[clangd] Support clang-tidy configuration in clangd.

Summary:
This patch adds some basic supports for clang-tidy configurations in clangd:
      - clangd will respect .clang-tidy configurations for each file
      - we don't aim to support all clang-tidy options in clangd, only a
        small subset of condfigurations (options related to which checks will be
        enabled) are supported.
      - add a `clang-tidy-checks` CLI option that can override options from
        .clang-tidy file

Reviewers: ilya-biryukov, sammccall

Reviewed By: sammccall

Subscribers: javed.absar, ioeric, MaskRay, jkorous, arphaman, kadircet, cfe-commits

Differential Revision: https://reviews.llvm.org/D55256

llvm-svn: 351792

1 files changed, 2 insertions, 1 deletions

diff --git a/clang-tools-extra/unittests/clangd/TUSchedulerTests.cpp b/clang-tools-extra/unittests/clangd/TUSchedulerTests.cpp
index 261c9b549b9..79ee779da62 100644
--- a/clang-tools-extra/unittests/clangd/TUSchedulerTests.cpp
+++ b/clang-tools-extra/unittests/clangd/TUSchedulerTests.cpp
@@ -38,7 +38,8 @@ class TUSchedulerTests : public ::testing::Test {
 protected:
   ParseInputs getInputs(PathRef File, std::string Contents) {
     return ParseInputs{*CDB.getCompileCommand(File),
-                       buildTestFS(Files, Timestamps), std::move(Contents)};
+                       buildTestFS(Files, Timestamps), std::move(Contents),
+                       tidy::ClangTidyOptions::getDefaults()};
   }
 
   void updateWithCallback(TUScheduler &S, PathRef File,