diff --git a/test/net/addr/sock.cpp b/test/net/addr/sock.cpp
index 4aee5c5..372092e 100644
--- a/test/net/addr/sock.cpp
+++ b/test/net/addr/sock.cpp
@@ -1,7 +1,11 @@
 #include <stdplus/net/addr/sock.hpp>
 
+#include <string_view>
+
 #include <gtest/gtest.h>
 
+using std::literals::string_view_literals::operator""sv;
+
 namespace stdplus
 {
 
@@ -41,14 +45,62 @@
     EXPECT_EQ(sizeof(sockaddr_in6), addr1.sockaddrLen());
 }
 
+TEST(SockUAddr, Basic)
+{
+    // Non-abstract Requires null-terminator
+    EXPECT_THROW(SockUAddr(std::string(SockUAddr::maxLen, 'a')),
+                 std::invalid_argument);
+    EXPECT_NO_THROW(SockUAddr(std::string(SockUAddr::maxLen - 1, 'a')));
+
+    // Abstract can use the full space
+    EXPECT_THROW(SockUAddr(std::string(SockUAddr::maxLen + 1, '\0')),
+                 std::invalid_argument);
+    EXPECT_NO_THROW(SockUAddr(std::string(SockUAddr::maxLen, '\0')));
+
+    EXPECT_THROW(SockUAddr("hi\0o"sv), std::invalid_argument);
+
+    constexpr SockUAddr addr1{"@hi"sv};
+    constexpr SockUAddr addr2{"\0hi"sv};
+    constexpr SockUAddr addr3{"/nope"sv};
+    constexpr SockUAddr addr4{""sv};
+
+    EXPECT_EQ(addr1, addr1);
+    EXPECT_EQ(addr1, addr2);
+    EXPECT_NE(addr3, addr1);
+    EXPECT_NE(addr4, addr1);
+    EXPECT_NE(addr4, addr3);
+
+    EXPECT_EQ(addr1.path(), "@hi"sv);
+    EXPECT_EQ(addr2.path(), "@hi"sv);
+    EXPECT_EQ(addr3.path(), "/nope"sv);
+    EXPECT_EQ(addr4.path(), ""sv);
+
+    auto addr = addr1.sockaddr();
+    EXPECT_EQ(AF_UNIX, addr.sun_family);
+    EXPECT_EQ("\0hi"sv, std::string_view(addr.sun_path, 3));
+    auto buf = addr2.buf();
+    auto ptr = reinterpret_cast<std::uint8_t*>(&buf);
+    EXPECT_TRUE(
+        std::equal(ptr, ptr + buf.len, reinterpret_cast<std::uint8_t*>(&addr)));
+    addr = addr3;
+    EXPECT_EQ("/nope\0"sv, std::string_view(addr.sun_path, 6));
+    EXPECT_EQ(addr1.sockaddrLen(), sizeof(addr.sun_family) + 3);
+    EXPECT_EQ(addr2.sockaddrLen(), sizeof(addr.sun_family) + 3);
+    EXPECT_EQ(addr3.sockaddrLen(), sizeof(addr.sun_family) + 6);
+    EXPECT_EQ(addr4.sockaddrLen(), sizeof(addr.sun_family));
+}
+
 TEST(SockAnyAddr, Basic)
 {
     constexpr SockAnyAddr addr1(std::in_place_type<Sock4Addr>, In4Addr{255},
                                 3959);
+    constexpr SockAnyAddr addr2(std::in_place_type<SockUAddr>, "/hi"sv);
+    EXPECT_NE(addr1, addr2);
     EXPECT_EQ(addr1, addr1);
     auto buf = addr1.buf();
     EXPECT_EQ(buf.len, sizeof(sockaddr_in));
     EXPECT_EQ(addr1.sockaddrLen(), sizeof(sockaddr_in));
+    EXPECT_EQ(addr2.sockaddrLen(), sizeof(sa_family_t) + 4);
 }
 
 } // namespace stdplus