[clangd] Move clangd tests to clangd directory. check-clangd is no longer part of check-clang-tools.

Summary:
Motivation:
 - this layout is a pain to work with
 - without a common root, it's painful to express things like "disable clangd" (D61122)
 - CMake/lit configs are a maintenance hazard, and the more the one-off hacks
   for various tools are entangled, the more we see apathy and non-ownership.

This attempts to use the bare-minimum configuration needed (while still
supporting the difficult cases: windows, standalone clang build, dynamic libs).
In particular the lit.cfg.py and lit.site.cfg.py.in are merged into lit.cfg.in.
The logic in these files is now minimal.

(Much of clang-tools-extra's lit configs can probably be cleaned up by reusing
lit.llvm.llvm_config.use_clang(), and every llvm project does its own version of
LDPATH mangling. I haven't attempted to fix any of those).

Docs are still in clang-tools-extra/docs, I don't have any plans to touch those.

Reviewers: gribozavr

Subscribers: mgorny, javed.absar, MaskRay, jkorous, arphaman, kadircet, jfb, cfe-commits, ilya-biryukov, thakis

Tags: #clang

Differential Revision: https://reviews.llvm.org/D61187

llvm-svn: 359424

clang-tools-extra/CMakeLists.txt

@@ -1,15 +1,3 @@
-if (NOT DEFINED CLANGD_BUILD_XPC)
-  if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-    set(CLANGD_BUILD_XPC_DEFAULT ON)
-  else ()
-    set(CLANGD_BUILD_XPC_DEFAULT OFF)
-  endif ()
-
-  set(CLANGD_BUILD_XPC ${CLANGD_BUILD_XPC_DEFAULT} CACHE BOOL "Build XPC Support For Clangd." FORCE)
-
-  unset(CLANGD_BUILD_XPC_DEFAULT)
-endif ()
-
 add_subdirectory(clang-apply-replacements)
 add_subdirectory(clang-reorder-fields)
 add_subdirectory(modularize)

clang-tools-extra/clangd/CMakeLists.txt

@@ -1,6 +1,17 @@
 # Configure the Features.inc file.
-llvm_canonicalize_cmake_booleans(
-  CLANGD_BUILD_XPC)
+if (NOT DEFINED CLANGD_BUILD_XPC)
+  if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+    set(CLANGD_BUILD_XPC_DEFAULT ON)
+  else ()
+    set(CLANGD_BUILD_XPC_DEFAULT OFF)
+  endif ()
+
+  set(CLANGD_BUILD_XPC ${CLANGD_BUILD_XPC_DEFAULT} CACHE BOOL "Build XPC Support For Clangd." FORCE)
+  unset(CLANGD_BUILD_XPC_DEFAULT)
+endif ()
+
+llvm_canonicalize_cmake_booleans(CLANGD_BUILD_XPC)
+
 configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/Features.inc.in
   ${CMAKE_CURRENT_BINARY_DIR}/Features.inc
@@ -130,3 +141,8 @@ endif()
 if ( CLANGD_BUILD_XPC )
   add_subdirectory(xpc)
 endif ()
+
+if(CLANG_INCLUDE_TESTS)
+add_subdirectory(test)
+add_subdirectory(unittests)
+endif()

clang-tools-extra/clangd/test/CMakeLists.txt

@@ -0,0 +1,28 @@
+set(CLANGD_TEST_DEPS
+  clangd
+  ClangdTests
+  # No tests for these, but we should still make sure they build.
+  clangd-indexer
+  dexp
+  )
+
+if(CLANGD_BUILD_XPC)
+  list(APPEND CLANGD_TEST_DEPS clangd-xpc-test-client)
+endif()
+
+foreach(dep FileCheck count not)
+  if(TARGET ${dep})
+    list(APPEND CLANGD_TEST_DEPS ${dep})
+  endif()
+endforeach()
+
+configure_lit_site_cfg(
+  ${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.in
+  ${CMAKE_CURRENT_BINARY_DIR}/lit.cfg)
+configure_lit_site_cfg(
+  ${CMAKE_CURRENT_SOURCE_DIR}/../unittests/lit.cfg.in
+  ${CMAKE_CURRENT_BINARY_DIR}/../unittests/lit.cfg)
+
+add_lit_testsuite(check-clangd "Running the Clangd regression tests"
+  ${CMAKE_CURRENT_BINARY_DIR}/Unit;${CMAKE_CURRENT_BINARY_DIR}
+  DEPENDS ${CLANGD_TEST_DEPS})

clang-tools-extra/clangd/test/lit.cfg.in

@@ -0,0 +1,29 @@
+@LIT_SITE_CFG_IN_HEADER@
+
+import lit.llvm
+import lit.formats
+
+# Reuse clang configuration (PATH setup, etc).
+config.clang_tools_dir = "@CLANG_TOOLS_DIR@"
+config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
+config.clang_libs_dir = "@CLANG_LIBS_DIR@"
+config.llvm_libs_dir = "@LLVM_LIBS_DIR@"
+config.target_triple = "@TARGET_TRIPLE@"
+config.host_triple = "@LLVM_HOST_TRIPLE@"
+lit.llvm.initialize(lit_config, config)
+lit.llvm.llvm_config.use_clang()
+
+config.name = 'Clangd'
+config.suffixes = ['.test']
+config.excludes = ['Inputs']
+config.test_format = lit.formats.ShTest(not lit.llvm.llvm_config.use_lit_shell)
+config.test_source_root = "@CMAKE_CURRENT_SOURCE_DIR@"
+config.test_exec_root = "@CMAKE_CURRENT_BINARY_DIR@"
+
+# Clangd-specific lit environment.
+config.substitutions.append(('%clangd-benchmark-dir',
+                             "@CMAKE_CURRENT_BINARY_DIR@/../benchmarks"))
+
+if @CLANGD_BUILD_XPC@:
+  config.available_features.add('clangd-xpc-support')
+

clang-tools-extra/clangd/unittests/CMakeLists.txt

@@ -11,7 +11,17 @@ include_directories(
   ${CLANGD_BINARY_DIR}
   )
 
-add_extra_unittest(ClangdTests
+if(CLANG_BUILT_STANDALONE)
+  # LLVMTestingSupport library is needed for clangd tests.
+  if (EXISTS ${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
+      AND NOT TARGET LLVMTestingSupport)
+    add_subdirectory(${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
+      lib/Testing/Support)
+  endif()
+endif()
+
+add_custom_target(ClangdUnitTests)
+add_unittest(ClangdUnitTests ClangdTests
   Annotations.cpp
   BackgroundIndexTests.cpp
   CancellationTests.cpp