[all-commits] [llvm/llvm-project] 60cde7: [libc++] Improve tests for iterators.operations

[Louis Dionne via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 60cde7bbb719a0dc110c8390555dbd9c814aabf1
      https://github.com/llvm/llvm-project/commit/60cde7bbb719a0dc110c8390555dbd9c814aabf1
  Author: Louis Dionne <ldionne at apple.com>
  Date:   2020-06-08 (Mon, 08 Jun 2020)

  Changed paths:
    M libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp
    M libcxx/test/std/iterators/iterator.primitives/iterator.operations/distance.pass.cpp
    M libcxx/test/std/iterators/iterator.primitives/iterator.operations/next.pass.cpp
    M libcxx/test/std/iterators/iterator.primitives/iterator.operations/prev.pass.cpp

  Log Message:
  -----------
  [libc++] Improve tests for iterators.operations

Reduce duplication between the constexpr and the non-constexpr test cases,
and add tests for the return type of the various operations.