[skip changelog] Change discoveries not starting when created

arduino/discovery/discovery.go

@@ -89,9 +89,6 @@ func New(id string, args ...string) (*PluggableDiscovery, error) {
 	if err != nil {
 		return nil, err
 	}
-	if err := proc.Start(); err != nil {
-		return nil, err
-	}
 	messageChan := make(chan *discoveryMessage)
 	disc := &PluggableDiscovery{
 		id:                   id,
@@ -201,9 +198,20 @@ func (disc *PluggableDiscovery) sendCommand(command string) error {
 	}
 }
 
-// Hello sends the HELLO command to the discovery to agree on the pluggable discovery protocol. This
-// must be the first command to run in the communication with the discovery.
-func (disc *PluggableDiscovery) Hello() error {
+func (disc *PluggableDiscovery) runProcess() error {
+	if err := disc.process.Start(); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Run starts the discovery executable process and sends the HELLO command to the discovery to agree on the
+// pluggable discovery protocol. This must be the first command to run in the communication with the discovery.
+func (disc *PluggableDiscovery) Run() error {
+	if err := disc.runProcess(); err != nil {
+		return err
+	}
+
 	if err := disc.sendCommand("HELLO 1 \"arduino-cli " + globals.VersionInfo.VersionString + "\"\n"); err != nil {
 		return err
 	}

arduino/discovery/discovery_test.go

@@ -35,6 +35,9 @@ func TestDiscoveryStdioHandling(t *testing.T) {
 	disc, err := New("test", "testdata/cat/cat") // copy stdin to stdout
 	require.NoError(t, err)
 
+	err = disc.runProcess()
+	require.NoError(t, err)
+
 	_, err = disc.outgoingCommandsPipe.Write([]byte(`{ "eventType":`)) // send partial JSON
 	require.NoError(t, err)
 	msg, err := disc.waitMessage(time.Millisecond * 100)

commands/bundled_tools_serial_discovery.go

@@ -128,7 +128,7 @@ func ListBoards(pm *packagemanager.PackageManager) ([]*discovery.Port, error) {
 	}
 	defer disc.Quit()
 
-	if err = disc.Hello(); err != nil {
+	if err = disc.Run(); err != nil {
 		return nil, fmt.Errorf("starting discovery: %v", err)
 	}
 
@@ -160,7 +160,7 @@ func WatchListBoards(pm *packagemanager.PackageManager) (<-chan *discovery.Event
 		return nil, err
 	}
 
-	if err = disc.Hello(); err != nil {
+	if err = disc.Run(); err != nil {
 		return nil, fmt.Errorf("starting discovery: %v", err)
 	}