysql import DatabaseManager
def write_data_to_db(self, theId, theValue, theUrl):
db = DatabaseManager()
query = """INSERT INTO myTable(theId,theValue,theUrl)
VALUES (%(theId)s,%(theValue)s,%(theUrl)s)"""
db.execute_query_and_close(query, {"theId":theId,
"theValue":theValue,
"theUrl":theUrl})
```
Access credentials are stored in [settings.py](https://github.com/seleniumbase/SeleniumBase/blob/master/seleniumbase/config/settings.py) for your convenience (you have to add them first).
The following example below (taken from the Delayed Data Manager) shows how data can be pulled from the database.
```python
import logging
from seleniumbase.core.mysql import DatabaseManager
def get_delayed_test_data(self, testcase_address, done=0):
""" Returns a list of rows """
db = DatabaseManager()
query = """SELECT guid,testcaseAddress,insertedAt,expectedResult,done
FROM delayedTestData
WHERE testcaseAddress=%(testcase_address)s
AND done=%(done)s"""
data = db.fetchall_query_and_close(query, {"testcase_address":testcase_address, "done":done})
if data:
return data
else:
logging.debug("Could not find any rows in delayedTestData.")
logging.debug("DB Query = " + query % {"testcase_address":testcase_address, "done":done})
return []
```
Now you know how to pull data from your MySQL DB.
Delayed Data Manager usage example: If you scheduled an email to go out 12 hours from now and you wanted to check that the email gets received (but you don't want your test sitting idle for 12 hours) you can store the email credentials as a unique time-stamp for the email subject in the DB (along with a time for when it's safe for the email to be searched for) and then a later-running test can do the checking after the right amount of time has passed.
###  Wrap-Up
Congratulations on making it through this ReadMe tutorial!
Questions or Comments? [](https://gitter.im/seleniumbase/SeleniumBase?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
Here are some other exciting open source projects on GitHub by smart people I've worked with:
[https://github.com/hubspot](https://github.com/hubspot)
~ Michael Mintz
[https://github.com/mdmintz](https://github.com/mdmintz)
[https://www.linkedin.com/in/mdmintz](https://www.linkedin.com/in/mdmintz)
