C++ test code is missing declaration of string

The description does not specify how the items should be sorted. If it's supposed to be in alphabetical order, including symbols makes no sense. If it's by ascii value, requiring case-insensitivity makes no sense.

I think alphabetical order should be specified in the description and the symbol test case should be removed.

Actual and expected are flipped in PHP

in C++, using namespace std; in the proposed soution is required for the tests to run properly...

BTW a code smell...

Please add tests that check if the returned value only contains unique values.
I managed to solve this kata without checking this case.

Go translation

D translation

Rust translation

Can you, please, explain the rule for discarding the names.

Why <[JAsoN, JaSON, jASon, jasON]> boils down to <[JAsoN, jASon]>
and <[JJ, Jackson, Jason, Johnson]> to <[JJ, Jason]> ?

Ruby 3.0 should be enabled, read this to learn how to do it

Please organize the structure of test fixture as following (although it has been mentioned in the attached link, I'm repeated here again)

describe "<This message should describe the categories of test groups inside this block>" do
  it "<A short message describing this test group>" do
    expect(...).to eq(...) #Assertions
    #Or Test.assert_equals(user_response, reference_response)
  end
end

Rust 2018 is giving some unused variable problems on internal tests.