Added first mcp tool to test

tests/test.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/electricbubble/gadb"
+	"github.com/modelcontextprotocol/go-sdk/mcp"
+)
+
+type runAdbInput struct {
+	Command      string `json:"command" jsonschema:"the adb shell command to run on the device"`
+	DeviceSerial string `json:"deviceSerial,omitempty" jsonschema:"optional device serial; uses first connected device if empty"`
+}
+
+func runAdb(ctx context.Context, req *mcp.CallToolRequest, input runAdbInput) (*mcp.CallToolResult, any, error) {
+	adbClient, err := gadb.NewClient()
+	if err != nil {
+		return &mcp.CallToolResult{
+			IsError: true,
+			Content: []mcp.Content{
+				&mcp.TextContent{Text: "Failed to connect to ADB server: " + err.Error()},
+			},
+		}, nil, nil
+	}
+
+	devices, err := adbClient.DeviceList()
+	if err != nil {
+		return &mcp.CallToolResult{
+			IsError: true,
+			Content: []mcp.Content{
+				&mcp.TextContent{Text: "Failed to list devices: " + err.Error()},
+			},
+		}, nil, nil
+	}
+
+	if len(devices) == 0 {
+		return &mcp.CallToolResult{
+			IsError: true,
+			Content: []mcp.Content{
+				&mcp.TextContent{Text: "No devices connected"},
+			},
+		}, nil, nil
+	}
+
+	var dev gadb.Device
+	if input.DeviceSerial != "" {
+		found := false
+		for _, d := range devices {
+			if d.Serial() == input.DeviceSerial {
+				dev = d
+				found = true
+				break
+			}
+		}
+		if !found {
+			return &mcp.CallToolResult{
+				IsError: true,
+				Content: []mcp.Content{
+					&mcp.TextContent{Text: "Device not found: " + input.DeviceSerial},
+				},
+			}, nil, nil
+		}
+	} else {
+		dev = devices[0]
+	}
+
+	output, err := dev.RunShellCommand(input.Command)
+	if err != nil {
+		return &mcp.CallToolResult{
+			IsError: true,
+			Content: []mcp.Content{
+				&mcp.TextContent{Text: "Command failed: " + err.Error()},
+			},
+		}, nil, nil
+	}
+
+	return &mcp.CallToolResult{
+		Content: []mcp.Content{
+			&mcp.TextContent{Text: output},
+		},
+	}, nil, nil
+}
+
+func main() {
+	server := mcp.NewServer(&mcp.Implementation{
+		Name:    "cariddi-android-adb",
+		Version: "v1.0.0",
+	}, nil)
+
+	mcp.AddTool(server, &mcp.Tool{
+		Name:        "runAdb",
+		Description: "Run an adb shell command on a connected Android device and return the output. If deviceSerial is omitted, uses the first connected device.",
+	}, runAdb)
+
+	if err := server.Run(context.Background(), &mcp.StdioTransport{}); err != nil {
+		log.Fatal(err)
+	}
+}