[libc++] [test] Reformat deduct.pass.cpp for sequence containers
Also add a test for `vector(42, allocator<int>())` since it doesn't
do what you'd naturally think it does.
[libc++] [test] Rename deduct.fail.cpp -> deduct.verify.cpp, and reformat
All tests have been reformatted to 2-space indents and commented
in the modern style. Remove the repetition of Standardese deduction guides,
since the important thing about these verify tests is that they reject
the right things, not that they "exercise" specific signatures (which
by definition they will not, because the point is that no specific signature
matches, hence CTAD fails).
No code coverage was (intentionally) removed, but I tried to simplify the code where possible, and added coverage for vector(42, allocator<int>()) (and ditto for each of the containers) as mentioned above.
[libc++] [test] Reformat deduct.pass.cpp for sequence containers
[libc++] [test] Rename deduct.fail.cpp -> deduct.verify.cpp, and reformat
No code coverage was (intentionally) removed, but I tried to simplify the code where possible, and added coverage for
vector(42, allocator<int>())(and ditto for each of the containers) as mentioned above.