It seems to me that there is some kind of error with the tests, I pass the Sample_tests, but I cannot pass the Basic_tests, although, as I understand it, they contain the same tests as in the Sample_tests. Am I wrong?

IMHO in C++ the right way to do that would not be to templatize the sh.., but much simpler to behave like some STL algorithms and have a "ring class contructor" taking begin() and end() as parms.
I rank it 4 kyu "Advanced design patterns"...

Great problem. It's refressing to see threading instead of the usual iteration or string parsing.

One small issue is that the times in the sample test are incorrect in the C++ translation. The second comment should be 1.999 seconds and the third should be 2.001 seconds.

usleep(1000000); Assert::That(calledBack.load(), Equals(0)); // 1 second passed usleep(999000); Assert::That(calledBack.load(), Equals(0)); // 4.999 seconds usleep(2000); Assert::That(calledBack.load(), Equals(1)); // 5.001 seconds

Python translation:

https://www.codewars.com/kumite/5fb6508618f1e7000a7a82ed?sel=5fb6508618f1e7000a7a82ed

Create a class that has an internal sequence container

From this it seems that the class owns the container, but solutions that use the container by reference also pass. It should be clarified and the tests should match the description.

Duplicate of https://www.codewars.com/kata/558aa460dcfb4a94c40001d7

In the example tests:

BasicTests
Expected: equal to 28.2481
Actual: 28.2481

Aren't they equal? incase if they are not, then the same code passes the full test suite, something needs to be fixed.

main.cpp:14:22: error: use of undeclared identifier 'greet'
        Assert::That(greet(6.5), Equals(43.458605584615));
                     ^
1 error generated.