[clang-tools-extra] [clang-tidy] Return error code on config parse error (PR #136167)

[Carlos Galvez via cfe-commits]

================
@@ -46,20 +46,65 @@ TEST(ClangTidyOptionsProvider, InMemoryFileSystems) {
 
   FileOptionsProvider FileOpt({}, {}, {}, FileSystem);
 
-  ClangTidyOptions File1Options =
+  llvm::ErrorOr<ClangTidyOptions> File1Options =
       FileOpt.getOptions("ProjectRoot/SubDir1/File.cpp");
-  ClangTidyOptions File2Options =
+  llvm::ErrorOr<ClangTidyOptions> File2Options =
       FileOpt.getOptions("ProjectRoot/SubDir1/SubDir2/File.cpp");
-  ClangTidyOptions File3Options =
+  llvm::ErrorOr<ClangTidyOptions> File3Options =
       FileOpt.getOptions("ProjectRoot/SubDir1/SubDir2/SubDir3/File.cpp");
 
-  ASSERT_TRUE(File1Options.Checks.has_value());
-  EXPECT_EQ(*File1Options.Checks, "-*,clang-diagnostic-*,readability-*");
-  ASSERT_TRUE(File2Options.Checks.has_value());
-  EXPECT_EQ(*File2Options.Checks, "bugprone-*,misc-*,clang-diagnostic-*");
+  ASSERT_TRUE(File1Options->Checks.has_value());
----------------
carlosgalvezp wrote:

Before dereferencing, we should assert that there was no error

https://github.com/llvm/llvm-project/pull/136167
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