sulthan
2b597921f4
A Poll finding a higher number now clears series.latest_raised_by: the value it stores is its own, so the next Poll must not credit that Reader with an agreement they did not earn, nor charge them for a retraction of a number they never reported. A PUT carrying no chapter is no Sighting and defers nothing. The ceiling now counts the Site's own rest rather than defaultRest. The userscripts PUT an unchanged read too - the case the whole mechanism exists for was the one they never sent. ADR-0011 carries its citations and states honestly when a Reader's marks take effect.
495 lines
19 KiB
Go
495 lines
19 KiB
Go
package latest
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import (
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"context"
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"crypto/sha256"
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"fmt"
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"log"
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"strings"
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"testing"
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"time"
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"bookmarkmanager/backend/internal/store"
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)
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// Sightings (issue #103) are specified at the Poller seam, with the store as
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// the way in: a Sighting is seeded the way handlers.Put performs one, a round
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// is run against the injected fetcher and a frozen clock, and the assertions
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// are the two observable facts — whether the Series was fetched, and what the
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// stored Latest Chapter is afterwards. Nothing here asserts counter arithmetic
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// through an internal call or reads how a deferral is represented in a row.
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const (
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sightingSlug = "chronicles-of-the-demon-faction-f886a8af"
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sightingKey = "asura:" + sightingSlug
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sightingURL = "https://asurascans.com/comics/" + sightingSlug
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)
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// sightingFixtureLatest is the newest chapter asuraSeriesFixture publishes.
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const sightingFixtureLatest = 181.0
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// sight performs one Sighting exactly as the JSON API does (handlers.Put):
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// RecordSighting against the row as stored, then the Upsert that stores the
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// reported value. The order is load-bearing — the raise comparison has nothing
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// to compare against once the Upsert has landed — and the bookmark's own fields
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// are carried over untouched, which is what a userscript PUT does when it
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// echoes back the row it cached.
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func sight(t *testing.T, s *store.Store, readerID int64, key string, num float64, at time.Time) {
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t.Helper()
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site, seriesID, ok := strings.Cut(key, ":")
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if !ok {
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t.Fatalf("key %q: no ':' separator", key)
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}
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b, found, err := s.Get(readerID, key)
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if err != nil || !found {
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t.Fatalf("sight %q: get: %v found=%v", key, err, found)
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}
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if err := s.RecordSighting(readerID, site, seriesID, &num, at.UnixMilli()); err != nil {
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t.Fatalf("sight %q: %v", key, err)
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}
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b.LatestChapter = fmt.Sprintf("Chapter %v", num)
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b.LatestChapterNum = &num
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b.UpdatedAt = at.UnixMilli()
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if _, err := s.Upsert(readerID, b); err != nil {
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t.Fatalf("sight %q: upsert: %v", key, err)
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}
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}
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// secondReader is another Reader on the same database. The owner seed is the
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// only reader-creation path in this package, so a second Open as a different
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// owner is how a test gets one (as TestRunOnceFetchesSharedSeriesOnce does).
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func secondReader(t *testing.T, dbURL string) *store.Store {
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t.Helper()
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other, err := store.Open(dbURL,
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store.Owner{DiscordID: "second-reader", TokenHash: sha256.Sum256([]byte("second-token-hash"))},
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t.TempDir(), testCoverBaseURL)
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if err != nil {
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t.Fatalf("Open second reader: %v", err)
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}
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t.Cleanup(func() { other.Close() })
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return other
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}
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func readLatestNum(t *testing.T, s *store.Store, readerID int64, key string) float64 {
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t.Helper()
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b, ok, err := s.Get(readerID, key)
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if err != nil || !ok {
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t.Fatalf("Get %q: %v ok=%v", key, err, ok)
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}
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if b.LatestChapterNum == nil {
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t.Fatalf("%q has no latest chapter", key)
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}
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return *b.LatestChapterNum
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}
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// A Series only one Reader bookmarks is the case where being wrong can hurt
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// nobody but the Reader who reported it, so their Sighting stands in for the
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// Poll and the round leaves the Series alone.
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func TestSightingOnSolitarySeriesDefersPoll(t *testing.T) {
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s, _ := newTestStore(t)
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now := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedForCheck(t, s, sightingKey, sightingURL, now.Add(-2*time.Hour).UnixMilli())
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sight(t, s, s.OwnerID(), sightingKey, sightingFixtureLatest, now.Add(-10*time.Minute))
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f := &fakeFetcher{body: asuraSeriesFixture, status: 200}
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newTestPoller(t, s, f, now).runOnce(context.Background())
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if got := f.callCount(); got != 0 {
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t.Fatalf("fetched %d times after a Sighting on a solitary Series, want 0", got)
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}
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}
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// On a shared Series the Sighting still writes the Latest Chapter for everyone,
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// but the Poll happens on schedule anyway — which is what corrects a wrong
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// value within the hour instead of letting it persist.
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func TestSightingOnSharedSeriesDoesNotDeferPoll(t *testing.T) {
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s, dbURL := newTestStore(t)
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now := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedForCheck(t, s, sightingKey, sightingURL, now.Add(-2*time.Hour).UnixMilli())
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other := secondReader(t, dbURL)
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if _, err := s.Upsert(other.OwnerID(), store.Bookmark{
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Key: sightingKey, Site: "asura", SeriesID: sightingSlug, UpdatedAt: 2000,
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}); err != nil {
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t.Fatalf("seed second reader: %v", err)
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}
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sight(t, s, s.OwnerID(), sightingKey, 200, now.Add(-10*time.Minute))
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// The Sighting updated the shared row immediately, before any Poll.
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if got := readLatestNum(t, s, s.OwnerID(), sightingKey); got != 200 {
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t.Fatalf("latest after the Sighting = %v, want 200", got)
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}
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f := &fakeFetcher{body: asuraSeriesFixture, status: 200}
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newTestPoller(t, s, f, now).runOnce(context.Background())
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if got := f.callCount(); got != 1 {
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t.Fatalf("fetched %d times after a Sighting on a shared Series, want 1", got)
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}
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if got := readLatestNum(t, s, s.OwnerID(), sightingKey); got != sightingFixtureLatest {
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t.Fatalf("latest after the Poll = %v, want the Site's own %v", got, sightingFixtureLatest)
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}
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}
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// Reporting a chapter is not reading one: a Sighting may move the Latest
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// Chapter and nothing else. Both the solitary and the shared case, because the
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// deferral branch must not be where this guarantee lives.
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func TestSightingLeavesProgressAndOrderingUntouched(t *testing.T) {
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for _, shared := range []bool{false, true} {
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name := "solitary"
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if shared {
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name = "shared"
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}
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t.Run(name, func(t *testing.T) {
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s, dbURL := newTestStore(t)
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read := 5.0
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if _, err := s.Upsert(s.OwnerID(), store.Bookmark{
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Key: sightingKey, Site: "asura", SeriesID: sightingSlug, SeriesURL: sightingURL,
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LastChapter: "Chapter 5", LastChapterNum: read,
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LastChapterURL: sightingURL + "/chapter/5", UpdatedAt: 1000,
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}); err != nil {
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t.Fatalf("seed: %v", err)
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}
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if shared {
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other := secondReader(t, dbURL)
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if _, err := s.Upsert(other.OwnerID(), store.Bookmark{
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Key: sightingKey, Site: "asura", SeriesID: sightingSlug, UpdatedAt: 2000,
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}); err != nil {
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t.Fatalf("seed second reader: %v", err)
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}
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}
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sight(t, s, s.OwnerID(), sightingKey, 200, time.UnixMilli(9_000_000))
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b, ok, err := s.Get(s.OwnerID(), sightingKey)
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if err != nil || !ok {
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t.Fatalf("Get: %v ok=%v", err, ok)
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}
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if b.LatestChapterNum == nil || *b.LatestChapterNum != 200 {
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t.Fatalf("LatestChapterNum = %v, want 200", b.LatestChapterNum)
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}
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if b.LastChapterNum != read {
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t.Fatalf("LastChapterNum = %v, want %v: a Sighting is not Progress", b.LastChapterNum, read)
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}
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if b.UpdatedAt != 1000 {
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t.Fatalf("updated_at moved to %d: a Sighting must not reorder the list", b.UpdatedAt)
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}
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})
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}
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}
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// The ceiling is what makes trusting a client report safe: however recently a
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// Series was sighted, one that has not been Polled in six hours is Polled.
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func TestSightingCeilingForcesPoll(t *testing.T) {
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s, _ := newTestStore(t)
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now := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedForCheck(t, s, sightingKey, sightingURL, now.Add(-7*time.Hour).UnixMilli())
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sight(t, s, s.OwnerID(), sightingKey, sightingFixtureLatest, now.Add(-time.Minute))
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f := &fakeFetcher{body: asuraSeriesFixture, status: 200}
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newTestPoller(t, s, f, now).runOnce(context.Background())
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if got := f.callCount(); got != 1 {
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t.Fatalf("fetched %d times past the %s ceiling, want 1", got, sightingCeilingRests*defaultRest)
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}
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}
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// Deferral is decided from live facts every round, so a Series that gains a
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// second Bookmark stops deferring at once — and one that loses it defers again.
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func TestDeferralFollowsTheBookmarkCount(t *testing.T) {
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s, dbURL := newTestStore(t)
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now := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedForCheck(t, s, sightingKey, sightingURL, now.Add(-2*time.Hour).UnixMilli())
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sight(t, s, s.OwnerID(), sightingKey, sightingFixtureLatest, now.Add(-10*time.Minute))
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f := &fakeFetcher{body: asuraSeriesFixture, status: 200}
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p := newTestPoller(t, s, f, now)
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p.runOnce(context.Background())
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if got := f.callCount(); got != 0 {
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t.Fatalf("solitary Series fetched %d times, want 0", got)
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}
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other := secondReader(t, dbURL)
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if _, err := s.Upsert(other.OwnerID(), store.Bookmark{
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Key: sightingKey, Site: "asura", SeriesID: sightingSlug, UpdatedAt: 2000,
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}); err != nil {
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t.Fatalf("seed second reader: %v", err)
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}
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p.runOnce(context.Background())
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if got := f.callCount(); got != 1 {
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t.Fatalf("shared Series fetched %d times, want 1", got)
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}
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// The Poll above consumed the rest, so move past it before asking again.
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if err := other.Delete(other.OwnerID(), sightingKey); err != nil {
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t.Fatalf("delete second bookmark: %v", err)
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}
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later := now.Add(2 * time.Hour)
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p.Now = func() time.Time { return later }
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sight(t, s, s.OwnerID(), sightingKey, sightingFixtureLatest, later.Add(-time.Minute))
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p.runOnce(context.Background())
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if got := f.callCount(); got != 1 {
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t.Fatalf("Series fetched %d times after returning to one Bookmark, want 1", got)
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}
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}
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// A Series nobody reports any more returns to the normal schedule on its own:
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// the Sighting's standing lasts one rest, not forever.
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func TestDeferralExpiresWithoutFurtherSightings(t *testing.T) {
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s, _ := newTestStore(t)
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now := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedForCheck(t, s, sightingKey, sightingURL, now.Add(-2*time.Hour).UnixMilli())
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sight(t, s, s.OwnerID(), sightingKey, sightingFixtureLatest, now.Add(-10*time.Minute))
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f := &fakeFetcher{body: asuraSeriesFixture, status: 200}
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p := newTestPoller(t, s, f, now)
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p.runOnce(context.Background())
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if got := f.callCount(); got != 0 {
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t.Fatalf("fetched %d times while the Sighting stood, want 0", got)
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}
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p.Now = func() time.Time { return now.Add(90 * time.Minute) }
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p.runOnce(context.Background())
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if got := f.callCount(); got != 1 {
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t.Fatalf("fetched %d times once the Sighting aged out, want 1", got)
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}
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}
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// demonicFixture publishes one chapter in demonicscans' live page shape, so a
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// test can make a Site publish an arbitrary number rather than the one the
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// captured fixture froze.
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func demonicFixture(num float64) string {
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return fmt.Sprintf(
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`<a href="/chaptered.php?manga=11799&chapter=%v" class="chplinks" title="Catastrophic Necromancer %v">Chapter %v</a>`,
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num, num, num)
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}
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const (
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demonicKey = "demonic:Catastrophic-Necromancer"
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demonicURL = "https://demonicscans.org/manga/Catastrophic-Necromancer"
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)
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// contradictOnce reports a chapter that does not exist and then runs the round
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// that catches it, returning when that round ran so a caller can chain the
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// next one. The wait is one rest and a minute: a Sighting stands in for exactly
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// one rest, so that is the first moment this solitary Series is Polled again.
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func contradictOnce(t *testing.T, s *store.Store, p *Poller, sightAt time.Time, real float64) time.Time {
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t.Helper()
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sight(t, s, s.OwnerID(), demonicKey, real+500, sightAt)
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at := sightAt.Add(defaultRest + time.Minute)
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p.Now = func() time.Time { return at }
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p.runOnce(context.Background())
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if got := readLatestNum(t, s, s.OwnerID(), demonicKey); got != real {
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t.Fatalf("latest after the Poll = %v, want the Site's own %v", got, real)
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}
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return at
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}
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func seedDemonic(t *testing.T, s *store.Store, checkedAt int64) {
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t.Helper()
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seedForCheck(t, s, demonicKey, demonicURL, checkedAt)
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}
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// A Poll finding a lower number than stored means the Sighting that raised it
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// was false. The Reader is named — not the Series flagged — and both numbers are
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// logged, because that is what tells a broken adapter from a deliberate lie.
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func TestPollContradictingASightingNamesTheReaderAndBothNumbers(t *testing.T) {
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s, _ := newTestStore(t)
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now := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedDemonic(t, s, now.Add(-2*time.Hour).UnixMilli())
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var logs strings.Builder
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prev := log.Writer()
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log.SetOutput(&logs)
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t.Cleanup(func() { log.SetOutput(prev) })
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f := &fakeFetcher{body: demonicFixture(296), status: 200}
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p := newTestPoller(t, s, f, now)
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contradictOnce(t, s, p, now, 296)
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got := logs.String()
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for _, want := range []string{
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fmt.Sprintf("reader %d", s.OwnerID()), "796", "296", demonicKey,
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} {
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if !strings.Contains(got, want) {
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t.Fatalf("contradiction log = %q, want it to name %q", got, want)
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}
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}
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}
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// Three contradictions cost the Reader the right to defer. Nothing here writes
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// a counter: the marks are earned through Polls, which is the only way
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// production produces them.
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func TestThreeContradictionsStopDeferral(t *testing.T) {
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s, _ := newTestStore(t)
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start := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedDemonic(t, s, start.Add(-2*time.Hour).UnixMilli())
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f := &fakeFetcher{body: demonicFixture(296), status: 200}
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p := newTestPoller(t, s, f, start)
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at := start
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for range store.SightingDisagreementLimit {
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at = contradictOnce(t, s, p, at.Add(time.Minute), 296)
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}
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fetchesSoFar := f.callCount()
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// The marked Reader sights the same solitary Series again. It still writes
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// the Latest Chapter — the penalty removes a privilege, it does not silence
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// anyone — but the Poll is no longer postponed: the round below runs while a
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// trusted Reader's Sighting would still be standing, and fetches anyway.
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sight(t, s, s.OwnerID(), demonicKey, 900, at.Add(31*time.Minute))
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if got := readLatestNum(t, s, s.OwnerID(), demonicKey); got != 900 {
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t.Fatalf("latest after a marked Reader's Sighting = %v, want 900", got)
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}
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p.Now = func() time.Time { return at.Add(defaultRest + time.Minute) }
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p.runOnce(context.Background())
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if got := f.callCount(); got != fetchesSoFar+1 {
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t.Fatalf("marked Reader's Sighting still deferred the Poll (fetches %d, want %d)",
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got, fetchesSoFar+1)
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}
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}
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// The owner's remedy for a mark a broken Site adapter produced restores the
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// privilege without a wait and without SQL.
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func TestClearingMarksRestoresDeferral(t *testing.T) {
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s, _ := newTestStore(t)
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start := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedDemonic(t, s, start.Add(-2*time.Hour).UnixMilli())
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f := &fakeFetcher{body: demonicFixture(296), status: 200}
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p := newTestPoller(t, s, f, start)
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at := start
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for range store.SightingDisagreementLimit {
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at = contradictOnce(t, s, p, at.Add(time.Minute), 296)
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}
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if err := s.ClearReaderMarks(s.OwnerID()); err != nil {
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t.Fatalf("ClearReaderMarks: %v", err)
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}
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fetchesSoFar := f.callCount()
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sight(t, s, s.OwnerID(), demonicKey, 900, at.Add(31*time.Minute))
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p.Now = func() time.Time { return at.Add(defaultRest + time.Minute) }
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p.runOnce(context.Background())
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if got := f.callCount(); got != fetchesSoFar {
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t.Fatalf("fetched %d times after the marks were cleared, want %d: deferral must resume",
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got, fetchesSoFar)
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}
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}
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// Recovery is automatic but expensive: twenty Polls that each confirm a
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// Sighting of this Reader's clear the marks. Each round needs a new chapter,
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// because only a report that raises the stored number is attributed and so only
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// that one can be confirmed.
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func TestTwentyAgreementsClearTheMarks(t *testing.T) {
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s, _ := newTestStore(t)
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start := time.UnixMilli(20 * time.Hour.Milliseconds())
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seedDemonic(t, s, start.Add(-2*time.Hour).UnixMilli())
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f := &fakeFetcher{body: demonicFixture(296), status: 200}
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p := newTestPoller(t, s, f, start)
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at := start
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for range store.SightingDisagreementLimit {
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at = contradictOnce(t, s, p, at.Add(time.Minute), 296)
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}
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chapter := 296.0
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for range store.SightingAgreementsToClear {
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chapter++
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sight(t, s, s.OwnerID(), demonicKey, chapter, at.Add(time.Minute))
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f.body = demonicFixture(chapter) // the Site publishes what was reported
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at = at.Add(defaultRest + time.Minute)
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p.Now = func() time.Time { return at }
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p.runOnce(context.Background())
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}
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fetchesSoFar := f.callCount()
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chapter++
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sight(t, s, s.OwnerID(), demonicKey, chapter, at.Add(31*time.Minute))
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p.Now = func() time.Time { return at.Add(defaultRest + time.Minute) }
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p.runOnce(context.Background())
|
|
if got := f.callCount(); got != fetchesSoFar {
|
|
t.Fatalf("fetched %d times after %d confirmations, want %d: the marks must be forgiven",
|
|
got, store.SightingAgreementsToClear, fetchesSoFar)
|
|
}
|
|
}
|
|
|
|
// A Poll finding a higher number is the Site publishing since the Sighting and
|
|
// means nothing about the Reader — no mark, and no credit either.
|
|
func TestPollFindingHigherNumberIsNotAContradiction(t *testing.T) {
|
|
s, _ := newTestStore(t)
|
|
now := time.UnixMilli(20 * time.Hour.Milliseconds())
|
|
seedDemonic(t, s, now.Add(-2*time.Hour).UnixMilli())
|
|
// Reported truthfully, then the Site published one more.
|
|
sight(t, s, s.OwnerID(), demonicKey, 295, now.Add(-10*time.Minute))
|
|
|
|
f := &fakeFetcher{body: demonicFixture(296), status: 200}
|
|
p := newTestPoller(t, s, f, now)
|
|
// One rest on, the Sighting has lapsed and the Poll happens.
|
|
p.Now = func() time.Time { return now.Add(7 * time.Hour) }
|
|
p.runOnce(context.Background())
|
|
if got := f.callCount(); got != 1 {
|
|
t.Fatalf("fetched %d times past the ceiling, want 1", got)
|
|
}
|
|
|
|
// Unmarked, so a fresh Sighting still defers.
|
|
at := now.Add(9 * time.Hour)
|
|
sight(t, s, s.OwnerID(), demonicKey, 296, at.Add(-time.Minute))
|
|
p.Now = func() time.Time { return at }
|
|
p.runOnce(context.Background())
|
|
if got := f.callCount(); got != 1 {
|
|
t.Fatalf("a Reader whose report the Site overtook lost the right to defer (fetches %d, want 1)", got)
|
|
}
|
|
}
|
|
|
|
// A Poll that overtakes a Sighting takes ownership of the row: the value stored
|
|
// afterwards is the Poll's own, so a later retraction is not the Reader's fault
|
|
// and must not be charged to them.
|
|
func TestAttributionDoesNotSurviveAPollThatOvertookIt(t *testing.T) {
|
|
s, _ := newTestStore(t)
|
|
now := time.UnixMilli(20 * time.Hour.Milliseconds())
|
|
seedDemonic(t, s, now.Add(-2*time.Hour).UnixMilli())
|
|
sight(t, s, s.OwnerID(), demonicKey, 295, now.Add(-10*time.Minute))
|
|
|
|
f := &fakeFetcher{body: demonicFixture(296), status: 200}
|
|
p := newTestPoller(t, s, f, now)
|
|
at := now.Add(defaultRest + time.Minute)
|
|
p.Now = func() time.Time { return at }
|
|
p.runOnce(context.Background())
|
|
if got := readLatestNum(t, s, s.OwnerID(), demonicKey); got != 296 {
|
|
t.Fatalf("latest after the Poll = %v, want the Site's own 296", got)
|
|
}
|
|
|
|
var logs strings.Builder
|
|
prev := log.Writer()
|
|
log.SetOutput(&logs)
|
|
t.Cleanup(func() { log.SetOutput(prev) })
|
|
|
|
f.body = demonicFixture(290) // the Site retracts what only the Poll wrote
|
|
p.Now = func() time.Time { return at.Add(defaultRest + time.Minute) }
|
|
p.runOnce(context.Background())
|
|
if strings.Contains(logs.String(), "sighting contradicted") {
|
|
t.Fatalf("a retraction of the Poll's own value was charged to a Reader: %s", logs.String())
|
|
}
|
|
}
|
|
|
|
// A PUT with no Latest Chapter in it — a favourite toggle, progress written
|
|
// from a chapter page — is nobody looking at the Series page, so it buys no
|
|
// deferral. Otherwise a client could suppress a Series' Polls while reporting
|
|
// nothing, and with nothing reported there would be nothing to judge.
|
|
func TestPutWithoutALatestChapterDoesNotDefer(t *testing.T) {
|
|
s, _ := newTestStore(t)
|
|
now := time.UnixMilli(20 * time.Hour.Milliseconds())
|
|
seedDemonic(t, s, now.Add(-2*time.Hour).UnixMilli())
|
|
// The handler's own call, with the field the client omitted.
|
|
if err := s.RecordSighting(s.OwnerID(), "demonic", "Catastrophic-Necromancer",
|
|
nil, now.Add(-time.Minute).UnixMilli()); err != nil {
|
|
t.Fatalf("RecordSighting: %v", err)
|
|
}
|
|
|
|
f := &fakeFetcher{body: demonicFixture(296), status: 200}
|
|
p := newTestPoller(t, s, f, now)
|
|
p.runOnce(context.Background())
|
|
if got := f.callCount(); got != 1 {
|
|
t.Fatalf("fetched %d times after a PUT carrying no chapter, want 1", got)
|
|
}
|
|
}
|