test(galaxyrepo): projector + cache tests; dispose semaphores; pack 0.1.0

2026-06-23 20:34:32 -04:00
parent a30f8551e9
commit 2c6c764d3c
7 changed files with 935 additions and 4 deletions
@@ -0,0 +1,134 @@
+using System.Runtime.CompilerServices;
+using ZB.MOM.WW.GalaxyRepository;
+
+namespace ZB.MOM.WW.GalaxyRepository.Tests;
+
+/// <summary>
+///     In-memory <see cref="IGalaxyRepository"/> returning canned rowsets. Counts the heavy
+///     hierarchy/attribute reads so tests can assert deploy-gated skips, and can be flipped to
+///     throw so the failure path is exercisable.
+/// </summary>
+internal sealed class FakeGalaxyRepository : IGalaxyRepository
+{
+    private readonly IReadOnlyList<GalaxyHierarchyRow> _hierarchy;
+    private readonly IReadOnlyList<GalaxyAttributeRow> _attributes;
+
+    public FakeGalaxyRepository(
+        IReadOnlyList<GalaxyHierarchyRow> hierarchy,
+        IReadOnlyList<GalaxyAttributeRow> attributes,
+        DateTime? deployTime)
+    {
+        _hierarchy = hierarchy;
+        _attributes = attributes;
+        DeployTime = deployTime;
+    }
+
+    /// <summary>The deploy time returned by <see cref="GetLastDeployTimeAsync"/>; mutate to simulate a redeploy.</summary>
+    public DateTime? DeployTime { get; set; }
+
+    /// <summary>When set, every query throws this exception (simulates an unreachable database).</summary>
+    public Exception? ThrowOnQuery { get; set; }
+
+    public int HierarchyReadCount { get; private set; }
+
+    public int AttributeReadCount { get; private set; }
+
+    public Task<bool> TestConnectionAsync(CancellationToken ct = default) =>
+        ThrowOnQuery is null ? Task.FromResult(true) : throw ThrowOnQuery;
+
+    public Task<DateTime?> GetLastDeployTimeAsync(CancellationToken ct = default)
+    {
+        if (ThrowOnQuery is not null)
+        {
+            throw ThrowOnQuery;
+        }
+
+        return Task.FromResult(DeployTime);
+    }
+
+    public Task<List<GalaxyHierarchyRow>> GetHierarchyAsync(CancellationToken ct = default)
+    {
+        if (ThrowOnQuery is not null)
+        {
+            throw ThrowOnQuery;
+        }
+
+        HierarchyReadCount++;
+        return Task.FromResult(_hierarchy.ToList());
+    }
+
+    public Task<List<GalaxyAttributeRow>> GetAttributesAsync(CancellationToken ct = default)
+    {
+        if (ThrowOnQuery is not null)
+        {
+            throw ThrowOnQuery;
+        }
+
+        AttributeReadCount++;
+        return Task.FromResult(_attributes.ToList());
+    }
+}
+
+/// <summary>Records published deploy events so tests can assert publication.</summary>
+internal sealed class RecordingDeployNotifier : IGalaxyDeployNotifier
+{
+    public List<GalaxyDeployEventInfo> Published { get; } = [];
+
+    public GalaxyDeployEventInfo? Latest { get; private set; }
+
+    public void Publish(GalaxyDeployEventInfo info)
+    {
+        Published.Add(info);
+        Latest = info;
+    }
+
+    public async IAsyncEnumerable<GalaxyDeployEventInfo> SubscribeAsync(
+        [EnumeratorCancellation] CancellationToken cancellationToken)
+    {
+        if (Latest is { } latest)
+        {
+            yield return latest;
+        }
+
+        await Task.CompletedTask.ConfigureAwait(false);
+    }
+}
+
+/// <summary>
+///     In-memory <see cref="IGalaxyHierarchySnapshotStore"/>. Pre-seed <see cref="Snapshot"/>
+///     to exercise the restore path; reads <see cref="SaveAsync"/> back to assert persistence.
+/// </summary>
+internal sealed class FakeSnapshotStore : IGalaxyHierarchySnapshotStore
+{
+    public GalaxyHierarchySnapshot? Snapshot { get; set; }
+
+    public int SaveCount { get; private set; }
+
+    public int LoadCount { get; private set; }
+
+    public Task SaveAsync(GalaxyHierarchySnapshot snapshot, CancellationToken cancellationToken)
+    {
+        SaveCount++;
+        Snapshot = snapshot;
+        return Task.CompletedTask;
+    }
+
+    public Task<GalaxyHierarchySnapshot?> TryLoadAsync(CancellationToken cancellationToken)
+    {
+        LoadCount++;
+        return Task.FromResult(Snapshot);
+    }
+}
+
+/// <summary>
+///     A <see cref="TimeProvider"/> whose UTC clock is fixed (and advanceable) so the cache's
+///     staleness projection (which fires after a 5-minute threshold) is deterministic.
+/// </summary>
+internal sealed class StubTimeProvider(DateTimeOffset start) : TimeProvider
+{
+    private DateTimeOffset _now = start;
+
+    public override DateTimeOffset GetUtcNow() => _now;
+
+    public void Advance(TimeSpan delta) => _now += delta;
+}