# CMP0064

Warning

The `OLD` behavior of this policy was removed in CMake version 4.0. This policy must be set to `NEW` by a call to `cmake_minimum_required()` or `cmake_policy()`.

Added in version 3.4.

Recognize `TEST` as a operator for the `if()` command.

The `TEST` operator was added to the `if()` command to determine if a given test name was created by the `add_test()` command.

The `OLD` behavior for this policy is to ignore the `TEST` operator. The `NEW` behavior is to interpret the `TEST` operator.

This policy was introduced in CMake version 3.4. Prior to removal in CMake version 4.0, it could be set by `cmake_policy()` or `cmake_minimum_required()`. If it was not set, CMake warned, and used `OLD` behavior.