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package cmd
import (
"context"
"encoding/json"
"net/http"
"net/http/httptest"
"strings"
"testing"
"github.com/Devehab/linko/cloudflare"
"github.com/Devehab/linko/config"
)
// fakeAPI is a very small stand-in for the Cloudflare API: it keeps a tunnel
// ingress list and a DNS record table in memory.
type fakeAPI struct {
ingress []cloudflare.IngressRule
records map[string]cloudflare.DNSRecord
deleted []string
}
func newFakeAPI() *fakeAPI {
return &fakeAPI{records: map[string]cloudflare.DNSRecord{}}
}
func (f *fakeAPI) server(t *testing.T) (*cloudflare.Client, *config.Config) {
t.Helper()
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var result any = map[string]any{}
switch {
case strings.HasSuffix(r.URL.Path, "/configurations") && r.Method == http.MethodGet:
result = map[string]any{"tunnel_id": "tun-1", "config": map[string]any{"ingress": f.ingress}}
case strings.HasSuffix(r.URL.Path, "/configurations") && r.Method == http.MethodPut:
var body struct {
Config cloudflare.TunnelConfig `json:"config"`
}
_ = json.NewDecoder(r.Body).Decode(&body)
f.ingress = body.Config.Ingress
case strings.Contains(r.URL.Path, "/dns_records") && r.Method == http.MethodGet:
name := r.URL.Query().Get("name")
out := []cloudflare.DNSRecord{}
if rec, ok := f.records[name]; ok {
out = append(out, rec)
}
result = out
case strings.Contains(r.URL.Path, "/dns_records") && r.Method == http.MethodDelete:
parts := strings.Split(strings.Trim(r.URL.Path, "/"), "/")
id := parts[len(parts)-1]
f.deleted = append(f.deleted, id)
for name, rec := range f.records {
if rec.ID == id {
delete(f.records, name)
}
}
}
w.Header().Set("Content-Type", "application/json")
_ = json.NewEncoder(w).Encode(map[string]any{
"success": true,
"errors": []any{},
"result": result,
})
}))
t.Cleanup(srv.Close)
client := cloudflare.New("t")
client.BaseURL = srv.URL
client.AccountID = "acc-1"
client.ZoneID = "zone-1"
cfg := &config.Config{
AccountID: "acc-1",
ZoneID: "zone-1",
Domain: "example.com",
BaseDomain: "demo.example.com",
TunnelID: "tun-1",
TunnelName: "example-linko-tunnel",
}
return client, cfg
}
func TestRemoveRouteCleansUpEverything(t *testing.T) {
api := newFakeAPI()
api.ingress = cloudflare.UpsertIngress(nil, "crm.demo.example.com", "http://localhost:3000")
api.ingress = cloudflare.UpsertIngress(api.ingress, "api.demo.example.com", "http://localhost:8080")
api.records["crm.demo.example.com"] = cloudflare.DNSRecord{
ID: "rec-crm", Type: "CNAME", Name: "crm.demo.example.com", Content: "tun-1.cfargotunnel.com",
}
client, cfg := api.server(t)
route := config.Route{Name: "crm", Hostname: "crm.demo.example.com", Service: "http://localhost:3000", DNSRecordID: "rec-crm"}
cfg.UpsertRoute(route)
if err := removeRoute(context.Background(), client, cfg, route); err != nil {
t.Fatalf("removeRoute() = %v", err)
}
if _, ok := cloudflare.FindIngress(api.ingress, "crm.demo.example.com"); ok {
t.Error("the ingress rule was not removed")
}
if _, ok := cloudflare.FindIngress(api.ingress, "api.demo.example.com"); !ok {
t.Error("removeRoute removed an unrelated route")
}
if last := api.ingress[len(api.ingress)-1]; last.Hostname != "" || last.Service != cloudflare.CatchAllService {
t.Errorf("the catch-all rule is missing after removal: %+v", api.ingress)
}
if len(api.deleted) != 1 || api.deleted[0] != "rec-crm" {
t.Errorf("DNS deletions = %v, want [rec-crm]", api.deleted)
}
if cfg.FindRoute("crm") != nil {
t.Error("the route is still in the local config")
}
}
func TestRemoveRouteLooksUpMissingRecordID(t *testing.T) {
api := newFakeAPI()
api.ingress = cloudflare.UpsertIngress(nil, "crm.demo.example.com", "http://localhost:3000")
api.records["crm.demo.example.com"] = cloudflare.DNSRecord{
ID: "rec-found", Type: "CNAME", Name: "crm.demo.example.com", Content: "tun-1.cfargotunnel.com",
}
client, cfg := api.server(t)
route := config.Route{Name: "crm", Hostname: "crm.demo.example.com"} // no DNSRecordID
if err := removeRoute(context.Background(), client, cfg, route); err != nil {
t.Fatalf("removeRoute() = %v", err)
}
if len(api.deleted) != 1 || api.deleted[0] != "rec-found" {
t.Fatalf("DNS deletions = %v, want [rec-found]", api.deleted)
}
}
func TestRemoveRouteSkipsForeignDNSRecords(t *testing.T) {
api := newFakeAPI()
api.ingress = cloudflare.UpsertIngress(nil, "crm.demo.example.com", "http://localhost:3000")
// A record that is not owned by a tunnel must not be deleted.
api.records["crm.demo.example.com"] = cloudflare.DNSRecord{
ID: "rec-website", Type: "CNAME", Name: "crm.demo.example.com", Content: "some-host.example.net",
}
client, cfg := api.server(t)
route := config.Route{Name: "crm", Hostname: "crm.demo.example.com"}
if err := removeRoute(context.Background(), client, cfg, route); err != nil {
t.Fatalf("removeRoute() = %v", err)
}
if len(api.deleted) != 0 {
t.Fatalf("deleted %v, want nothing — the record is not a tunnel CNAME", api.deleted)
}
}
func TestRemoveRouteIsIdempotent(t *testing.T) {
api := newFakeAPI()
api.ingress = cloudflare.NormalizeIngress(nil)
client, cfg := api.server(t)
route := config.Route{Name: "gone", Hostname: "gone.demo.example.com"}
if err := removeRoute(context.Background(), client, cfg, route); err != nil {
t.Fatalf("removeRoute() on a missing route = %v", err)
}
if len(api.ingress) != 1 {
t.Fatalf("ingress = %+v, want just the catch-all", api.ingress)
}
}