From 71c5d42321bea6b31c57def164dace18b71476bc Mon Sep 17 00:00:00 2001
From: Marcus Holland-Moritz <github@mhxnet.de>
Date: Fri, 22 Dec 2023 20:46:57 +0100
Subject: [PATCH] test: add xattr tests

---
 test/dwarfs_tools.cpp | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/test/dwarfs_tools.cpp b/test/dwarfs_tools.cpp
index b5e17966..011c36c5 100644
--- a/test/dwarfs_tools.cpp
+++ b/test/dwarfs_tools.cpp
@@ -62,6 +62,8 @@ namespace {
 namespace bp = boost::process;
 namespace fs = std::filesystem;
 
+using namespace std::literals::string_view_literals;
+
 auto test_dir = fs::path(TEST_DATA_DIR).make_preferred();
 auto test_data_dwarfs = test_dir / "data.dwarfs";
 auto test_catdata_dwarfs = test_dir / "catdata.dwarfs";
@@ -768,6 +770,46 @@ TEST_P(tools_test, end_to_end) {
         ASSERT_EQ(0, ::statfs(mountpoint.c_str(), &stfs)) << runner.cmdline();
         EXPECT_EQ(stfs.f_files, 44) << runner.cmdline();
       }
+
+      {
+        static constexpr auto kInodeInfoXattr{"user.dwarfs.inodeinfo"};
+        std::vector<std::pair<fs::path, std::string_view>> xattr_tests{
+            {mountpoint,
+             "user.dwarfs.driver.pid\0user.dwarfs.driver.perfmon\0user.dwarfs.inodeinfo\0"sv},
+            {mountpoint / "format.sh", "user.dwarfs.inodeinfo\0"sv},
+            {mountpoint / "empty", "user.dwarfs.inodeinfo\0"sv},
+        };
+
+        for (auto const& [path, ref] : xattr_tests) {
+          std::string buf;
+          buf.resize(1);
+
+          auto r = ::listxattr(path.c_str(), buf.data(), buf.size());
+          EXPECT_LT(r, 0) << runner.cmdline();
+          EXPECT_EQ(ERANGE, errno) << runner.cmdline();
+          r = ::listxattr(path.c_str(), buf.data(), 0);
+          EXPECT_GT(r, 0) << runner.cmdline();
+          buf.resize(r);
+          r = ::listxattr(path.c_str(), buf.data(), buf.size());
+          EXPECT_GT(r, 0) << runner.cmdline();
+          EXPECT_EQ(ref, buf) << runner.cmdline();
+
+          buf.resize(1);
+          r = ::getxattr(path.c_str(), kInodeInfoXattr, buf.data(), buf.size());
+          EXPECT_LT(r, 0) << runner.cmdline();
+          EXPECT_EQ(ERANGE, errno) << runner.cmdline();
+          r = ::getxattr(path.c_str(), kInodeInfoXattr, buf.data(), 0);
+          EXPECT_GT(r, 0) << runner.cmdline();
+          buf.resize(r);
+          r = ::getxattr(path.c_str(), kInodeInfoXattr, buf.data(), buf.size());
+          EXPECT_GT(r, 0) << runner.cmdline();
+
+          auto info = folly::parseJson(buf);
+          EXPECT_TRUE(info.count("uid"));
+          EXPECT_TRUE(info.count("gid"));
+          EXPECT_TRUE(info.count("mode"));
+        }
+      }
 #endif
 
       EXPECT_TRUE(runner.unmount()) << runner.cmdline();