add: test cases for rcon

internal/pkg/rcon/rcon_test.go

@@ -2,13 +2,34 @@ package rcon
 
 import (
 	"testing"
+
+	"github.com/google/go-cmp/cmp"
 )
 
 func TestNew(t *testing.T) {
-	// This is a placeholder test since we can't actually connect to a server
-	// in a test environment without a real Minecraft server
-	// The actual functionality will be tested with integration tests
-	t.Log("RCON package tests - placeholder for actual tests")
+	serv := MockRCONServer{}
+	done, err := serv.Start()
+	if err != nil {
+		t.Fatalf("failed to start server: %v", err)
+	}
+
+	password := "abc123"
+	client, err := New(serv.Address(), password)
+	if err != nil {
+		t.Fatalf("failed to connect: %v", err)
+	}
+	if _, err = client.Execute("Hello world!"); err != nil {
+		t.Fatalf("failed to run command: %v", err)
+	}
+
+	results := done()
+	want := []string{
+		"abc123",
+		"Hello world!",
+	}
+	if diff := cmp.Diff(want, results.Messages); diff != "" {
+		t.Errorf("Got diff (-want +got):\n%s", diff)
+	}
 }
 
 func TestGetEnvCredentials(t *testing.T) {