[llvm] d0ea8a8 - [unittests] Fix a recent test on Windows with LLVM_WINDOWS_PREFER_FORWARD_SLASH (#224963)

[via llvm-commits]

Author: Martin Storsjö
Date: 2026-09-27T23:38:21+03:00
New Revision: d0ea8a8e46091f71684091f48412ce500165d76f

URL: https://github.com/llvm/llvm-project/commit/d0ea8a8e46091f71684091f48412ce500165d76f
DIFF: https://github.com/llvm/llvm-project/commit/d0ea8a8e46091f71684091f48412ce500165d76f.diff

LOG: [unittests] Fix a recent test on Windows with LLVM_WINDOWS_PREFER_FORWARD_SLASH (#224963)

This fixes errors like these:
```
Expected equality of these values:
  Context.Path
    Which is: "D:/a/llvm-mingw/llvm-mingw/llvm-project/build/unittests/Support/LLVMToolSession/./LLVMToolSessionTests.exe"
  ExecutablePath.c_str()
    Which is: "D:\\a\\llvm-mingw\\llvm-mingw\\llvm-project\\build\\unittests\\Support\\LLVMToolSession\\.\\LLVMToolSessionTests.exe"
```

Added: 
    

Modified: 
    llvm/unittests/Support/LLVMToolSession/LLVMToolSessionTest.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/unittests/Support/LLVMToolSession/LLVMToolSessionTest.cpp b/llvm/unittests/Support/LLVMToolSession/LLVMToolSessionTest.cpp
index d1ef91444c2f7..e0252324ed403 100644
--- a/llvm/unittests/Support/LLVMToolSession/LLVMToolSessionTest.cpp
+++ b/llvm/unittests/Support/LLVMToolSession/LLVMToolSessionTest.cpp
@@ -58,7 +58,9 @@ int resetOptionsMain(int, char **, const ToolContext &) {
 int directMain(int Argc, char **Argv, const ToolContext &Context) {
   EXPECT_EQ(Argc, 1);
   EXPECT_STREQ(Argv[0], ExecutablePath.c_str());
-  EXPECT_STREQ(Context.Path, ExecutablePath.c_str());
+  SmallString<32> ExecutablePathBuf(ExecutablePath);
+  sys::path::make_preferred(ExecutablePathBuf);
+  EXPECT_STREQ(Context.Path, ExecutablePathBuf.c_str());
   EXPECT_FALSE(Context.NeedsPrependArg);
   return 0;
 }