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package imgw
import (
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"strings"
"testing"
"time"
)
func serve(t *testing.T, fixture string, gotQuery *string) *httptest.Server {
t.Helper()
body, err := os.ReadFile(filepath.Join("testdata", fixture))
if err != nil {
t.Fatal(err)
}
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if gotQuery != nil {
*gotQuery = r.URL.RawQuery
}
w.Write(body)
}))
t.Cleanup(srv.Close)
return srv
}
func serveText(t *testing.T, body string) *httptest.Server {
t.Helper()
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(body))
}))
t.Cleanup(srv.Close)
return srv
}
func pinClock(t *testing.T, at time.Time) {
t.Helper()
old := now
now = func() time.Time { return at }
t.Cleanup(func() { now = old })
}
// A point inside Poland resolves to the first four digits of its TERYT code.
func TestPowiatTruncatesTerytToFourDigits(t *testing.T) {
srv := serve(t, "gugik_krakow.json", nil)
gugikURL = srv.URL
code, status, err := Powiat(50.0617, 19.9373)
if err != nil {
t.Fatal(err)
}
if status != StatusOK {
t.Fatalf("status = %v, want StatusOK", status)
}
if code != "1261" {
t.Fatalf("code = %q, want 1261 (first four digits of 126101)", code)
}
}
// GUGiK answers a foreign point with HTTP 200 and no results. That is a real
// answer -- "not in Poland" -- and must never be confused with a failure, which
// is the difference between "no warnings apply" and "I do not know".
func TestPowiatOutsidePolandIsAnAnswerNotAnError(t *testing.T) {
srv := serve(t, "gugik_abroad.json", nil)
gugikURL = srv.URL
code, status, err := Powiat(52.52, 13.40)
if err != nil {
t.Fatalf("a valid 'no results' response must not be an error: %v", err)
}
if status != StatusOutside {
t.Fatalf("status = %v, want StatusOutside", status)
}
if code != "" {
t.Fatalf("code = %q, want empty", code)
}
}
func TestPowiatUnreachableIsStatusError(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
http.Error(w, "boom", http.StatusBadGateway)
}))
srv.Close() // closed: the request cannot connect at all
gugikURL = srv.URL
_, status, err := Powiat(50, 21)
if status != StatusError {
t.Fatalf("status = %v, want StatusError", status)
}
if err == nil {
t.Fatal("expected an error describing the failure")
}
}
// The default 100 m radius finds nothing in the mountains, which is
// indistinguishable from being abroad and would suppress real warnings.
func TestPowiatAsksForAWideRadius(t *testing.T) {
var query string
srv := serve(t, "gugik_krakow.json", &query)
gugikURL = srv.URL
if _, _, err := Powiat(50, 21); err != nil {
t.Fatal(err)
}
if !strings.Contains(query, "radius=10000") {
t.Fatalf("query %q must ask for a wide radius", query)
}
}
func TestWarningsKeepOnlyThisPowiat(t *testing.T) {
pinClock(t, time.Date(2000, 1, 1, 0, 0, 0, 0, time.Local)) // nothing expired
body := `[
{"nazwa_zdarzenia":"Upal","stopien":"1","obowiazuje_do":"2030-01-01 00:00:00","teryt":["1261","1234"]},
{"nazwa_zdarzenia":"Burze","stopien":"2","obowiazuje_do":"2030-01-01 00:00:00","teryt":["2207"]}
]`
srv := serveText(t, body)
warningsURL = srv.URL
live, err := Warnings("1261")
if err != nil {
t.Fatal(err)
}
if len(live) != 1 || live[0].Event != "Upal" {
t.Fatalf("got %+v, want only the warning covering 1261", live)
}
}
func TestWarningsDropExpiredButKeepUnparseableDates(t *testing.T) {
pinClock(t, time.Date(2026, 8, 10, 12, 0, 0, 0, time.Local))
body := `[
{"nazwa_zdarzenia":"Wczorajsze","stopien":"1","obowiazuje_do":"2026-08-09 23:00:00","teryt":["1261"]},
{"nazwa_zdarzenia":"Trwajace","stopien":"1","obowiazuje_do":"2026-08-10 20:00:00","teryt":["1261"]},
{"nazwa_zdarzenia":"Bezdaty","stopien":"1","obowiazuje_do":"","teryt":["1261"]}
]`
srv := serveText(t, body)
warningsURL = srv.URL
live, err := Warnings("1261")
if err != nil {
t.Fatal(err)
}
var names []string
for _, w := range live {
names = append(names, w.Event)
}
got := strings.Join(names, ",")
// Unparseable is kept: showing a stale warning beats hiding a live one.
if got != "Trwajace,Bezdaty" {
t.Fatalf("got %q, want \"Trwajace,Bezdaty\"", got)
}
}
// IMGW has been seen to encode TERYT codes as numbers as well as strings.
func TestWarningsMatchNumericTerytCodes(t *testing.T) {
pinClock(t, time.Date(2000, 1, 1, 0, 0, 0, 0, time.Local))
srv := serveText(t, `[{"nazwa_zdarzenia":"X","obowiazuje_do":"2030-01-01 00:00:00","teryt":[1261]}]`)
warningsURL = srv.URL
live, err := Warnings("1261")
if err != nil {
t.Fatal(err)
}
if len(live) != 1 {
t.Fatalf("a numeric teryt entry must still match, got %d warnings", len(live))
}
}
func TestWarningsUnreachableIsAnError(t *testing.T) {
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
srv.Close()
warningsURL = srv.URL
if _, err := Warnings("1261"); err == nil {
t.Fatal("expected an error: the caller must be able to say 'could not check'")
}
}
// The recorded national feed must parse, and must not match a made-up powiat.
func TestWarningsParseTheRecordedFeed(t *testing.T) {
pinClock(t, time.Date(2000, 1, 1, 0, 0, 0, 0, time.Local))
srv := serve(t, "warnings.json", nil)
warningsURL = srv.URL
if _, err := Warnings("1261"); err != nil {
t.Fatalf("the recorded feed must parse: %v", err)
}
none, err := Warnings("9999")
if err != nil {
t.Fatal(err)
}
if len(none) != 0 {
t.Fatalf("powiat 9999 does not exist but matched %d warnings", len(none))
}
}
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