doc: Add missing assert() function [skip ci]
@@ -112,6 +112,14 @@ Note that all these options are also available while running the
`meson test` script for running tests instead of `ninja test` or
`msbuild RUN_TESTS.vcxproj`, etc depending on the backend.
+### assert()
+
+``` meson
+ void assert(*condition*, *message*)
+```
+
+Abort with an error message if `condition` evaluates to `false`.
+
### benchmark()
``` meson
