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// Copyright (C) 2020 Evgeny Kuznetsov (evgeny@kuznetsov.md)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"bytes"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path/filepath"
"strings"
"sync"
"testing"
"github.com/gorilla/feeds"
)
var (
update = flag.Bool("update", false, "update .golden files")
fakeURL = `**localhost**`
)
const pth = "testdata/brand/57083"
func helperLoadBytes(t testing.TB, name string) []byte {
t.Helper()
path := filepath.Join("testdata", name)
bytes, err := ioutil.ReadFile(path)
if err != nil {
t.Fatal(err)
}
return bytes
}
func TestFeed(t *testing.T) {
var page []byte
feed := &feeds.Feed{
Link: &feeds.Link{Href: "http://www.radiorus.ru/brand/57083/episodes"},
}
err := populateFeed(feed, page)
assertStringContains(t, fmt.Sprint(err), "bad programme")
page = helperLoadBytes(t, "episodes")
page = cleanText(page)
if err := populateFeed(feed, page); err != nil {
t.Fatal(err)
}
page = helperLoadBytes(t, "about")
page = cleanText(page)
feed.Description, _ = processFeedDesc(page)
actual := createFeed(feed)
golden := filepath.Join("testdata", t.Name()+".golden")
if *update {
writeFile(actual, golden)
}
expected, _ := ioutil.ReadFile(golden)
if !bytes.Equal(actual, expected) {
t.Fail()
}
}
func TestMissingEpisode(t *testing.T) {
server := helperMockServer(t)
defer helperCleanupServer(t)
item := feeds.Item{
Id: "aabb",
Link: &feeds.Link{Href: fmt.Sprintf("%s/brand/none", server.URL)},
}
var buf bytes.Buffer
log.SetOutput(&buf)
defer func() { log.SetOutput(os.Stderr) }()
var wg sync.WaitGroup
wg.Add(1)
describeEpisode(&item, &wg)
assertStringContains(t, buf.String(), fmt.Sprintf("could not find episode description on page %v: %v", item.Link.Href, errCantParse))
}
func assertStringContains(t *testing.T, got, want string) {
if !strings.Contains(got, want) {
t.Fatalf("%v does not contain %v", got, want)
}
}
func TestMissingFeedDesc(t *testing.T) {
server := helperMockServer(t)
defer helperCleanupFile(t, "episodes")
helperCleanupFile(t, "about")
var buf bytes.Buffer
log.SetOutput(&buf)
defer func() { log.SetOutput(os.Stderr) }()
processURL(fmt.Sprintf("%s/brand/57083/episodes", server.URL))
assertStringContains(t, buf.String(), fmt.Sprintf("could not find programme description on page %v: %v", server.URL+"/brand/57083/about", errCantParse))
}
func TestMissingFeed(t *testing.T) {
server := helperMockServer(t)
defer helperCleanupServer(t)
if os.Getenv("DO_CRASH") == "1" {
processURL(fmt.Sprintf("%s/brand/57084/episodes", server.URL))
return
}
cmd := exec.Command(os.Args[0], "-test.run=TestMissingFeed")
cmd.Env = append(os.Environ(), "DO_CRASH=1")
out, err := cmd.CombinedOutput()
if e, ok := err.(*exec.ExitError); !(ok && !e.Success()) {
t.Fatalf("process ran with err %v, want exit status 1", err)
}
assertStringContains(t, string(out), fmt.Sprint("84/episodes: bad programme page"))
}
func TestServedFeed(t *testing.T) {
server := helperMockServer(t)
defer helperCleanupServer(t)
feed := processURL(fmt.Sprintf("%s/brand/57083/episodes", server.URL))
actual := bytes.ReplaceAll(createFeed(feed), []byte(server.URL), []byte(fakeURL))
golden := filepath.Join("testdata", t.Name()+".golden")
if *update {
writeFile(actual, golden)
}
expected, _ := ioutil.ReadFile(golden)
if !bytes.Equal(actual, expected) {
t.Fail()
}
}
func BenchmarkServedFeed(b *testing.B) {
server := helperMockServer(b)
defer helperCleanupServer(b)
for n := 0; n < b.N; n++ {
processURL(fmt.Sprintf("%s/brand/57083/episodes", server.URL))
}
}
func helperMockServer(t testing.TB) *httptest.Server {
t.Helper()
fileserver := http.FileServer(http.Dir("testdata"))
server := httptest.NewServer(fileserver)
episodes := helperLoadBytes(t, "episodes")
writeFile(episodes, filepath.Join(pth, "episodes"))
about := helperLoadBytes(t, "about")
writeFile(about, filepath.Join(pth, "about"))
return server
}
func helperCleanupServer(t testing.TB) {
t.Helper()
helperCleanupFile(t, "episodes")
helperCleanupFile(t, "about")
}
func helperCleanupFile(t testing.TB, name string) {
t.Helper()
if err := os.Remove(filepath.Join(pth, name)); err != nil {
t.Fatal(err)
}
}
func TestEpisodeURLPrefix(t *testing.T) {
url := "http://www.radiorus.ru/brand/57083/episodes"
got := episodeURLPrefix(url)
want := "http://www.radiorus.ru/brand/"
if got != want {
t.Fatalf("got %v, want %v", got, want)
}
}
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