xbee: add session test

xbee/session_test.go

@@ -0,0 +1,74 @@
+/*
+Package xbee provides communication and configuration of Digi XBee products
+
+(and other Digi products that are similar such as the XLR Pro). It provides
+a net.Conn-like interface as well as AT commands for configuration. The most
+common usage of the package is with a Session, which provides
+*/
+package xbee
+
+import (
+	"encoding/binary"
+	"os"
+	"testing"
+
+	"golang.org/x/exp/slog"
+)
+
+
+func TestXBeeHardware(t *testing.T) {
+	// this test runs only if the environemnt variable
+	// XBEE_DEVICE is set.
+
+	devStr, ok := os.LookupEnv("XBEE_DEVICE")
+
+	if !ok {
+		t.Skip("No XBee device provided")
+	}
+
+	var sess *Session = nil
+	defer sess.Close()
+	// test connection.
+	t.Run("Connect to device", func(t *testing.T) {
+		dev, err := ParseDeviceString(devStr)
+		if err != nil {
+			t.Errorf("ParseDeviceString() error = %v", err)
+		}
+		sess, err = NewSession(dev, slog.With("type", dev.Type()))
+		if err != nil {
+			t.Errorf("NewSession() error = %v", err)
+		}
+		// err = sess.Close()
+		// if err != nil {
+		// 	t.Errorf("Session.Close() error = %v", err)
+		// }
+
+	})
+	
+	// now we should test sending a packet. and getting a response.
+
+	t.Run("Get Network ID", func(t *testing.T) {
+		b, err := sess.ATCommand([2]rune{'I','D'}, nil, false)
+		if err != nil {
+			t.Errorf("ATCommand() error = %v", err)
+		}
+		if len(b) != 2 {
+			t.Errorf("reponse length mismatch: expected 2 got %d", len(b))
+		}
+	})
+
+	t.Run("Check NP", func(t *testing.T) {
+		b, err := sess.ATCommand([2]rune{'N','P'}, nil, false)
+
+		if err != nil {
+			t.Errorf("ATCommand() error = %v", err)
+		}
+
+		val := binary.BigEndian.Uint16(b)
+		if val != 0x100 {
+			t.Errorf("NP response wrong, expected 0x100 got %x", val)
+		}
+	})
+
+
+}