package api

import (
	"errors"
	"strings"
	"testing"
)

type stubPolicyLoader struct {
	calls int
	err   error
}

func (loader *stubPolicyLoader) LoadPolicy() error {
	loader.calls++
	return loader.err
}

func TestReloadPoliciesRefreshesEveryRuntimeEnforcer(t *testing.T) {
	first, second := &stubPolicyLoader{}, &stubPolicyLoader{}
	if err := reloadPolicies(map[string]policyLoader{"*": first, "tenant": second}); err != nil {
		t.Fatal(err)
	}
	if first.calls != 1 || second.calls != 1 {
		t.Fatalf("reload calls first=%d second=%d", first.calls, second.calls)
	}
}

func TestReloadPoliciesFailsClosed(t *testing.T) {
	failure := &stubPolicyLoader{err: errors.New("adapter unavailable")}
	err := reloadPolicies(map[string]policyLoader{"*": failure})
	if err == nil || !strings.Contains(err.Error(), "adapter unavailable") || failure.calls != 1 {
		t.Fatalf("unexpected reload failure: %v calls=%d", err, failure.calls)
	}
	if err := reloadPolicies(map[string]policyLoader{"*": nil}); err == nil {
		t.Fatal("nil enforcer was accepted")
	}
}