Add more from the std

crates/std/src/net/ip_addr/tests.rs

@@ -0,0 +1,8 @@
+use crate::net::Ipv4Addr;
+use crate::net::test::{sa4, tsa};
+
+#[test]
+fn to_socket_addr_socketaddr() {
+    let a = sa4(Ipv4Addr::new(77, 88, 21, 11), 12345);
+    assert_eq!(Ok(vec![a]), tsa(a));
+}