Generating dynamic data in Postman - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to generate a random integer between 1 and 100 in Postman.

Postman

var randomNumber = [1];

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AMath.random()

Bpm.variables.set('randomNumber')

Cpm.environment.get('random')

DMath.floor(Math.random() * 100) + 1

Attempts:

3 left

💡 Hint

Common Mistakes

Using Math.random() alone returns a decimal between 0 and 1, not an integer.

Forgetting to add 1 shifts the range to 0-99 instead of 1-100.

The correct way to generate a random integer between 1 and 100 in Postman script is using Math.floor(Math.random() * 100) + 1. This expression creates a random number from 0 to less than 1, multiplies it by 100, floors it to an integer, then adds 1 to shift the range to 1-100.

2fill in blank

medium

Complete the code to set a dynamic timestamp variable in Postman.

Postman

pm.environment.set('timestamp', [1]);

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ADate.now()

Bnew Date()

Cpm.variables.get('time')

Dmoment()

Attempts:

3 left

💡 Hint

Common Mistakes

Using new Date() directly stores a Date object, not a timestamp number.

Trying to get a variable that does not exist like 'time'.

Date.now() returns the current timestamp in milliseconds since January 1, 1970. This is the preferred way to get a numeric timestamp in Postman scripts.

3fill in blank

hard

Fix the error in the code to generate a random email address with a dynamic number in Postman.

Postman

var email = `user[1]@example.com`;

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AMath.random()

BMath.floor(Math.random() * 1000)

Cpm.variables.get('random')

DDate.now()

Attempts:

3 left

💡 Hint

Common Mistakes

Using Math.random() directly inserts a decimal number.

Using variables that are not defined in the script.

Using Math.floor(Math.random() * 1000) generates a random integer between 0 and 999, which can be used to create a unique email address. Using Math.random() alone would insert a decimal number, which is less readable.

4fill in blank

hard

Fill both blanks to create a dynamic JSON body with a random user ID and current timestamp in Postman.

Postman

{
  "userId": [1],
  "createdAt": [2]
}

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AMath.floor(Math.random() * 10000)

Bnew Date()

CDate.now()

Dpm.variables.get('userId')

Attempts:

3 left

💡 Hint

Common Mistakes

Using new Date() for timestamp inserts a Date object, not a number.

Using undefined variables for userId.

The userId should be a random integer, so Math.floor(Math.random() * 10000) works well. The createdAt timestamp should be a numeric timestamp, so Date.now() is correct.

5fill in blank

hard

Fill all three blanks to generate a dynamic Postman test that checks if the response time is less than 500ms and sets a variable with the current date string.

Postman

pm.test('Response time is fast', function () {
  pm.expect(pm.response.responseTime).to.be.[1](500);
});
pm.environment.set('currentDate', [2]);

var dateString = [3].toISOString();

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Abelow

Bnew Date()

Dabove

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'above' instead of 'below' for the assertion.

Not creating a new Date object before calling toISOString.

The assertion uses below to check if response time is less than 500ms. The current date is set using new Date(). The toISOString() method is called on the same new Date() object to get the date string.