Split test_executors.cpp even further. (backport #2572)

[mergify]

That's because it is too large for Windows Debug to compile, so split into smaller bits.

Even with this split, the file is too big; that's likely because we are using TYPED_TEST here, which generates multiple symbols per test case. To deal with this, without further breaking up the file, also add in the /bigobj flag when compiling on Windows Debug.

@Crola1702 FYI; this should fix osrf/buildfarm-tools#63 (comment)

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This is an automatic backport of pull request #2572 done by Mergify.

[mergify]

Cherry-pick of c743c17 has failed:

On branch mergify/bp/jazzy/pr-2572
Your branch is up to date with 'origin/jazzy'.

You are currently cherry-picking commit c743c173.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   rclcpp/test/rclcpp/CMakeLists.txt
	new file:   rclcpp/test/rclcpp/executors/test_executors_busy_waiting.cpp
	new file:   rclcpp/test/rclcpp/executors/test_waitable.cpp
	new file:   rclcpp/test/rclcpp/executors/test_waitable.hpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   rclcpp/test/rclcpp/executors/test_executors.cpp

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[clalancette]

Pulls: #2619
Gist: https://gist.githubusercontent.com/clalancette/00dc952ea072e7042c7a24011851fdcb/raw/4ab92a0fdff5d2c6163a6b5a1b246409a65a5557/ros2.repos
BUILD args: --packages-up-to rclcpp
TEST args: --packages-select rclcpp
ROS Distro: jazzy
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/14506

• Linux
• Linux-aarch64
• Linux-rhel
• Windows
• Windows Debug