https://github.com/HerrCai0907 created 
https://github.com/llvm/llvm-project/pull/141410

Under previous test setup, the test result will be influenced by clang-tidy 
file in parent folder (between llvm-projects root and build folder). It is 
inconventient and leads some confusion.
This PR wants to ensure sandbox to avoid outside's clang-tidy influenece test 
result.


>From ac614ac46750b19d2810d838112ba8b01388f577 Mon Sep 17 00:00:00 2001
From: Congcong Cai <congcongcai0...@163.com>
Date: Sun, 25 May 2025 23:30:24 +0800
Subject: [PATCH] [NFC][clangd][test] add clang-tidy config to ensure test
 cases sandbox

Under previous test setup, the test result will be influenced by clang-tidy 
file in parent folder (between llvm-projects root and build folder). It is 
inconventient and leads some confusion.
This PR wants to ensure sandbox to avoid outside's clang-tidy influenece test 
result.
---
 .../clangd/test/Inputs/path-mappings/server/.clang-tidy        | 1 +
 clang-tools-extra/clangd/test/system-include-extractor.test    | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 
clang-tools-extra/clangd/test/Inputs/path-mappings/server/.clang-tidy

diff --git 
a/clang-tools-extra/clangd/test/Inputs/path-mappings/server/.clang-tidy 
b/clang-tools-extra/clangd/test/Inputs/path-mappings/server/.clang-tidy
new file mode 100644
index 0000000000000..1f16f2a33b3ce
--- /dev/null
+++ b/clang-tools-extra/clangd/test/Inputs/path-mappings/server/.clang-tidy
@@ -0,0 +1 @@
+InheritParentConfig: false
\ No newline at end of file
diff --git a/clang-tools-extra/clangd/test/system-include-extractor.test 
b/clang-tools-extra/clangd/test/system-include-extractor.test
index 4ccc093671324..372b4a1a0fef5 100644
--- a/clang-tools-extra/clangd/test/system-include-extractor.test
+++ b/clang-tools-extra/clangd/test/system-include-extractor.test
@@ -32,6 +32,9 @@
 # RUN: echo 'printf "End of search list.\r\n" >&2' >> %t.dir/bin/my_driver.sh
 # RUN: chmod +x %t.dir/bin/my_driver.sh
 
+# Create fake clang-tidy config to ensure sandbox
+# RUN: echo 'InheritParentConfig: false' >> %t.dir/.clang-tidy
+
 # Create header files my/dir/a.h and my/dir2/b.h
 # RUN: mkdir -p %t.dir/my/dir
 # RUN: touch %t.dir/my/dir/a.h

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