package latest
import "testing"
// Trimmed from https://asurascans.com/comics/chronicles-of-the-demon-faction-f886a8af
// fetched 2026-07-26. The first anchor is the "First Chapter" shortcut: it is a
// real chapter link with no "Chapter N" text, and it must not be mistaken for
// the latest just because it parses.
const asuraSeriesFixture = `
First ChapterChapter 179Chapter 181Chapter 180
`
// A chapter link belonging to a different series, of the kind a "you might also
// like" strip would introduce. Slug scoping must exclude it.
const asuraCrossSeriesFixture = asuraSeriesFixture + `
Chapter 999
`
// Trimmed from https://demonicscans.org/manga/Catastrophic-Necromancer fetched
// 2026-07-26. Note the raw "&", the doubled space after Chapter 0.5
Chapter 294Chapter 296Chapter 295
`
// What Cloudflare serves instead of the page when an IP's bot score flips.
const challengeFixture = `Just a moment...
Checking your browser
`
// Trimmed from the server-rendered HTML of
// https://comix.to/title/n8we-dungeons-and-crayons fetched 2026-08-03. comix is
// an SPA: the page ships a JSON state blob rather than a list of chapter
// anchors, and latestChapterUrl is where the newest chapter actually lives.
const comixSeriesFixture = `
{"firstChapterUrl":"/title/n8we-dungeons-and-crayons/5038739-chapter-1","latestChapterUrl":"/title/n8we-dungeons-and-crayons/11139891-chapter-80"},
{""manga","recommended","n8we",1]":{"items":[{"latestChapterUrl":"/title/qqwrm-full-time-awakening/99999999-chapter-999"}]}
`
// The kagane branch is fed by the browser fetcher, so the body is API JSON, not
// HTML. Trimmed from GET /api/v2/series/ on 2026-08-03.
const kaganeAPIFixture = `
{"series_id":"019f84bc-9ba0-7ed9-86f5-8b905ec7c28b","title":"Infinite Decryption",
"series_books":[{"book_id":"a","title":"Episode 1","chapter_no":"1","sort_no":1},
{"book_id":"b","title":"Episode 41","chapter_no":"41","sort_no":41},
{"book_id":"c","title":"Episode 40.5","chapter_no":"40.5","sort_no":40}]}
`
func TestLatestChapterFrom(t *testing.T) {
const asuraURL = "https://asurascans.com/comics/chronicles-of-the-demon-faction-f886a8af"
const demonicURL = "https://demonicscans.org/manga/Catastrophic-Necromancer"
tests := []struct {
name string
site string
seriesURL string
body string
wantOK bool
wantNum float64
wantLabel string
}{
{
name: "asura takes the max, not the last listed",
site: "asura", seriesURL: asuraURL, body: asuraSeriesFixture,
wantOK: true, wantNum: 181, wantLabel: "Chapter 181",
},
{
name: "asura ignores another series' chapter links",
site: "asura", seriesURL: asuraURL, body: asuraCrossSeriesFixture,
wantOK: true, wantNum: 181, wantLabel: "Chapter 181",
},
{
name: "asura scoping survives a build-hash rotation",
site: "asura",
seriesURL: "https://asurascans.com/comics/chronicles-of-the-demon-faction-059befe1",
body: asuraCrossSeriesFixture,
wantOK: true, wantNum: 181, wantLabel: "Chapter 181",
},
{
name: "asura with an unparseable series url",
site: "asura", seriesURL: "https://asurascans.com/", body: asuraSeriesFixture,
wantOK: false,
},
{
name: "demonic takes the max across raw and escaped ampersands",
site: "demonic", seriesURL: demonicURL, body: demonicSeriesFixture,
wantOK: true, wantNum: 296, wantLabel: "Chapter 296",
},
{
name: "demonic keeps decimal chapters parseable",
site: "demonic", seriesURL: demonicURL,
body: `Chapter 0.5`,
wantOK: true, wantNum: 0.5, wantLabel: "Chapter 0.5",
},
{
name: "empty body",
site: "asura", seriesURL: asuraURL, body: "",
wantOK: false,
},
{
name: "cloudflare challenge page",
site: "asura", seriesURL: asuraURL, body: challengeFixture,
wantOK: false,
},
{
name: "demonic markup handed to the asura rule",
site: "asura", seriesURL: asuraURL, body: demonicSeriesFixture,
wantOK: false,
},
{
name: "unknown site",
site: "mangadex", seriesURL: "https://example.com/x", body: asuraSeriesFixture,
wantOK: false,
},
{
name: "comix reads latestChapterUrl, scoped to this series",
site: "comix",
seriesURL: "https://comix.to/title/n8we-dungeons-and-crayons",
body: comixSeriesFixture,
wantOK: true, wantNum: 80, wantLabel: "Chapter 80",
},
{
name: "comix yields nothing on a challenge page",
site: "comix",
seriesURL: "https://comix.to/title/n8we-dungeons-and-crayons",
body: challengeFixture,
wantOK: false,
},
{
name: "kagane takes the max chapter_no from API json",
site: "kagane",
seriesURL: "https://kagane.to/series/019f84bc-9ba0-7ed9-86f5-8b905ec7c28b",
body: kaganeAPIFixture,
wantOK: true, wantNum: 41, wantLabel: "Chapter 41",
},
{
name: "kagane yields nothing on a challenge page",
site: "kagane",
seriesURL: "https://kagane.to/series/019f84bc-9ba0-7ed9-86f5-8b905ec7c28b",
body: challengeFixture,
wantOK: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, ok := latestChapterFrom(tt.site, tt.seriesURL, tt.body)
if ok != tt.wantOK {
t.Fatalf("ok = %v, want %v (got %+v)", ok, tt.wantOK, got)
}
if !tt.wantOK {
return
}
if got.Num != tt.wantNum {
t.Errorf("Num = %v, want %v", got.Num, tt.wantNum)
}
if got.Label != tt.wantLabel {
t.Errorf("Label = %q, want %q", got.Label, tt.wantLabel)
}
})
}
}