diff --git a/test_main.cpp b/test_main.cpp
index ea4dfd1..5c6c78e 100644
--- a/test_main.cpp
+++ b/test_main.cpp
@@ -175,6 +175,20 @@
     EXPECT_FALSE(hs2 <= hs1);
 }
 
+// empty string optimization should apply for any constructor
+TEST_F(LibHidlTest, HidlStringEmptyLiteralAllocation) {
+    using android::hardware::hidl_string;
+
+    hidl_string empty1;
+    hidl_string empty2("");
+    hidl_string empty3("foo", 0);
+    hidl_string empty4((std::string()));
+
+    EXPECT_EQ(empty1.c_str(), empty2.c_str());
+    EXPECT_EQ(empty1.c_str(), empty3.c_str());
+    EXPECT_EQ(empty1.c_str(), empty4.c_str());
+}
+
 TEST_F(LibHidlTest, MemoryTest) {
     using android::hardware::hidl_memory;