added tests

5 jobs for master in 3 minutes and 11 seconds
Status Job ID Name Coverage
  Build
passed #72519
VS2017
VS2017-x64

00:00:30

passed #72521
buster Linux
clang-buster

00:01:04

passed #72523
stretch Linux
clang-stretch

00:00:48

passed #72520
buster Linux
gcc-buster

00:01:18

passed #72522
stretch Linux
gcc-stretch

00:00:22