Initial commit

tests/common/utils/TestFdWrapper.cc

@@ -0,0 +1,24 @@
+#include <gtest/gtest.h>
+
+#include "common/utils/FdWrapper.h"
+
+namespace hf3fs::test {
+namespace {
+
+TEST(TestFdWrapper, Normal) {
+  int p[2];
+  ASSERT_EQ(::pipe(p), 0);
+
+  FdWrapper fd;
+  ASSERT_EQ(fd, -1);
+
+  fd = p[0];
+  fd = FdWrapper{p[1]};  // p[0] is closed.
+  ASSERT_EQ(fd, p[1]);
+
+  fd = FdWrapper{};  // p[1] is closed.
+  ASSERT_EQ(fd, -1);
+}
+
+}  // namespace
+}  // namespace hf3fs::test