package otelsetup

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

func TestOTLPHTTPClient_ClosesIdleConnectionsBeforeTheCollector(t *testing.T) {
	c := otlpHTTPClient()
	tr, ok := c.Transport.(*http.Transport)
	if !ok {
		t.Fatalf("transport is %T, want *http.Transport", c.Transport)
	}
	// Alloy's OTLP receiver closes connections idle for 1m; the client must close first.
	if tr.IdleConnTimeout <= 0 || tr.IdleConnTimeout >= time.Minute {
		t.Errorf("IdleConnTimeout = %v, want in (0, 1m)", tr.IdleConnTimeout)
	}
	if c.Timeout != 10*time.Second {
		t.Errorf("Timeout = %v, want 10s (the exporters' default)", c.Timeout)
	}
}