From 7ca846736ce870e28be6cbfbfa4e27e2b0609770 Mon Sep 17 00:00:00 2001
From: Abhinav Gupta <mail@abhinavg.net>
Date: Fri, 3 Jan 2025 18:13:14 -0800
Subject: [PATCH] fix(Context.Run): Don't panic on unselected root node (#484)

---
 context.go   |  4 +++-
 kong_test.go | 13 +++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/context.go b/context.go
index 4fd2302..b6a56e3 100644
--- a/context.go
+++ b/context.go
@@ -827,7 +827,9 @@ func (c *Context) Run(binds ...any) (err error) {
 			if method.IsValid() {
 				node = selected
 			}
-		} else {
+		}
+
+		if node == nil {
 			return fmt.Errorf("no command selected")
 		}
 	}
diff --git a/kong_test.go b/kong_test.go
index 2f3ab47..a7c03b2 100644
--- a/kong_test.go
+++ b/kong_test.go
@@ -2495,3 +2495,16 @@ func TestPrefixXorIssue343(t *testing.T) {
 	_, err = kctx.Parse([]string{"--source-password-file=foo", "--source-password=bar"})
 	assert.Error(t, err)
 }
+
+func TestIssue483EmptyRootNodeNoRun(t *testing.T) {
+	var emptyCLI struct{}
+	parser, err := kong.New(&emptyCLI)
+	assert.NoError(t, err)
+
+	kctx, err := parser.Parse([]string{})
+	assert.NoError(t, err)
+
+	err = kctx.Run()
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "no command selected")
+}