CosmicClash/server/store/candidate_projection_test.go

package store

import (
	"context"
	"testing"
	"time"

	"github.com/alicebob/miniredis/v2"
	"github.com/cosmic-clash/cosmic-clash/server/domain"
	"github.com/redis/go-redis/v9"
)

func TestCandidateProjectionRepairsPartialRedisStateFromDurableSource(t *testing.T) {
	mini, err := miniredis.Run()
	if err != nil {
		t.Fatal(err)
	}
	defer mini.Close()
	client := redis.NewClient(&redis.Options{Addr: mini.Addr()})
	defer client.Close()
	now := time.Unix(1000, 0).UTC()
	candidate := domain.Candidate{TicketID: "repair-ticket", PlayerID: "repair-player", EnqueuedAt: now}
	index := RedisCandidateIndex{Client: client, Prefix: "repair", TTL: time.Minute}
	_, orderKey := index.keys()
	if err := client.ZAdd(context.Background(), orderKey, redis.Z{Score: float64(now.UnixNano()), Member: candidate.TicketID}).Err(); err != nil {
		t.Fatal(err)
	}
	projection := CandidateProjection{Index: index, Source: func(context.Context, time.Time) ([]domain.Candidate, error) {
		return []domain.Candidate{candidate}, nil
	}}
	got, err := projection.Snapshot(context.Background(), now)
	if err != nil {
		t.Fatal(err)
	}
	if len(got) != 1 || got[0].TicketID != candidate.TicketID {
		t.Fatalf("repaired projection = %+v", got)
	}
}

func TestCandidateProjectionDoesNotReturnCacheWhenRepairSourceFails(t *testing.T) {
	index := RedisCandidateIndex{TTL: time.Minute}
	projection := CandidateProjection{Index: index, Source: func(context.Context, time.Time) ([]domain.Candidate, error) {
		return nil, context.DeadlineExceeded
	}}
	if _, err := projection.Snapshot(context.Background(), time.Unix(1000, 0)); err == nil {
		t.Fatal("cache projection succeeded without a usable Redis/index source")
	}
}

func TestCandidateProjectionRepairsEmptyIndexFromDurableSource(t *testing.T) {
	mini, err := miniredis.Run()
	if err != nil {
		t.Fatal(err)
	}
	defer mini.Close()
	client := redis.NewClient(&redis.Options{Addr: mini.Addr()})
	defer client.Close()
	now := time.Unix(1000, 0).UTC()
	candidate := domain.Candidate{TicketID: "miss-ticket", PlayerID: "miss-player", EnqueuedAt: now}
	projection := CandidateProjection{
		Index: RedisCandidateIndex{Client: client, Prefix: "miss", TTL: time.Minute},
		Source: func(context.Context, time.Time) ([]domain.Candidate, error) {
			return []domain.Candidate{candidate}, nil
		},
	}
	got, err := projection.Snapshot(context.Background(), now)
	if err != nil {
		t.Fatal(err)
	}
	if len(got) != 1 || got[0].TicketID != candidate.TicketID {
		t.Fatalf("empty-index repair = %+v", got)
	}
}