Improve task arena test coverage

[alexey-katranov]

Signed-off-by: Alexei Katranov [email protected]

Description

#566 added two functions into task_arena class that are not covered with tests:

tbb::detail::d1::task_arena::initialize(d1::attach)
tbb::detail::d1::task_arena::task_arena(d1::attach)

Cover these functions with tests.

• - git commit message contains appropriate signed-off-by string (see CONTRIBUTING.md for details)

Type of change

Choose one or multiple, leave empty if none of the other choices apply

Add respective label(s) to PR if you have permissions

• bug fix - change which fixes an issue
• new feature - change which adds functionality
• tests - change in tests
• infrastructure - change in infrastructure and CI
• documentation - documentation update

Tests

• added - required for new features and for some bug fixes
• not needed

Documentation

• updated in # - add PR number
• needs to be updated
• not needed

Breaks backward compatibility

• Yes
• No
• Unknown

Notify the following users

@anton-potapov

Other information

[anton-potapov]

LGTM