Selenium Documentation, Release 1.0
A command is what tells Selenium what to do. Selenium commands come in three “flavors”: Actions,
Accessors and Assertions.
• Actions are commands that generally manipulate the state of the application. They do things like
“click this link” and “select that option”. If an Action fails, or has an error, the execution of the
current test is stopped.
Many Actions can be called with the “AndWait” suffix, e.g. “clickAndWait”. This suffix tells
Selenium that the action will cause the browser to make a call to the server, and that Selenium
should wait for a new page to load.
• Accessors examine the state of the application and store the results in variables, e.g. “storeTitle”.
They are also used to automatically generate Assertions.
• Assertions are like Accessors, but they verify that the state of the application conforms to what
is expected. Examples include “make sure the page title is X” and “verify that this checkbox is
checked”.
All Selenium Assertions can be used in 3 modes: “assert”, “verify”, and ” waitFor”. For example,
you can “assertText”, “verifyText” and “waitForText”. When an “assert” fails, the test is aborted.
When a “verify” fails, the test will continue execution, logging the failure. This allows a single
“assert” to ensure that the application is on the correct page, followed by a bunch of “verify”
assertions to test form field values, labels, etc.
“waitFor” commands wait for some condition to become true (which can be useful for testing
Ajax applications). They will succeed immediately if the condition is already true. However, they
will fail and halt the test if the condition does not become true within the current timeout setting
(see the setTimeout action below).
3.2.2 Script Syntax
Selenium commands are simple, they consist of the command and two parameters. For example:
verifyText //div//a[2] Login
The parameters are not always required; it depends on the command. In some cases both are required,
in others one parameter is required, and in still others the command may take no parameters at all. Here
are a couple more examples:
goBackAndWait
verifyTextPresent Welcome to My Home Page
type id=phone (555) 666-7066
type id=address1 ${myVariableAddress}
The command reference describes the parameter requirements for each command.
Parameters vary, however they are typically
• a locator for identifying a UI element within a page.
• a text pattern for verifying or asserting expected page content
• a text pattern or a selenium variable for entering text in an input field or for selecting an option
from an option list.
Locators, text patterns, selenium variables, and the commands themselves are described in considerable
detail in the section on Selenium Commands.
12 Chapter 3. Selenium Basics
