# assert/not-nil? Assert a value is not nil. Used inside `deftest` blocks. ## Syntax

[assert/not-nil? $x]

## Parameters - `$x` — the value to check. ## Examples

[assert/not-nil? $user]
[assert/not-nil? [map/get $m :key]]

## Returns `true` on success; raises a runtime error on failure. ## See Also `assert/nil?`, `assert/truthy`, `deftest`