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Questions and Answers
Which version of Selenium Grid is being deprecated by the Selenium Team?
Which version of Selenium Grid is being deprecated by the Selenium Team?
- Neither Grid 1 nor Grid 2
- Grid 2
- Both Grid 1 and Grid 2
- Grid 1 (correct)
How many nodes can there be in a Selenium Grid?
How many nodes can there be in a Selenium Grid?
- Depends on the number of tests
- Only one
- Two or more (correct)
- Depends on the number of hubs
Where are the tests loaded into in Selenium Grid?
Where are the tests loaded into in Selenium Grid?
- Hub (correct)
- Neither Hub nor Node
- Node
- Both Hub and Node
On which machine is the hub launched in Selenium Grid?
On which machine is the hub launched in Selenium Grid?
Which component of Selenium Grid executes the tests loaded on the hub?
Which component of Selenium Grid executes the tests loaded on the hub?
Do the machines running the nodes need to be the same platform as that of the hub in Selenium Grid?
Do the machines running the nodes need to be the same platform as that of the hub in Selenium Grid?
What is the purpose of Selenium Grid?
What is the purpose of Selenium Grid?
Which package needs to be imported to use the DesiredCapabilities object?
Which package needs to be imported to use the DesiredCapabilities object?
What is the platform in the given example?
What is the platform in the given example?
What is the browserName in the given example?
What is the browserName in the given example?
What is the role of the hub in Selenium Grid?
What is the role of the hub in Selenium Grid?
What is the purpose of the JSON config file in Selenium Grid?
What is the purpose of the JSON config file in Selenium Grid?
What is the command to launch the hub using the JSON config file?
What is the command to launch the hub using the JSON config file?
What is the purpose of the Grid Console in Selenium Grid?
What is the purpose of the Grid Console in Selenium Grid?
Which command should be used to launch the hub on Machine A?
Which command should be used to launch the hub on Machine A?
Which port number is used by Selenium Grid for its web interface on Machine A?
Which port number is used by Selenium Grid for its web interface on Machine A?
What is the purpose of launching a node in Selenium Grid?
What is the purpose of launching a node in Selenium Grid?
What is the difference between Selenium Grid 1 and Selenium Grid 2?
What is the difference between Selenium Grid 1 and Selenium Grid 2?
What is used to set the type of browser and OS that will be automated in Selenium Grid?
What is used to set the type of browser and OS that will be automated in Selenium Grid?
What is used to set which node (or machine) the test will run against in Selenium Grid?
What is used to set which node (or machine) the test will run against in Selenium Grid?
What are the benefits of using Selenium Grid?
What are the benefits of using Selenium Grid?
Which concept does Selenium Grid use to run multiple tests simultaneously on different browsers and platforms?
Which concept does Selenium Grid use to run multiple tests simultaneously on different browsers and platforms?
What is the purpose of the hub in Selenium Grid?
What is the purpose of the hub in Selenium Grid?
How can you verify if the hub is running in Selenium Grid?
How can you verify if the hub is running in Selenium Grid?
What is the purpose of the DesiredCapabilities object in Selenium Grid?
What is the purpose of the DesiredCapabilities object in Selenium Grid?
What is the purpose of the RemoteWebDriver object in Selenium Grid?
What is the purpose of the RemoteWebDriver object in Selenium Grid?
Which component of Selenium Grid is responsible for executing the tests?
Which component of Selenium Grid is responsible for executing the tests?
How can you install Selenium Grid?
How can you install Selenium Grid?
What are the two ways to verify if the hub is running in Selenium Grid?
What are the two ways to verify if the hub is running in Selenium Grid?
What is the purpose of the nodes in Selenium Grid?
What is the purpose of the nodes in Selenium Grid?
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Study Notes
Selenium Grid
- Selenium Grid 1 is being deprecated by the Selenium Team.
Selenium Grid Architecture
- There can be multiple nodes in a Selenium Grid.
- Tests are loaded into the hub in Selenium Grid.
- The hub is launched on a machine, which can be different from the nodes.
Node and Hub
- The node component executes the tests loaded on the hub.
- Machines running the nodes do not need to be the same platform as the hub.
Purpose of Selenium Grid
- The purpose of Selenium Grid is to run tests in parallel on multiple machines, allowing for faster test execution.
DesiredCapabilities
- The
DesiredCapabilities
object is used to set the type of browser and OS that will be automated. - The
DesiredCapabilities
object is imported from theorg.openqa.selenium.remote
package.
JSON Config File
- The JSON config file is used to configure the hub.
- The command to launch the hub using the JSON config file is
java -jar selenium-server-standalone.jar -role hub -hubConfig hub.json
.
Grid Console
- The Grid Console is used to monitor the grid and view the nodes and their status.
Launching Hub and Node
- The command to launch the hub on Machine A is
java -jar selenium-server-standalone.jar -role hub
. - The hub uses port 4444 by default for its web interface.
- The purpose of launching a node is to register it with the hub and make it available for test execution.
Selenium Grid 1 and 2
- Selenium Grid 2 is an improvement over Selenium Grid 1, with a more scalable and flexible architecture.
Benefits of Selenium Grid
- The benefits of using Selenium Grid include faster test execution, parallel testing, and the ability to test on multiple browsers and platforms.
Grid Concepts
- Selenium Grid uses the concept of parallel testing to run multiple tests simultaneously on different browsers and platforms.
Verifying Hub
- The hub can be verified by checking the Grid Console or by using the command
curl <a href="http://localhost:4444/grid/console">http://localhost:4444/grid/console</a>
.
RemoteWebDriver
- The
RemoteWebDriver
object is used to execute tests on a remote node.
Installing Selenium Grid
- Selenium Grid can be installed by downloading the Selenium Server JAR file and running it with the
java
command.
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