[foxy backport] Back port various unit tests for coverage part 3-ish#1389

Merged

brawner merged 7 commits intobrawner/rclcpp-backport-tests-part1from

brawner/rclcpp-backport-tests-part3

Oct 7, 2020

Commits on Oct 7, 2020

Fixes for unit tests that fail under cyclonedds (#1270)
brawner
committed
fix topic stats test, wait for more messages, only check the ones with samples (#1274)

dirk-thomas
authored and
brawner
committed
Refactor Subscription Topic Statistics Tests (#1281)

dabonnie
authored and
brawner
committed
Adding tests basic getters (#1291)

Blast545
authored and
brawner
committed
Replace std_msgs with test_msgs in executors test (#1310)

jacobperron
authored and
brawner
committed
Add tests type_support module (#1308)

Blast545
authored and
brawner
committed
Add coverage for wait_set_policies (#1316)
brawner
committed