vweb: change optional to result in vweb_test (#16412)

vlib/vweb/tests/vweb_test.v

@@ -109,17 +109,17 @@ fn test_a_simple_tcp_client_html_page() {
 }
 
 // net.http client based tests follow:
-fn assert_common_http_headers(x http.Response) ? {
+fn assert_common_http_headers(x http.Response) ! {
 	assert x.status() == .ok
-	assert x.header.get(.server)? == 'VWeb'
+	assert x.header.get(.server)! == 'VWeb'
-	assert x.header.get(.content_length)?.int() > 0
+	assert x.header.get(.content_length)!.int() > 0
-	assert x.header.get(.connection)? == 'close'
+	assert x.header.get(.connection)! == 'close'
 }
 
 fn test_http_client_index() {
 	x := http.get('http://$localserver/') or { panic(err) }
-	assert_common_http_headers(x)?
+	assert_common_http_headers(x)!
-	assert x.header.get(.content_type)? == 'text/plain'
+	assert x.header.get(.content_type)! == 'text/plain'
 	assert x.body == 'Welcome to VWeb'
 }
 
@@ -137,35 +137,35 @@ fn test_http_client_404() {
 
 fn test_http_client_simple() {
 	x := http.get('http://$localserver/simple') or { panic(err) }
-	assert_common_http_headers(x)?
+	assert_common_http_headers(x)!
-	assert x.header.get(.content_type)? == 'text/plain'
+	assert x.header.get(.content_type)! == 'text/plain'
 	assert x.body == 'A simple result'
 }
 
 fn test_http_client_html_page() {
 	x := http.get('http://$localserver/html_page') or { panic(err) }
-	assert_common_http_headers(x)?
+	assert_common_http_headers(x)!
-	assert x.header.get(.content_type)? == 'text/html'
+	assert x.header.get(.content_type)! == 'text/html'
 	assert x.body == '<h1>ok</h1>'
 }
 
 fn test_http_client_settings_page() {
 	x := http.get('http://$localserver/bilbo/settings') or { panic(err) }
-	assert_common_http_headers(x)?
+	assert_common_http_headers(x)!
 	assert x.body == 'username: bilbo'
 	//
 	y := http.get('http://$localserver/kent/settings') or { panic(err) }
-	assert_common_http_headers(y)?
+	assert_common_http_headers(y)!
 	assert y.body == 'username: kent'
 }
 
 fn test_http_client_user_repo_settings_page() {
 	x := http.get('http://$localserver/bilbo/gostamp/settings') or { panic(err) }
-	assert_common_http_headers(x)?
+	assert_common_http_headers(x)!
 	assert x.body == 'username: bilbo | repository: gostamp'
 	//
 	y := http.get('http://$localserver/kent/golang/settings') or { panic(err) }
-	assert_common_http_headers(y)?
+	assert_common_http_headers(y)!
 	assert y.body == 'username: kent | repository: golang'
 	//
 	z := http.get('http://$localserver/missing/golang/settings') or { panic(err) }
@@ -187,7 +187,7 @@ fn test_http_client_json_post() {
 	$if debug_net_socket_client ? {
 		eprintln('/json_echo endpoint response: $x')
 	}
-	assert x.header.get(.content_type)? == 'application/json'
+	assert x.header.get(.content_type)! == 'application/json'
 	assert x.body == json_for_ouser
 	nuser := json.decode(User, x.body) or { User{} }
 	assert '$ouser' == '$nuser'
@@ -196,7 +196,7 @@ fn test_http_client_json_post() {
 	$if debug_net_socket_client ? {
 		eprintln('/json endpoint response: $x')
 	}
-	assert x.header.get(.content_type)? == 'application/json'
+	assert x.header.get(.content_type)! == 'application/json'
 	assert x.body == json_for_ouser
 	nuser2 := json.decode(User, x.body) or { User{} }
 	assert '$ouser' == '$nuser2'
@@ -221,7 +221,7 @@ $contents\r
 			value: ct
 		)
 		data: data
-	)?
+	)!
 	$if debug_net_socket_client ? {
 		eprintln('/form_echo endpoint response: $x')
 	}
@@ -264,7 +264,7 @@ struct SimpleTcpClientConfig {
 	content string
 }
 
-fn simple_tcp_client(config SimpleTcpClientConfig) ?string {
+fn simple_tcp_client(config SimpleTcpClientConfig) !string {
 	mut client := &net.TcpConn(0)
 	mut tries := 0
 	for tries < config.retries {
@@ -297,8 +297,8 @@ $config.content'
 	$if debug_net_socket_client ? {
 		eprintln('sending:\n$message')
 	}
-	client.write(message.bytes())?
+	client.write(message.bytes())!
-	read := io.read_all(reader: client)?
+	read := io.read_all(reader: client)!
 	$if debug_net_socket_client ? {
 		eprintln('received:\n$read')
 	}

vlib/vweb/tests/vweb_test_server.v

@@ -44,7 +44,7 @@ fn main() {
 		global_config: config
 	}
 	eprintln('>> webserver: pid: $os.getpid(), started on http://localhost:$app.port/ , with maximum runtime of $app.timeout milliseconds.')
-	vweb.run_at(app, host: 'localhost', port: http_port, family: .ip)?
+	vweb.run_at(app, host: 'localhost', port: http_port, family: .ip)!
 }
 
 // pub fn (mut app App) init_server() {