Assertion Blocks

Assertions help you double-check that your API is behaving itself. Think of them as little guards that say, “Hey response… are you sure you’re correct?”
Voiden proudly supports Assertions as a reusable block, because why should only your code get superpowers?

Note: Make sure the Assertion Plugin is enabled — without it, your assertions are basically on vacation.

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How to Use the Assertion Block

1. Add the Block
   Type /assertion-block and—poof!—your assertion template appears like a magician’s trick (minus the smoke).

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2. Run It
   Give your request a gentle nudge by either:
   • Pressing Cmd + Enter (on macOS) or Ctrl + Enter (on Windows/Linux), or
   • Clicking the big, bright green Play button—the one that screams “press me!”

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3. Check the Results
   Slide over to the Response Panel — you’ll spot your shiny new Assertion Check waiting to tell you if things went perfectly… or hilariously wrong.

Available Operators

Operator	Aliases	Description
equals	eq, ==, ===	Exact equality
not-equals	ne, !=, !==	Not equal
contains	includes	String contains
not-contains	not-includes	String does not contain
starts-with	startswith	String starts with
ends-with	endswith	String ends with
matches	regex	Regex pattern match
exists	is-defined	Value exists
not-exists	is-null, is-undefined	Value does not exist
greater-than	gt, >	Greater than (numeric)
less-than	lt, <	Less than (numeric)
greater-equal	gte, >=	Greater or equal (numeric)
less-equal	lte, <=	Less or equal (numeric)
is-empty	empty	Empty array/string/object
not-empty	None	Not empty
is-truthy	truthy	Truthy value
is-falsy	falsy	Falsy value
type-is	typeof	Type check

Available fields

Field	Example
status	200
statusText	OK
responseTime	500
duration	1000
header	header.Content-Type might have applcation/json
body	body.data[0].id would read the id from { "data": [ { "id": 0} ] }