ParallelizationTrait
A type that defines whether the testing library runs this test serially or in parallel.
Declaration
struct ParallelizationTraitOverview
When you add this trait to a parameterized test function, that test runs its cases serially instead of in parallel. This trait has no effect when you apply it to a non-parameterized test function.
When you add this trait to a test suite, that suite runs its contained test functions (including their cases, when parameterized) and sub-suites serially instead of in parallel. If the sub-suites have children, they also run serially.
This trait does not affect the execution of a test relative to its peers or to unrelated tests. This trait has no effect if you disable test parallelization globally (for example, by passing --no-parallel to the swift test command.)
To add this trait to a test, use serialized.