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test(event-subscriber): ratchet projector mutation baseline to 100% (refs #7)

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Sharpen the projector tests so Stryker has no survivors (was 75%): assert a replayed
delivery never reaches the store (upsert count, not just row count), that two distinct
zaken get distinct rows (pins the idempotency key), that rebuild clears stale rows, and
a Theory over wrong kanaal/resource/actie combinations (pins the zaken/zaak/create guard).
Add the per-service Stryker config + solution; break threshold 90 (CLAUDE.md §5).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Niek Otten
2026-06-30 15:11:06 +02:00
parent 7ef63c7ae9
commit a111e5cc20
4 changed files with 59 additions and 18 deletions
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56
services/event-subscriber/EventSubscriber.Tests/NotificationProjectorTests.cs
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@@ -38,32 +38,52 @@ public sealed class NotificationProjectorTests
}
[Fact]
public async Task a_notification_on_another_kanaal_is_ignored()
{
await Projector().HandleAsync(new Notification("documenten", "enkelvoudiginformatieobject", "create", new Uri(ZaakUrl)));
Assert.Empty(await _store.AllAsync());
}
[Fact]
public async Task a_zaak_update_is_ignored_by_the_minimal_projection()
{
await Projector().HandleAsync(new Notification("zaken", "zaak", "update", new Uri(ZaakUrl)));
Assert.Empty(await _store.AllAsync());
}
[Fact]
public async Task rebuild_repopulates_the_projection_from_the_notification_log()
public async Task a_replayed_notification_never_reaches_the_projection_store()
{
var projector = Projector();
await projector.HandleAsync(ZaakCreated());
await _store.ClearAsync();
await projector.HandleAsync(ZaakCreated());
// The duplicate is dropped at the log, before the (idempotent) upsert — so the store
// is written exactly once. Row count alone can't see this; the upsert count can.
Assert.Equal(1, _store.UpsertCount);
}
[Fact]
public async Task two_different_zaken_each_get_their_own_row()
{
var projector = Projector();
await projector.HandleAsync(ZaakCreated());
await projector.HandleAsync(ZaakCreated(ZaakUrl[..^1] + "2")); // a distinct zaak url
Assert.Equal(2, (await _store.AllAsync()).Count);
}
[Theory]
[InlineData("documenten", "enkelvoudiginformatieobject", "create")] // wrong kanaal + resource
[InlineData("documenten", "zaak", "create")] // wrong kanaal only
[InlineData("zaken", "status", "create")] // wrong resource only
[InlineData("zaken", "zaak", "update")] // wrong actie
[InlineData("zaken", "zaak", "destroy")] // wrong actie
public async Task only_a_zaken_zaak_create_notification_is_projected(string kanaal, string resource, string actie)
{
await Projector().HandleAsync(new Notification(kanaal, resource, actie, new Uri(ZaakUrl)));
Assert.Empty(await _store.AllAsync());
}
[Fact]
public async Task rebuild_clears_stale_rows_and_repopulates_from_the_notification_log()
{
var projector = Projector();
await projector.HandleAsync(ZaakCreated());
// A stale row that is not backed by any logged notification must not survive a rebuild.
await _store.UpsertAsync(new RegisterEntry("stale-9999", RegistrationStatus.Ingediend));
await projector.RebuildAsync();
var entry = Assert.Single(await _store.AllAsync());
Assert.Equal("11111111-1111-1111-1111-111111111111", entry.Id);
Assert.Equal(RegistrationStatus.Ingediend, entry.Status);
}
}