net: improve socket_test (#6822)

vlib/net/socket_test.v

@@ -1,12 +1,20 @@
 import net
 
 fn setup() (net.Socket, net.Socket, net.Socket) {
-	server := net.listen(0) or { panic(err)	}
+	server := net.listen(0) or {
+		panic(err)
+	}
 	server_port := server.get_port()
-	client := net.dial('127.0.0.1', server_port) or { panic(err) }
-	socket := server.accept() or { panic(err) }
+	client := net.dial('127.0.0.1', server_port) or {
+		panic(err)
+	}
+	socket := server.accept() or {
+		panic(err)
+	}
 	$if debug_peer_ip ? {
-		ip := socket.peer_ip() or { '$err' }
+		ip := socket.peer_ip() or {
+			'$err'
+		}
 		eprintln('socket peer_ip: $ip')
 	}
 	return server, client, socket
@@ -20,43 +28,79 @@ fn cleanup(server &net.Socket, client &net.Socket, socket &net.Socket) {
 
 fn test_socket() {
 	server, client, socket := setup()
+	defer {
+		cleanup(server, client, socket)
+	}
 	message := 'Hello World'
-	socket.send(message.str, message.len) or { assert false }
-	$if debug {	println('message send: $message')	}
-	$if debug {	println('send socket: $socket.sockfd')	}
-
+	socket.send(message.str, message.len) or {
+		assert false
+	}
+	$if debug {
+		println('message send: $message')
+	}
+	$if debug {
+		println('send socket: $socket.sockfd')
+	}
 	bytes, blen := client.recv(1024)
 	received := tos(bytes, blen)
-	$if debug {	println('message received: $received')	}
-	$if debug {	println('client: $client.sockfd')	}
-
+	$if debug {
+		println('message received: $received')
+	}
+	$if debug {
+		println('client: $client.sockfd')
+	}
 	assert message == received
+}
+
+fn test_socket_read_line() {
+	server, client, socket := setup()
+	defer {
 		cleanup(server, client, socket)
 	}
+	message1, message2 := 'message1', 'message2'
+	message := '$message1\n$message2'
+	socket.write(message) or {
+		assert false
+	}
+	line1, line2 := client.read_line(), client.read_line()
+	assert line1 != message1
+	assert line1.trim_space() == message1
+	assert line2 != message2
+	assert line2.trim_space() == message2
+}
 
 fn test_socket_write() {
 	server, client, socket := setup()
+	defer {
+		cleanup(server, client, socket)
+	}
 	message1 := 'a message 1'
-	socket.write(message1) or { assert false }
+	socket.write(message1) or {
+		assert false
+	}
 	line1 := client.read_line()
 	assert line1 != message1
 	assert line1.trim_space() == message1
-	cleanup(server, client, socket)
 }
 
 fn test_socket_write_fail_without_panic() {
 	server, client, socket := setup()
+	defer {
+		cleanup(server, client, socket)
+	}
 	message2 := 'a message 2'
 	// ensure that socket.write (i.e. done on the server side)
 	// continues to work, even when the client side has been disconnected
 	// this test is important for a stable long standing server
 	client.close() or { }
-	$if solaris { return } // TODO: fix segfaulting on Solaris
+	$if solaris {
+		return
+	}
+	// TODO: fix segfaulting on Solaris
 	for i := 0; i < 3; i++ {
 		socket.write(message2) or {
 			println('write to a socket without a recipient should produce an option fail: $err | $message2')
 			assert true
 		}
 	}
-	cleanup(server, client, socket)
 }