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How to Handle Dropdown in Cypress

By Gurudatt S A, Community Contributor -

Dropdown is an input method largely used when the input has to be one of the values among the given set of values. Usually used in forms, dropdowns are an input UI element that is important for the user experience, hence needs UI Testing

Cypress framework provides an easy and straightforward way of handling Dropdown. Cypress has the chaining command select() using which can easily select the drop-down values. The chaining command select() is used in conjunction with get() and contains() .

What is Cypress Select?

Cypress select() is a command that allows the user to select the dropdown value from the selected HTML DOM element.

Key Features of Cypress select() Command

  1. Ease of Use: Cypress provides simple and intuitive commands to interact with dropdowns. The cy.get() command locates the dropdown element, and the cy.select() command chooses an option based on its value or visible text.
  2. Automatic Waiting: Cypress automatically waits for elements to be available and actions to complete, which means you don’t need to add manual waits or sleep commands. This makes tests more reliable and less prone to timing issues.
  3. Real-time Reloading: When running tests in the Cypress Test Runner, any changes you make to the test code are immediately reflected, allowing for rapid development and debugging of tests.
  4. Built-in Assertions: Cypress comes with built-in assertions to verify that the application is in the expected state after interactions. For example, you can assert that a dropdown has a specific value selected.

Different Ways to Select the Dropdown Option

An option in the select dropdown can be selected using its,

  • Value
  • Text
  • Index

Let us consider BrowserStack’s demo website for referring to the select dropdown

Screenshot 2022 08 09 at 8.42.02 PM

As observed, the Order by select drop-down has three options

  • Select – default value
  • Lowest to highest
  • Highest to lowest

To select the options by index

  • Index 0 – Select
  • Index 1 – Lowest to highest
  • Index 2 – Highest to lowest

To select the options by value

  • value=”lowestprice”
  • value=”highestprice”

To select the options by text

  • Select
  • Lowest to highest
  • Highest to lowest

Writing Cypress Tests to Select Dropdown Options

Let’s see how to write cypress tests for selecting dropdown options with the three ways discussed above.

Cypress test for selecting drop-down option by its index

it.only("Validate the dropdown option selection by it's index", () => {
cy.visit("https://www.bstackdemo.com/")
cy.get("select").select(1).invoke("val").should("eq", "lowestprice")
})

In the above code example, first finding the element using get() and then using chained command select() to pass the index(index starts from 0). In order to ensure that the value selected is proper, you can invoke the element’s value using invoke(“val”) and assert using should()

Cypress test for selecting Drop-Down option by its value

it.only("Validate the dropdown option selection by it's value", () => {
cy.visit("https://www.bstackdemo.com/")
cy.get("select")
  .select("lowestprice")
  .invoke("val")
  .should("eq", "lowestprice")
})

In the above code example, passing the select dropdown option’s value to Cypress’s select() function. Note that the select command accepts index, value, and text.

Cypress test for selecting Dropdown option by its text

Similar to the above example, here passing the select dropdown option’s text to Cypress’s select() function.

it.only("Validate the dropdown option selection by it's text", () => {
cy.visit("https://www.bstackdemo.com/")
cy.get("select")
  .select("Highest to lowest")
  .invoke("val")
  .should("eq", "highestprice")
})

Selection of multiple options in Dropdown by its text

There are dropdowns that support selecting multiple options; in that case, you can pass array to the select() command as seen below

cy.get("select").select(["option 1", "option 2"])

Asserting the selected Dropdown options by text is saved

There are use cases where you would need to validate if the drop down option selected is the right one and the option is retained in the select drop-down once it’s selected.

You can validate this by retrieving the selected value’s text like in the below example

it.only("Validate the dropdown option selection by it's text and assert the selection", () => {
cy.visit("https://www.bstackdemo.com/")
cy.get("select").select("Highest to lowest")
cy.get("select option:selected")
  .invoke("text")
  .should("eq", "Highest to lowest")
})

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How to run Cypress Dropdown Tests on Real Devices using BrowserStack

To run the Cypress test in BrowserStack Cloud, follow the below steps

1. Create a folder in your machine, Example, cypress-dropdown-example

2. Open the terminal and navigate to the newly created folder

3. Execute npm init and complete the installation

4. Install Cypress by executing the below command in the terminal

npm install cypress --save-dev

5. To create a folder structure of cypress, execute the below command in the terminal

npx cypress open

6. Follow the instructions to create examples

7. Inside the Cypress > e2e folder create a new file named cypress-dropdown.cy.js

8. Paste the below test code and save the file.

it("Validate the dropdown option selection by it's value", () => {
 cy.visit("https://www.bstackdemo.com/")
 cy
   .get("select")
   .select("lowestprice")
   .invoke("val")
   .should("eq", "lowestprice")
})

it("Validate the dropdown option selection by it's value", () => {
 cy.visit("https://www.bstackdemo.com/")
 cy
   .get("select")
   .select("lowestprice")
   .invoke("val")
   .should("eq", "lowestprice")
})

it("Validate the dropdown option selection by it's text and assert the selection", () => {
 cy.visit("https://www.bstackdemo.com/")
 cy.get("select").select("Highest to lowest")
 cy
   .get("select option:selected")
   .invoke("text")
   .should("eq", "Highest to lowest")
})

9. Install the BrowserStack Cypress CLI by running the below command in the terminal

npm install -g browserstack-cypress-cli

10. From the root of the repository, execute the below command to create the BrowserStack configuration file

browserstack-cypress init

11. Open the browserstack.json file and update the username and accesskey (This will be available on the BrowserStackAutomate Website for your account)

12. Run the below command in the terminal from the root of your repository to execute the cypress tests in BrowserStack Cloud

browserstack-cypress run --sync

13. We can then check the run in BrowserStack Automate

Handling Dropdown in Cypress using BrowserStack Automate

Talk to an Expert

Why use BrowserStack Automate for Cypress Tests?

Here’s why you should run your Cypress tests on Real Devices & Browsers using BrowserStack Automate:

  • Diverse Environment Testing: It enables the execution of Cypress tests across a broad selection of browsers and operating systems, eliminating the necessity for maintaining local testing infrastructure. This ensures consistent application performance across various platforms.
  • Concurrent Test Execution: By allowing simultaneous execution of multiple Cypress test suites, BrowserStack Automate significantly cuts down on total testing time, facilitating quicker iterative feedback and accelerated deployment cycles.
  • CI/CD Integration: The platform seamlessly integrates with major continuous integration and delivery systems, including Jenkins, Travis CI, CircleCI, and GitHub Actions, automating the testing process within the development pipeline.
  • Diagnostic Tools for Better Debugging: BrowserStack provides comprehensive diagnostic capabilities, including detailed logs, screenshots, and video recordings of test sessions, aiding in the swift identification and resolution of issues.
  • Testing on Real Devices: Beyond simulated environments, BrowserStack also supports testing on real devices and browsers on the cloud, offering more precise and real-world test outcomes.
  • Customizable Test Execution: Users can tailor test executions to meet specific needs through BrowserStack’s user interface or APIs, enabling adaptable and controlled test runs.

Conclusion

This article demonstrates how to select the dropdown options using Cypress. It also covers using the select() command to select the option by its value, index, and text. Additionally, you can also validate if the drop-down has selected the value which was intended by assertion using should().

Cypress is a reliable automation tool, but it is important to test the application on a real device cloud for more accurate test results. By testing under real user conditions you can identify the bottlenecks in the real user experience and rectify them in time before release. Cypress tests can take leverage of BrowserStack’s powerful cloud platform to run tests in a faster and more efficient way.

Run Cypress Tests on Real Devices

Tags
Automated UI Testing Cypress Website Testing

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