Switch to IPv4 zeroconf, add test framework with discovery test, fix serial enumeration

cmd/test/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/theater/picomap/lib/client"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintf(os.Stderr, "usage: test <name>\n")
+		os.Exit(1)
+	}
+
+	if err := run(os.Args[1]); err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func run(name string) error {
+	devs, err := client.ListSerial()
+	if err != nil {
+		return err
+	}
+
+	var testDev string
+	for _, dev := range devs {
+		c, err := client.NewSerial(dev, 2*time.Second)
+		if err != nil {
+			continue
+		}
+		info, err := c.Info()
+		c.Close()
+		if err != nil {
+			continue
+		}
+		if info.FirmwareName == "picomap_test" {
+			testDev = dev
+			break
+		}
+	}
+	if testDev == "" {
+		return fmt.Errorf("no picomap_test device found")
+	}
+
+	fmt.Printf("test %s on %s\n", name, testDev)
+
+	c, err := client.NewSerial(testDev, 10*time.Second)
+	if err != nil {
+		return err
+	}
+	defer c.Close()
+
+	result, err := c.Test(name)
+	if err != nil {
+		return fmt.Errorf("remote: %w", err)
+	}
+
+	for _, msg := range result.Messages {
+		fmt.Printf("  [remote] %s\n", msg)
+	}
+
+	if result.Pass {
+		fmt.Println("PASS")
+	} else {
+		fmt.Println("FAIL")
+		os.Exit(1)
+	}
+	return nil
+}