fix(guild): single-pass bucket filter in GuildRepository.SearchAsync
Replace double-correlated COUNT subqueries in the member-bucket switch with a project-filter-project pattern that computes the count once per row. Add SearchAsync_bucket_2_matches_guilds_with_11_to_25_members to cover the previously untested medium-bucket range. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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@@ -53,18 +53,18 @@ public sealed class GuildRepository : IGuildRepository
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if (joinCondition != 0)
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q = q.Where(g => (int)g.JoinCondition == joinCondition);
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if (memberBucket != 0)
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if (memberBucket is 1 or 2 or 3)
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{
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q = memberBucket switch
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var (lo, hi) = memberBucket switch
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{
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1 => q.Where(g => _db.GuildMembers.Count(m => m.GuildId == g.GuildId) >= 1
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&& _db.GuildMembers.Count(m => m.GuildId == g.GuildId) <= 10),
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2 => q.Where(g => _db.GuildMembers.Count(m => m.GuildId == g.GuildId) >= 11
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&& _db.GuildMembers.Count(m => m.GuildId == g.GuildId) <= 25),
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3 => q.Where(g => _db.GuildMembers.Count(m => m.GuildId == g.GuildId) >= 26
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&& _db.GuildMembers.Count(m => m.GuildId == g.GuildId) <= maxMemberCap),
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_ => q,
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1 => (1, 10),
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2 => (11, 25),
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_ => (26, maxMemberCap),
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};
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q = q
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.Select(g => new { Guild = g, MemberCount = _db.GuildMembers.Count(m => m.GuildId == g.GuildId) })
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.Where(x => x.MemberCount >= lo && x.MemberCount <= hi)
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.Select(x => x.Guild);
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}
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return await q.Take(resultCap).ToListAsync(ct);
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@@ -68,4 +68,29 @@ public class GuildRepositoryTests
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var small = await repo.SearchAsync("", 0, 0, 1, 30, 50);
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Assert.That(small.Select(x => x.GuildId), Has.No.Member(bigId));
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}
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[Test]
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public async Task SearchAsync_bucket_2_matches_guilds_with_11_to_25_members()
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{
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await using var db = Db();
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var repo = new GuildRepository(db);
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// Guild with 15 members — should appear in bucket 2
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var midId = 10;
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await repo.AddAsync(new GuildEntity { GuildId = midId, Name = "Mid", Activity = GuildActivity.All, JoinCondition = GuildJoinCondition.Free, CreatedAt = DateTime.UtcNow });
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for (int i = 0; i < 15; i++)
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db.GuildMembers.Add(new GuildMember { GuildId = midId, ViewerId = 2000 + i, Role = GuildRole.Regular, JoinedAt = DateTime.UtcNow });
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// Guild with 5 members — should appear in bucket 1 only
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var smallId = 11;
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await repo.AddAsync(new GuildEntity { GuildId = smallId, Name = "Small", Activity = GuildActivity.All, JoinCondition = GuildJoinCondition.Free, CreatedAt = DateTime.UtcNow });
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for (int i = 0; i < 5; i++)
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db.GuildMembers.Add(new GuildMember { GuildId = smallId, ViewerId = 3000 + i, Role = GuildRole.Regular, JoinedAt = DateTime.UtcNow });
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await db.SaveChangesAsync();
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var bucket2 = await repo.SearchAsync("", 0, 0, 2, 30, 50);
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Assert.That(bucket2.Select(x => x.GuildId), Has.Member(midId), "15-member guild should be in bucket 2");
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Assert.That(bucket2.Select(x => x.GuildId), Has.No.Member(smallId), "5-member guild must not appear in bucket 2");
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}
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}
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