Add IPv4 address tests

Author: krzysztofwos

test/net/unit/ip4_addr.cpp

@@ -52,6 +52,15 @@ CASE("Create IP4 addresses from strings")
   Addr ipv4_address {extra_whitespace_addr_str};
   EXPECT(ipv4_address.str() == "10.0.0.42");
 
+  EXPECT_NO_THROW(Addr("202.209.27.78"));
+  EXPECT_NO_THROW(Addr("212.209.27.78"));
+  EXPECT_NO_THROW(Addr("222.209.27.78"));
+  EXPECT_NO_THROW(Addr("232.209.27.78"));
+  EXPECT_NO_THROW(Addr("242.209.27.78"));
+  EXPECT_NO_THROW(Addr("255.209.27.78"));
+  EXPECT_THROWS(Addr("265.209.27.78"));
+  EXPECT_THROWS(Addr("256.209.27.78"));
+
   EXPECT_THROWS(Addr{"LUL"});
   EXPECT_THROWS(Addr{"12310298310298301283"});
   EXPECT_THROWS(const Addr invalid{"256.256.256.256"});