.vtest

.vtest is a format of Source Engine test scripts. It is the same as .cfg.

They can be used to run in-game tests or to automate processes without using .cfg files.

.vtest files must be placed in ModName\testscripts directory and can be runned by launching the engine with -testscript [filename] command line argument (with .vtest extension).

Several working examples of testscripts can be found in the leaked -4 build of Half-Life 2.

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