[compiler-rt] Activate interception unittests

[etienneb]

Summary

The unittests recently added were not running when executing 'check-all'.
Tests are stable on every archictetures and we can now turn them on.

[rnk]

lgtm

test/CMakeLists.txt

 # working binaries.
 if(COMPILER_RT_CAN_EXECUTE_TESTS)
   if(COMPILER_RT_HAS_ASAN)
     add_subdirectory(asan)
   endif()
   if(COMPILER_RT_HAS_DFSAN)
     add_subdirectory(dfsan)
   endif()
+  if (COMPILER_RT_HAS_INTERCEPTION)
+    add_subdirectory(interception)
+  endif()
   if(COMPILER_RT_HAS_LSAN)
     add_subdirectory(lsan)
   endif()
   if(COMPILER_RT_HAS_MSAN)
     add_subdirectory(msan)
   endif()
   if(COMPILER_RT_HAS_PROFILE)
     add_subdirectory(profile)

test/interception/CMakeLists.txt

+set(INTERCEPTION_TEST_DEPS ${SANITIZER_COMMON_LIT_TEST_DEPS})
+set(INTERCEPTION_TESTSUITES)
+
+# Unit tests.
+if(COMPILER_RT_INCLUDE_TESTS)
+  configure_lit_site_cfg(
+    ${CMAKE_CURRENT_SOURCE_DIR}/Unit/lit.site.cfg.in
+    ${CMAKE_CURRENT_BINARY_DIR}/Unit/lit.site.cfg)
+  list(APPEND INTERCEPTION_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/Unit)
+  list(APPEND INTERCEPTION_TEST_DEPS InterceptionUnitTests)
+endif()
+
+add_lit_testsuite(check-interception "Running the Interception tests"
+  ${INTERCEPTION_TESTSUITES}
+  DEPENDS ${INTERCEPTION_TEST_DEPS})
+set_target_properties(check-interception PROPERTIES FOLDER "Compiler-RT Misc")

test/interception/Unit/lit.site.cfg.in

+@LIT_SITE_CFG_IN_HEADER@
+
+# Load common config for all compiler-rt unit tests.
+lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/unittests/lit.common.unit.configured")
+
+# Setup config name.
+config.name = 'Interception-Unit'
+
+# Setup test source and exec root. For unit tests, we define
+# it as build directory with interception tests.
+# FIXME: De-hardcode this path.
+config.test_exec_root = os.path.join("@COMPILER_RT_BINARY_DIR@", "lib",
+                                     "interception", "tests")
+config.test_source_root = config.test_exec_root