package labeler

import "testing"

// TestIsLocalhost covers the OAuth-mode decision: any IP-literal host (including
// docker-compose private addresses like 172.28.0.x and the standard 127.0.0.1) plus
// the literal "localhost" routes through the loopback OAuth path so PDSes don't have
// to fetch our published client metadata. Domain names go through the public-client
// path and require the metadata endpoint to be reachable from the PDS.
func TestIsLocalhost(t *testing.T) {
	tests := []struct {
		host string
		want bool
	}{
		{"localhost", true},
		{"127.0.0.1", true},
		{"::1", true},
		{"192.168.1.10", true},
		{"172.28.0.4", true}, // docker-compose private network
		{"10.0.0.5", true},   // RFC 1918
		{"labeler.atcr.io", false},
		{"labeler.example.com", false},
		{"", false},
	}
	for _, tt := range tests {
		if got := isLocalhost(tt.host); got != tt.want {
			t.Errorf("isLocalhost(%q) = %v, want %v", tt.host, got, tt.want)
		}
	}
}