Перевести FakeFileStorage на NSubstitute

Хелпер Support/TestFileStorage: словари объектов/типов + журнал удалений,
подставка читает состояние на момент вызова (позиция потока при Put — по
контракту порта). Потребители (9 файлов) перетипизированы на .Storage,
фейк удалён, тесты 1340 зелёные.

src/core/tests/Deal.Tests.Unit/Contracts/CardsServiceTests.cs

@@ -1,4 +1,5 @@
 using Deal.Contracts.Integrations.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Modules.Cards.Application.Sources;
 using Deal.Modules.Kanban.Application.Models;
 using Deal.Modules.Kanban.Application.Services;
@@ -715,7 +716,7 @@ public sealed class CardsServiceTests
         var store = new FakeKanjStore();
         var settings = new FakeSettingsStore();
         var ml = new FakeMlClient();
-        return (new CardsService(store, settings, ml, new FakeFileStorage()), store, settings, ml);
+        return (new CardsService(store, settings, ml, new TestFileStorage().Storage), store, settings, ml);
     }
 
     // Доска с правилами (ContainerRulesDto) либо без них.

src/core/tests/Deal.Tests.Unit/Infrastructure/CardMoverTests.cs

@@ -3,6 +3,7 @@ using Deal.Modules.Cards.Application.Dtos;
 using Deal.Modules.Cards.Application.Models;
 using Deal.Modules.Cards.Application.Sources;
 using Deal.Modules.Kanban.Application.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Modules.Kanban.Application.Services;
 using Deal.Tests.Unit.Contracts;
 using Deal.Tests.Unit.Modules.Cards;
@@ -81,7 +82,7 @@ public sealed class CardMoverTests
     private static (CardMover Mover, FakeKanjStore Store) Create()
     {
         var store = new FakeKanjStore();
-        var cardsService = new CardsService(store, new FakeSettingsStore(), new FakeMlClient(), new FakeFileStorage());
+        var cardsService = new CardsService(store, new FakeSettingsStore(), new FakeMlClient(), new TestFileStorage().Storage);
         return (new CardMover(cardsService), store);
     }
 }

src/core/tests/Deal.Tests.Unit/Modules/Kanban/CardsServiceRemindersTests.cs

@@ -1,4 +1,5 @@
 using Deal.Modules.Kanban.Application.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Modules.Kanban.Application.Services;
 using Deal.Modules.Settings.Application.Models;
 using Deal.Tests.Unit.Contracts;
@@ -194,7 +195,7 @@ public sealed class CardsServiceRemindersTests
             settings.Preload(SettingsKeys.RemindersEnabled, "false");
         }
 
-        return (new CardsService(store, settings, new FakeMlClient(), new FakeFileStorage()), store, settings);
+        return (new CardsService(store, settings, new FakeMlClient(), new TestFileStorage().Storage), store, settings);
     }
 
     // Текущее время в epoch-мс (UTC) — для посева напоминаний в прошлом/будущем.

src/core/tests/Deal.Tests.Unit/Modules/Kanban/MlReviewServiceTests.cs

@@ -25,7 +25,7 @@ public sealed class MlReviewServiceTests
         out CardsService cards)
     {
         var settings = new FakeSettingsStore();
-        cards = new CardsService(kanj, settings, ml, new FakeFileStorage());
+        cards = new CardsService(kanj, settings, ml, new TestFileStorage().Storage);
         var processing = new PipelineProcessingService(pipeline, ml, new PipelineIngestService(pipeline));
         return new MlReviewService(pipeline, kanj, cards, processing, ml);
     }

src/core/tests/Deal.Tests.Unit/Support/AdminTickOrchestratorTests.cs

@@ -220,7 +220,7 @@ public sealed class AdminTickOrchestratorTests
         var toastPublisher = new StorageToastPublisher(broker);
         var pumpGate = new PipelinePumpGate();
         FakeKanjStore reminderStore = withThrowingReminderCheck ? new ThrowingDueKanjStore() : kanjStore;
-        var cardsService = new CardsService(reminderStore, settings, mlClient, new FakeFileStorage());
+        var cardsService = new CardsService(reminderStore, settings, mlClient, new TestFileStorage().Storage);
         var orchestrator = new AdminTickOrchestrator(
             tickService, processing, worker, cardsService, toastPublisher, broker, pumpGate,
             NullLogger<AdminTickOrchestrator>.Instance);

src/core/tests/Deal.Tests.Unit/Support/CardReclassifierTests.cs

@@ -37,7 +37,7 @@ public sealed class CardReclassifierTests
         var aiClassifier = new TestAiClassifier();
         var fieldsParser = new LocalFieldsParser(settings);
         var composer = new CardComposer(store, settings);
-        var cardsService = new CardsService(store, settings, mlClient, new FakeFileStorage());
+        var cardsService = new CardsService(store, settings, mlClient, new TestFileStorage().Storage);
         var gate = new ReclassifyGate();
         var reclassifier = new CardReclassifier(
             store, settings, aiClassifier.Classifier, fieldsParser, composer, cardsService, mlClient, gate);

src/core/tests/Deal.Tests.Unit/Support/CardsServiceFilesTests.cs

@@ -16,7 +16,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Add_ImageMime_DetectsKindByMimeWritesObjectAndMeta()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         store.SeedCard(Card("c_1", updatedAtMs: 1));
         byte[] content = Encoding.UTF8.GetBytes("данные-картинки");
         using MemoryStream stream = new(content);
@@ -57,7 +57,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Add_TwoFiles_AppendsPreservingOrderAndBothObjects()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         store.SeedCard(Card("c_1"));
 
         CardFileDto? first = await service.AddFileAsync(
@@ -76,7 +76,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Add_CardMissing_ReturnsNullAndDoesNotWriteObject()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
 
         CardFileDto? entry = await service.AddFileAsync(
             "c_missing", "photo.png", "image/png", new MemoryStream("x"u8.ToArray()), 1, CancellationToken.None);
@@ -105,7 +105,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Add_FileNameWithPathAndQuoteChars_SanitizesObjectKeyButKeepsMetaName()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         store.SeedCard(Card("c_1"));
         string rawName = "..\\файл\"отчёта v2.pdf";
 
@@ -123,7 +123,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Add_StreamPositionNotZero_StoresWholeContent()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         store.SeedCard(Card("c_1"));
         byte[] content = Encoding.UTF8.GetBytes("полное-содержимое-файла");
         using MemoryStream stream = new(content) { Position = 5 }; // эндпоинт мог прочитать поток раньше
@@ -177,12 +177,12 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Remove_Existing_DeletesObjectRemovesMetaAndReturnsCard()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         var first = new CardFileDto("pf_1", "tz.pdf", 100, "document", "Документ", "projects/c_1/1710000000001_tz.pdf");
         var second = new CardFileDto("pf_2", "photo.png", 200, "image", "Изображение", "projects/c_1/1710000000002_photo.png");
         store.SeedCard(Card("c_1", updatedAtMs: 1) with { Files = new[] { first, second } });
-        await storage.PutAsync(first.ObjectKey, new MemoryStream("t"u8.ToArray()), "application/pdf", CancellationToken.None);
+        await storage.Storage.PutAsync(first.ObjectKey, new MemoryStream("t"u8.ToArray()), "application/pdf", CancellationToken.None);
-        await storage.PutAsync(second.ObjectKey, new MemoryStream("p"u8.ToArray()), "image/png", CancellationToken.None);
+        await storage.Storage.PutAsync(second.ObjectKey, new MemoryStream("p"u8.ToArray()), "image/png", CancellationToken.None);
 
         CardDto? card = await service.RemoveFileAsync("c_1", "pf_1", CancellationToken.None);
 
@@ -199,7 +199,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Remove_UnknownFileId_ReturnsCardUnchangedWithoutStorageDelete()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         var file = new CardFileDto("pf_1", "tz.pdf", 100, "document", "Документ", "projects/c_1/1710000000001_tz.pdf");
         store.SeedCard(Card("c_1") with { Files = new[] { file } });
 
@@ -214,7 +214,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Remove_EntryWithEmptyObjectKey_SkipsStorageDelete()
     {
-        (CardsService service, FakeKanjStore store, FakeFileStorage storage) = Create();
+        (CardsService service, FakeKanjStore store, TestFileStorage storage) = Create();
         store.SeedCard(Card("c_1")
             with { Files = new[] { new CardFileDto("pf_mock", "meta-only.pdf", 10, "document", "Документ", ObjectKey: string.Empty) } });
 
@@ -228,7 +228,7 @@ public sealed class CardsServiceFilesTests
     [Fact]
     public async Task Remove_CardMissing_ReturnsNullWithoutStorageDelete()
     {
-        (CardsService service, _, FakeFileStorage storage) = Create();
+        (CardsService service, _, TestFileStorage storage) = Create();
 
         CardDto? card = await service.RemoveFileAsync("c_missing", "pf_1", CancellationToken.None);
 
@@ -238,11 +238,11 @@ public sealed class CardsServiceFilesTests
 
     // ─── Хелперы ──────────────────────────────────────────────────────────
 
-    private static (CardsService Service, FakeKanjStore Store, FakeFileStorage Storage) Create()
+    private static (CardsService Service, FakeKanjStore Store, TestFileStorage Storage) Create()
     {
         var store = new FakeKanjStore();
-        var storage = new FakeFileStorage();
+        var storage = new TestFileStorage();
-        return (new CardsService(store, new FakeSettingsStore(), new FakeMlClient(), storage), store, storage);
+        return (new CardsService(store, new FakeSettingsStore(), new FakeMlClient(), storage.Storage), store, storage);
     }
 
     // Карточка с полями по умолчанию (planned, CreatedAtMs=1, UpdatedAtMs=1; Files пуст).

src/core/tests/Deal.Tests.Unit/Support/CardsServiceSelectedTests.cs

@@ -536,7 +536,7 @@ public sealed class CardsServiceSelectedTests
         var store = new FakeKanjStore();
         var settings = new FakeSettingsStore();
         var ml = new FakeMlClient();
-        return (new CardsService(store, settings, ml, new FakeFileStorage()), store, settings, ml);
+        return (new CardsService(store, settings, ml, new TestFileStorage().Storage), store, settings, ml);
     }
 
     // Тело PATCH из пар «ключ → значение» (presence = наличие пары; null — явный JSON-null).

src/core/tests/Deal.Tests.Unit/Support/StorageTickSchedulerTests.cs

@@ -323,7 +323,7 @@ public sealed class StorageTickSchedulerTests
         services.AddScoped<ISettingsStore>(provider => settingsByTenant[TenantOf(provider)]);
         services.AddScoped<IPipelineStore>(provider => pipelineStoresByTenant[TenantOf(provider)]);
         services.AddSingleton<IMlClient>(new FakeMlClient());
-        services.AddSingleton<IFileStorage>(new FakeFileStorage());
+        services.AddSingleton<IFileStorage>(new TestFileStorage().Storage);
         services.AddScoped<PipelineIngestService>();
         services.AddScoped<PipelineProcessingService>();
         services.AddScoped<StorageTickService>();

src/core/tests/Deal.Tests.Unit/Support/TestFileStorage.cs

@@ -0,0 +1,107 @@
+using Deal.Contracts.Integrations.Abstractions;
+using Deal.Contracts.Integrations.Models;
+using NSubstitute;
+
+namespace Deal.Tests.Unit.Support;
+
+/// <summary>
+/// Подставка <see cref="IFileStorage"/> на словарях: сервисы получают NSubstitute-подставку
+/// (<see cref="Storage"/>), тесты сеют/проверяют объекты через <see cref="PutObject"/>,
+/// <see cref="ContentOf"/>, <see cref="StoredObjectKeys"/> и <see cref="DeletedKeys"/>.
+/// </summary>
+public sealed class TestFileStorage
+{
+    private readonly Dictionary<string, byte[]> _objects = new(StringComparer.Ordinal);
+    private readonly Dictionary<string, string> _contentTypes = new(StringComparer.Ordinal);
+    private readonly List<string> _deletedKeys = [];
+
+    /// <summary>
+    /// Подставка порта файлового хранилища (создаётся в конструкторе).
+    /// </summary>
+    public IFileStorage Storage { get; }
+
+    /// <summary>
+    /// objectKey всех объектов, сохранённых на данный момент
+    /// </summary>
+    public IReadOnlyList<string> StoredObjectKeys => _objects.Keys.ToList();
+
+    /// <summary>
+    /// objectKey всех удалений в порядке вызовов DeleteAsync
+    /// </summary>
+    public IReadOnlyList<string> DeletedKeys => _deletedKeys.ToList();
+
+    /// <summary>
+    /// Создаёт подставку с пустым хранилищем.
+    /// </summary>
+    public TestFileStorage()
+    {
+        Storage = Substitute.For<IFileStorage>();
+        Storage.PutAsync(Arg.Any<string>(), Arg.Any<Stream>(), Arg.Any<string>(), Arg.Any<CancellationToken>())
+            .Returns(ci => Put(ci.ArgAt<string>(0), ci.ArgAt<Stream>(1), ci.ArgAt<string>(2)));
+        Storage.GetAsync(Arg.Any<string>(), Arg.Any<CancellationToken>())
+            .Returns(ci => Get(ci.ArgAt<string>(0)));
+        Storage.StatAsync(Arg.Any<string>(), Arg.Any<CancellationToken>())
+            .Returns(ci => Stat(ci.ArgAt<string>(0)));
+        Storage.When(s => s.DeleteAsync(Arg.Any<string>(), Arg.Any<CancellationToken>()))
+            .Do(ci => Delete(ci.ArgAt<string>(0)));
+    }
+
+    /// <summary>
+    /// Кладёт объект напрямую, минуя порт
+    /// </summary>
+    /// <param name="objectKey">Ключ объекта (opaque).</param>
+    /// <param name="content">Содержимое.</param>
+    /// <param name="contentType">MIME-тип.</param>
+    public void PutObject(string objectKey, byte[] content, string contentType = "application/octet-stream")
+    {
+        _objects[objectKey] = content;
+        _contentTypes[objectKey] = contentType;
+    }
+
+    /// <summary>
+    /// Содержимое сохранённого объекта по ключу либо null — объекта нет
+    /// </summary>
+    /// <param name="objectKey">Ключ объекта (opaque).</param>
+    public byte[]? ContentOf(string objectKey)
+    {
+        return _objects.TryGetValue(objectKey, out byte[]? content) ? content : null;
+    }
+
+    private string Put(string objectKey, Stream content, string contentType)
+    {
+        ArgumentNullException.ThrowIfNull(content);
+
+        using MemoryStream buffer = new();
+        if (content.CanSeek && content.Position != 0)
+        {
+            content.Position = 0; // контракт порта: Put читает всё содержимое с позиции 0 (Ruling T6)
+        }
+
+        content.CopyTo(buffer);
+        _objects[objectKey] = buffer.ToArray();
+        _contentTypes[objectKey] = contentType;
+        return objectKey;
+    }
+
+    private Stream? Get(string objectKey)
+    {
+        return _objects.TryGetValue(objectKey, out byte[]? content) ? new MemoryStream(content) : null;
+    }
+
+    private FileMeta? Stat(string objectKey)
+    {
+        if (!_objects.TryGetValue(objectKey, out byte[]? content))
+        {
+            return null;
+        }
+
+        string contentType = _contentTypes.TryGetValue(objectKey, out string? stored) ? stored : string.Empty;
+        return new FileMeta(objectKey, content.Length, contentType);
+    }
+
+    private void Delete(string objectKey)
+    {
+        _deletedKeys.Add(objectKey);
+        _objects.Remove(objectKey);
+    }
+}