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Table of contents
1.
✨Introduction
2.
✨ Managing and Sharing of API in Postman
2.1.
⏳Sharing APIs
2.2.
⏳Collaborating on APIs
2.3.
⏳Watching APIs
2.4.
⏳Commenting on APIs
2.5.
⏳Formatting comments
2.6.
⏳Editing, Deleting, or Linking to a Comment
3.
✨ Setting up Mock Servers
3.1.
⏳Creating a mock from scratch
3.2.
⏳Creating a Mock from an API
4.
✨ Mocking with examples
4.1.
Step 1: Sending a request
4.2.
Step 2: Save the request to a collection
4.3.
Step 3: Save a response as an example
4.4.
Step 4: Create a mock server for the collection
4.5.
Step 5: Send a request to the mock server
5.
✨ Mocking with the Postman API
5.1.
Step 1: Create a mocking collection
5.2.
Step 2: Find the collection ID.
5.2.1.
Discover the collection ID
5.2.2.
Acquire the environment ID
5.3.
Step 3: Using the Postman API, construct a mock server
5.4.
Step 4: The URL for the mock server
5.5.
Step 5: Request something from the mock server
6.
Frequently Asked Questions
6.1.
Can Postman be employed to simulate an API?
6.2.
Why are dummy servers helpful when testing APIs?
6.3.
What does Postman's fake server function do?
6.4.
What is a mocking service all about?
7.
Conclusion
Last Updated: Mar 27, 2024
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Mocking with the Postman API and example Matching

Author Kumar Saurav
0 upvote
Master Python: Predicting weather forecasts
Speaker
Ashwin Goyal
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✨Introduction

The Postman testing tool offers a comprehensive API development platform with various built-in tools that support every phase of the API lifecycle. One can design, mock, debug, execute automated tests, document, monitor, and publish APIs all in one place using the Postman tool.

Introduction

✨ Managing and Sharing of API in Postman

Each API is connected to a workspace when it is defined in Postman using the API Builder. You may watch schema activity, distribute access to your APIs, and comment on them.

⏳Sharing APIs

Selecting the API, you wish to share on the sidebar may make your APIs available to colleagues. After selecting it, choose More Actions > Share from the menu.

Sharing

⏳Collaborating on APIs

  • To work with your team, you can transfer APIs to collaborative workspaces. Choose the API you wish to share from the sidebar, then click the More Actions icon > Move.
     
  • Use the search box to discover the workspace where you want to move the API. You can also filter by workspace visibility by using the filter icon.
     
  • To workspaces that you have access to, including personal, private, team, and public workspaces, you can share APIs. You may collaborate with others via shared remote, team, and public workspaces.

⏳Watching APIs

When a team member from the same workspace alters the API—for example, by modifying the schema, attaching an element to the API, adding a remark to the API, and so on—you may use the watch option to be notified through email or in-app notification.
 

To begin watching the API, select Watch.

Watch

⏳Commenting on APIs

  • With Postman, you can collaborate with others while chatting about your APIs while keeping the conversation open to all stakeholders. Commenting is open to anyone with API access.
     
  • To comment on an API, choose APIs from the sidebar, then the API version you want to remark on. Enter your comment in the comment mode, then click Add comment to publish it.

⏳Formatting comments

You can tag a coworker to get their attention in a comment by typing @ and then their name; make your selection from the auto-suggested list. Postman will notify the member you tagged when you mention them in your comment.

⏳Editing, Deleting, or Linking to a Comment

Go to the comment section and hover over the comment you want to control to edit, remove, or link to it. To edit, delete, or gain a direct link to the remark, select the edit icon, delete icon, or anchor icon.

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✨ Setting up Mock Servers

Mock servers can be made from an existing collection, or Postman can create a new collection just for your mock server. You can build a new mock from a group, the sidebar, an API, your history, or a blank canvas.

⏳Creating a mock from scratch

Select + in the sidebar's Mock Servers section.

Creating mock server

Choose a preexisting collection or create a new one.

choosing from preexisting collection

⏳Creating a Mock from an API

Creating a mock

✨ Mocking with examples

Mock servers replicate an API by returning predetermined data, allowing you to create or test an API before it is suitable for production (or without using production data). Mock servers in Postman use samples kept in a collection to return mock data. The procedures listed below will give you a practical illustration of how mock servers and examples function together and teach you how to include them in your API process.

Step 1: Sending a request

  • By selecting New > HTTP Request from the menu or by clicking +, start a new request in Postman. Leave GET as the method, and for the request URL, type https://postman-echo.com/get?test=123. Whenever you are ready, select Send.
     
  • By calling the Postman Echo service, you can test REST or SOAP clients and practice API calls with the aid of this request. The result is shown in the response window.
Sending a request

Step 2: Save the request to a collection

  • Select Save to save the request to a collection. You can use group collections of suggestions to arrange your work and create API processes.
     
  • Give a name to your request. Instead of selecting an existing collection from the Save menu, select New Collection. After selecting C1 as the collection name, click Create. Select Save next to save the request to the new collection.
Saving the request

Step 3: Save a response as an example

  • To store your response from the Postman Echo service, choose to Save Response > Save as an example. The sample is kept in the request's lower C1 collection.
     
  • After selecting Collections, expand the C1 collection and the request in the sidebar, and then choose the example to open it.
     
  • To change the example's name, click the edit icon next to its name. Give the image the new name E1. Remember that the sample contains the URL, status code, and request method. Postman uses these components to recognize a mock server's replies.

Step 4: Create a mock server for the collection

  • Now that you've added an example to your collection, you're ready to set up a mock server—select Collections on the sidebar. Choose the Mock pack by selecting the More Actions icon next to the C1 group.
     
  • For the mock server name, type M1. You can add more information to your mock server as necessary. When you have completed configuring the mock server, click Create Mock Server. You can access the mock server anytime by selecting Mock Servers from the sidebar.
Creating mock

Step 5: Send a request to the mock server

  • After making the fictitious server M1, you can request the mock endpoint. First, copy the URL for the mock server. After choosing Mock Servers in the sidebar, M1 mock server, and Mock Servers, select Mock Copy URL.
     
  • You can create a new request by choosing + or New > HTTP Request. Click Send after entering the mock URL into the new request.

✨ Mocking with the Postman API

You can set up a mock server to imitate an API's functionality for testing or development reasons. You may mock a collection by including examples and creating a mock server in Postman. Using the Postman API, you can also automate the creation of a mock server. Follow the instructions below to learn how to simulate a collection using the Postman API. 

You can set up a mock server to imitate an API's functionality for testing or development reasons. You may mock a group by including examples and setting up a mock server in Postman. Using the Postman API, you can also automate the creation of a mock server. Follow the instructions below to learn how to simulate a collection using the Postman API.

Step 1: Create a mocking collection

  • Make a new collection in Postman called test API. You can alternatively establish a brand-new environment called testAPIEnv as an alternative. You will create a mock server for this demonstration to mimic each endpoint in the test API collection and see the answers.
     
  • Update the test API collection with a new request. The collection in the example below has one Request 1 that makes a GET request to https://postman-echo.com/get?test=123. If you'd like, feel free to add more requests.
     
  • To send the first request in the collection, open it and choose Send. Select Save Response > Save as an example in the response pane. For each request in the group, repeat this procedure. Your mock server will use these examples to deliver mock data.

Step 2: Find the collection ID.

You must first know the collection ID to simulate a collection using the Postman API. Using the Postman API's GET All Collections endpoint, you may get the ID of the test API collection. If you created an environment, you must also use the GET All Environments endpoint to get its ID.

Discover the collection ID

  • Enter the following URL into Postman to create a new request: https://api.getpostman.com/collections. Leave GET as the method selection.
     
  • An authentication error will be returned if you send the request. Add the x-API-key header to your request and set the value to your Postman API key to authenticate with the Postman API. If you don't already have one, you can create a new Postman API key.
     
  • To send the GET All Collections request, choose to Send. All of your collections are listed in the answering pane. Discover the UID value by looking for the test API collection. In the following step, you will use this collection ID.

Acquire the environment ID

  • Create a new request in Postman, choose to GET as the method, and type https://api.getpostman.com/environments as the URL.
     
  • Select Send after including an x-API-key header with your Postman API Key. All of your environments are listed in the response pane. Locate the UID value in the testAPIenv environment.

Step 3: Using the Postman API, construct a mock server

  • You can use the POST Create Mock endpoint to create a mock server once you know the collection ID (and, optionally, the environment ID).
     
  • Create a new request in Postman first, choose POST as the method, and type https://api.getpostman.com/mocks into the address bar.
     
  • Next, add the following raw JSON code to the request's Body tab, replacing your collection ID and environment ID with the appropriate values:
     
{
  "mock": {
    "name": "testAPImock",
    "collection": "<your-collection-id>",
    "environment": "<your-environment-id>"
  }
}

 

Remember to include your Postman API Key with an x-API-key header. Select Send when you're ready to send the request to the Postman API and launch the mock server.

Step 4: The URL for the mock server

  • You need to be aware of the mock server URL to send a request to your mock server. You may get the mock server's URL using the GET All Mocks endpoint. Create a new proposal in Postman, choose to GET as the method, and type https://api.getpostman.com/mocks as the URL.
     
  • Select Send after adding your Postman API Key to an x-API-key header. All of your mock servers are listed in the response pane. Locate the mockUrl value by searching for the testAPImock mock server. To request the mock server, use this URL.

Step 5: Request something from the mock server

You are now prepared to use your collection to mimic requests. Use the mock server URL and add the path to send a request to the mock server: {{mockURL}}/path.

By mimicking Request 1 in the test API collection, you can test this for yourself. In Postman, create a new request and leave the method field set to GET. Enter your mock server's URL as the request URL and add the path from the bid at the end:

https://<your-mock-server-url>/get?test=123

Since the mock server is public, there is no need to add an x-API-key header. Click Send to send the request instead. The response pane displays the dummy server's answer.

Frequently Asked Questions

Can Postman be employed to simulate an API?

You can set up a fake server to imitate an API's functionality for testing or development reasons. You may mock a collection by including examples and creating a fake server in Postman. Using the Postman API, you can also automate the creation of a mock server.

Why are dummy servers helpful when testing APIs?

Without needing to write any code, mock servers enable the quick construction of API infrastructure. As a result, the feedback loop is shortened, and developers may iterate more quickly.

What does Postman's fake server function do?

You can develop or test against an API before it is ready for production by utilizing mock servers, which simulate an API by returning predetermined data (or without using production data). In Postman, mock servers that return fake data rely on examples saved in a collection.

What is a mocking service all about?

What mocking is. Mocking generally entails building a virtual service that functions identically to genuine service. An actual REST or SOAP API is mimicked by a mock service, which has definitions for the actions that customers can call, takes requests, and returns fictitious responses.

Conclusion

In this article Mocking with the Postman API and example Matching, we have discussed Managing and Sharing API in Postman. We also learned about Setting and Mocking with the Postman API and example Matching. Most important are the steps to follow for Mocking with the Postman API and example Matching. Moreover, we have discussed mocking with some examples in Mocking with the Postman API and example Matching.

To learn more about the API, check out our articles on:

  • Web Testing
     
  • API Testing
     
  • API

 

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