| COST |
| ---- |
| |
| This property describes the cost of a test. When parallel testing is |
| enabled, tests in the test set will be run in descending order of cost. |
| Projects can explicitly define the cost of a test by setting this property |
| to a floating point value. |
| |
| When the cost of a test is not defined by the project, |
| :manual:`ctest <ctest(1)>` will initially use a default cost of ``0``. |
| It computes a weighted average of the cost each time a test is run and |
| uses that as an improved estimate of the cost for the next run. The more |
| a test is re-run in the same build directory, the more representative the |
| cost should become. |
