diff --git a/test/test_util.cpp b/test/test_util.cpp
index 25953a1..0e58081 100644
--- a/test/test_util.cpp
+++ b/test/test_util.cpp
@@ -45,6 +45,30 @@
     EXPECT_EQ("70:FF:84:09:35:09", mac_address::toString(mac2));
 }
 
+TEST_F(TestUtil, AddrFromBuf)
+{
+    std::string tooSmall(1, 'a');
+    std::string tooLarge(24, 'a');
+
+    struct in_addr ip1;
+    EXPECT_EQ(1, inet_pton(AF_INET, "192.168.10.1", &ip1));
+    std::string_view buf1(reinterpret_cast<char*>(&ip1), sizeof(ip1));
+    InAddrAny res1 = addrFromBuf(AF_INET, buf1);
+    EXPECT_EQ(0, memcmp(&ip1, &std::get<struct in_addr>(res1), sizeof(ip1)));
+    EXPECT_THROW(addrFromBuf(AF_INET, tooSmall), std::runtime_error);
+    EXPECT_THROW(addrFromBuf(AF_INET, tooLarge), std::runtime_error);
+    EXPECT_THROW(addrFromBuf(AF_UNSPEC, buf1), std::runtime_error);
+
+    struct in6_addr ip2;
+    EXPECT_EQ(1, inet_pton(AF_INET6, "fdd8:b5ad:9d93:94ee::2:1", &ip2));
+    std::string_view buf2(reinterpret_cast<char*>(&ip2), sizeof(ip2));
+    InAddrAny res2 = addrFromBuf(AF_INET6, buf2);
+    EXPECT_EQ(0, memcmp(&ip2, &std::get<struct in6_addr>(res2), sizeof(ip2)));
+    EXPECT_THROW(addrFromBuf(AF_INET6, tooSmall), std::runtime_error);
+    EXPECT_THROW(addrFromBuf(AF_INET6, tooLarge), std::runtime_error);
+    EXPECT_THROW(addrFromBuf(AF_UNSPEC, buf2), std::runtime_error);
+}
+
 TEST_F(TestUtil, IpToString)
 {
     struct in_addr ip1;