WIP: show stack in collection rail

tests/clipboredtests/ClipboardPanelViewModelTests.swift

@@ -367,6 +367,40 @@ final class ClipboardPanelViewModelTests: XCTestCase {
     XCTAssertEqual(viewModel.statusMessage, "Cleared Stack")
   }
 
+  func testSelectingStackFiltersVisibleItemsInQueueOrder() {
+    let settings = makeSettings()
+    let cacheService = makeCacheService()
+    let store = makeStore(settings: settings, cacheService: cacheService)
+    let first = makeTextItem("first queue note", createdAt: Date(timeIntervalSince1970: 100))
+    let second = makeTextItem("second queue note", createdAt: Date(timeIntervalSince1970: 200))
+    let outside = makeTextItem("outside note", createdAt: Date(timeIntervalSince1970: 300))
+    store.upsert(first)
+    store.upsert(second)
+    store.upsert(outside)
+    store.flushPersistenceForTesting()
+
+    let viewModel = ClipboardPanelViewModel(store: store, settings: settings, cacheService: cacheService)
+    waitForVisibleItems(in: viewModel, count: 3)
+    XCTAssertEqual(viewModel.visibleItems.map(\.payload), ["outside note", "second queue note", "first queue note"])
+
+    viewModel.selectItem(at: 2)
+    viewModel.toggleSelectedStackMembership()
+    viewModel.selectItem(at: 1)
+    viewModel.toggleSelectedStackMembership()
+    viewModel.selectStack()
+
+    XCTAssertTrue(viewModel.isStackFilterSelected)
+    XCTAssertEqual(viewModel.visibleItems.map(\.payload), ["first queue note", "second queue note"])
+
+    viewModel.searchText = "second"
+    XCTAssertEqual(viewModel.visibleItems.map(\.payload), ["second queue note"])
+
+    viewModel.clearSearch()
+    viewModel.sortMode = .text
+    XCTAssertFalse(viewModel.isStackFilterSelected)
+    XCTAssertEqual(viewModel.visibleItems.map(\.payload), ["outside note", "second queue note", "first queue note"])
+  }
+
   func testUpdateSelectedTextRefreshesVisibleItemAndSearch() {
     let settings = makeSettings()
     let cacheService = makeCacheService()

tests/clipboredtests/ClipboardPanelViewTests.swift

@@ -370,6 +370,42 @@ final class ClipboardPanelViewTests: XCTestCase {
     XCTAssertEqual(fixture.view.debugFirstCardVisibleActionLabels, ["Paste", "Copy", "Pin", "Remove from Stack", "Edit", "Delete"])
   }
 
+  func testStackChipAppearsFiltersAndClearsWithStack() {
+    let fixture = makePanelFixture()
+    fixture.store.upsert(makeTextItem("First stack chip item", store: fixture.store))
+    fixture.store.upsert(makeTextItem("Second stack chip item", store: fixture.store))
+    drainMainQueue()
+    fixture.window.contentView?.layoutSubtreeIfNeeded()
+
+    XCTAssertFalse(fixture.view.debugStackChipIsVisible)
+
+    fixture.viewModel.selectItem(at: 1)
+    fixture.viewModel.toggleSelectedStackMembership()
+    fixture.viewModel.selectItem(at: 0)
+    fixture.viewModel.toggleSelectedStackMembership()
+    drainMainQueue()
+    fixture.window.contentView?.layoutSubtreeIfNeeded()
+
+    XCTAssertTrue(fixture.view.debugStackChipIsVisible)
+    XCTAssertEqual(fixture.view.debugStackChipCount, 2)
+    XCTAssertFalse(fixture.view.debugStackChipIsSelected)
+
+    fixture.view.debugPressStackChip()
+    drainMainQueue()
+    fixture.window.contentView?.layoutSubtreeIfNeeded()
+
+    XCTAssertEqual(fixture.view.debugSelectedCollectionTitle, "Stack")
+    XCTAssertTrue(fixture.view.debugStackChipIsSelected)
+    XCTAssertEqual(fixture.viewModel.visibleItems.map(\.payload), ["First stack chip item", "Second stack chip item"])
+
+    fixture.viewModel.clearStack()
+    drainMainQueue()
+    fixture.window.contentView?.layoutSubtreeIfNeeded()
+
+    XCTAssertFalse(fixture.view.debugStackChipIsVisible)
+    XCTAssertEqual(fixture.view.debugStackChipCount, 0)
+  }
+
   func testCollectionMenuOffersExistingCustomCollections() {
     let fixture = makePanelFixture()
     var existing = makeTextItem("Existing client note", store: fixture.store)