package metrics

import (
	"net/http/httptest"
	"testing"
)

func TestLoopbackOpen(t *testing.T) {
	req := httptest.NewRequest("GET", "/metrics", nil)
	if LoopbackOpen(req) {
		t.Fatal("httptest default must not be open")
	}
	req.RemoteAddr = "127.0.0.1:9"
	req.Host = "127.0.0.1:8890"
	if !LoopbackOpen(req) {
		t.Fatal("loopback host+addr")
	}
	req.Header.Set("X-Forwarded-For", "100.1.2.3")
	if LoopbackOpen(req) {
		t.Fatal("forwarded-for is :8443")
	}
	req.Header.Del("X-Forwarded-For")
	req.Host = "orion.scylla-hammerhead.ts.net:8443"
	if LoopbackOpen(req) {
		t.Fatal("tailnet Host is :8443")
	}
	req.Host = "localhost:8890"
	req.RemoteAddr = "[::1]:9"
	if !LoopbackOpen(req) {
		t.Fatal("localhost v6")
	}
}

func TestCoerceFallback(t *testing.T) {
	if CoerceFallback("queue_full") != "queue_full" {
		t.Fatal("keep")
	}
	if CoerceFallback("blocked: resolve evil.example") != "other" {
		t.Fatal("raw must not pass")
	}
}