CMP0064ΒΆ
New 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. CMake version
3.25.2 warns when the policy is not set and uses OLD behavior. Use
the cmake_policy() command to set it to OLD or NEW
explicitly.
Note
The OLD behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.