Commits
Korn, Uwe authored and Wes McKinney committed 7f13b70c22c
ARROW-4355: [C++] Reorder testing code into src/arrow/testing Prefixed files that depend on gtest with `gtest_` to make it visible to the user that they are not part of Arrow C++ core. Author: Korn, Uwe <Uwe.Korn@blue-yonder.com> Author: Wes McKinney <wesm+git@apache.org> Closes #3591 from xhochy/ARROW-4355 and squashes the following commits: e71f2048 <Wes McKinney> Fix things up after rebase dbb6c2b2 <Korn, Uwe> clang-format ac5be8e4 <Korn, Uwe> ARROW-4355: Reorder testing code into src/arrow/testing