# feature request: assert

**URL:** https://discourse.cmake.org/t/feature-request-assert/13847
**Category:** Development
**Created:** [March 28, 2025, 4:43pm UTC](https://discourse.cmake.org/t/feature-request-assert/13847 "2025-03-28T16:43:41Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![KSergeyP](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/k/8baadc/32.png) [@KSergeyP](https://discourse.cmake.org/u/KSergeyP)
#### Post date: [March 28, 2025, 4:43pm UTC](https://discourse.cmake.org/t/feature-request-assert/13847/1 "2025-03-28T16:43:41Z")

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you could add: include(assert)

assert\_var(message\_type message var) - is var defined?  
assert\_ndef(message\_type message var) - is not var defined?  
assert\_empty(message\_type message var) - is var empty?  
assert\_empty(message\_type message var) - is not var not empty?  
assert\_eq(message\_type message var1 var2)  
assert\_neq(message\_type message var1 var2)  
…  
Something else

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### Author: ![ben.boeckel](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.cmake.org/u/ben.boeckel)
#### Post date: [July 20, 2025, 2:36am UTC](https://discourse.cmake.org/t/feature-request-assert/13847/2 "2025-07-20T02:36:24Z")

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Writing up a module and demonstrating interest would be a good way to show that it is worth upstreaming at all (no guarantees).