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[Support] Add a test for recursive response file expansion 

I'm going to be modifying the logic to avoid infinitely recursing on
self-referential response files, so add a unit test to verify the
expected behavior.

Differential Revision: https://reviews.llvm.org/D60630

llvm-svn: 358451
This commit is contained in:
Shoaib Meenai 2019-04-15 21:31:25 +00:00
parent 0495f29e42
commit c8497467ed
1 changed files with 31 additions and 0 deletions
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31
llvm/unittests/Support/CommandLineTest.cpp
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@ -782,6 +782,37 @@ TEST(CommandLineTest, ResponseFiles) {
llvm::sys::fs::remove(TestDir);
}
TEST(CommandLineTest, RecursiveResponseFiles) {
SmallString<128> TestDir;
std::error_code EC = sys::fs::createUniqueDirectory("unittest", TestDir);
EXPECT_TRUE(!EC);
SmallString<128> ResponseFilePath;
sys::path::append(ResponseFilePath, TestDir, "recursive.rsp");
std::string ResponseFileRef = std::string("@") + ResponseFilePath.c_str();
std::ofstream ResponseFile(ResponseFilePath.str());
EXPECT_TRUE(ResponseFile.is_open());
ResponseFile << ResponseFileRef << "\n";
ResponseFile << ResponseFileRef << "\n";
ResponseFile.close();
// Ensure the recursive expansion terminates.
llvm::SmallVector<const char *, 4> Argv = {"test/test",
ResponseFileRef.c_str()};
llvm::BumpPtrAllocator A;
llvm::StringSaver Saver(A);
bool Res = llvm::cl::ExpandResponseFiles(
Saver, llvm::cl::TokenizeGNUCommandLine, Argv, false, false);
EXPECT_FALSE(Res);
// Ensure some expansion took place.
EXPECT_GT(Argv.size(), 2U);
EXPECT_STREQ(Argv[0], "test/test");
for (size_t i = 1; i < Argv.size(); ++i)
EXPECT_STREQ(Argv[i], ResponseFileRef.c_str());
}
TEST(CommandLineTest, SetDefautValue) {
cl::ResetCommandLineParser();