Files
lanework/KanbanTests/ClipboardTests.swift
T
rzen 69084fdff7 Realign code with the 2026-07-29 findings-resolution rulings
Nine rulings land as code. Reorders don't stamp — one container-change
predicate (WriteOperation.rewritesOrderOnly): within-container reorders
and the renumber rescale rewrite only order, while cross-lane, cross-board,
and trash moves stamp modified and clear modified-by; no trash special
case exists, and the m8 undo inverses conform through the same seam.
Copies are transactions: the root-strict/nested-lenient split retires for
a whole-subtree stampability preflight that refuses loudly naming the
offender, and every item-level copy severs remote/remote-state at every
level (whole-board forks carry them verbatim). Paste refuses, never
degrades: the embedded-index.md materialization and its loss row retire;
a missing staged snapshot produces nothing and posts an error-tone
one-shot named from manifest metadata. Coerce-tier fallbacks log through
the Defect stream with path context attached loader-side. Displacement is
level-uniform: a file squatting attachments inside a card heals by the
same rename ladder as board-root squatters; comments stays tolerated.
Delete Immediately joins card and lane context menus as Delete's
⌥-alternate with its own VO custom action, routed through an explicit
container so the menu target outranks standing selection. Agent guide v7
teaches the stamp discipline and the card-level attachments claim, and
sheds two stale v6 lines (lanes trash now; kind is taught). Verified
conformant, unchanged: edition-aware Undo/Redo disable, trash marquee
full-height backdrop.

Both schemes 1854 tests / 318 suites green; verify-editions 30/30.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
2026-07-30 06:49:11 -04:00

916 lines
37 KiB
Swift

import Foundation
import Testing
@testable import Kanban
/// `ClipboardStore`'s own machinery — the manifest, the staging lifecycle, the sweep, the
/// changeCount-based takeover, and the deferred cut's arming and voiding (04-interactions.md ▸
/// Clipboard). The *writes* a paste performs live in `PasteWriteTests.swift`.
///
/// Every suite here drives a real store over a real temp board, with two things injected: a fake
/// pasteboard (so a test never races the machine's one real pasteboard, nor every other test in the
/// run) and a temp staging directory (so nothing goes near the shared App Group container, which is now
/// the sibling edition's staging store too). Both seams exist exactly because those two claims are the
/// ones worth pinning.
// MARK: - Test doubles
/// The pasteboard, as a value a test can shove around.
///
/// `changeCount` behaves the way `NSPasteboard`'s does — a machine-wide counter that anyone's write
/// bumps — because that is the whole basis of takeover detection, and a double that only counted
/// *our* writes would make the interesting case untestable.
@MainActor
final class FakePasteboard: ClipboardPasteboard {
private(set) var changeCount = 0
private(set) var text: String?
private var data: Data?
func manifestData() -> Data? { data }
@discardableResult
func write(manifest: Data, text: String) -> Int {
changeCount += 1
data = manifest
self.text = text
return changeCount
}
/// Another app copied: ownership moves, our type is gone, the counter advanced.
func takeOver() {
changeCount += 1
data = nil
text = nil
}
}
// MARK: - Fixtures
let clipboardLane1 = ItemID(rawValue: Ident.lane1)
let clipboardLane2 = ItemID(rawValue: Ident.lane2)
let clipboardCard1 = ItemID(rawValue: Ident.card1)
let clipboardCard2 = ItemID(rawValue: Ident.card2)
let clipboardCard3 = ItemID(rawValue: Ident.card3)
let clipboardCard4 = ItemID(rawValue: Ident.card4)
/// An ordinary card body, for the trash's resident.
func trashResidentItem(order: String, title: String) -> String {
"""
---
schema: 1
title: \(title)
order: \(order)
created: 2026-01-01T09:00:00Z
---
\(title) body.
"""
}
/// Two lanes: `lane1` holds two cards, `lane2` holds a single card, and one card sits in the trash.
/// `card1` carries two attachments, which is what makes "the snapshot travels whole" and "the
/// fallback lost exactly two files" both assertable.
@MainActor
func makeClipboardBoard() throws -> WriterFixture {
let fixture = try WriterFixture()
try fixture.item("", Item.board)
try fixture.item(Ident.lane1, Item.rich(order: "1024", title: "Todo"))
try fixture.item("\(Ident.lane1)/\(Ident.card1)", Item.rich(order: "1024", title: "First"))
try fixture.file("\(Ident.lane1)/\(Ident.card1)/attachments/photo.png", Data("png bytes".utf8))
try fixture.file("\(Ident.lane1)/\(Ident.card1)/attachments/notes.txt", Data("notes".utf8))
try fixture.item("\(Ident.lane1)/\(Ident.card2)", Item.rich(order: "2048", title: "Second"))
try fixture.item(Ident.lane2, Item.rich(order: "2048", title: "Doing"))
try fixture.item("\(Ident.lane2)/\(Ident.card4)", Item.rich(order: "1024", title: "Fourth"))
try fixture.item(".trash/\(Ident.card3)", trashResidentItem(order: "1024", title: "Trashed"))
return fixture
}
/// A store plus the two seams, torn down together.
@MainActor
struct ClipboardHarness {
let fixture: WriterFixture
let staging: URL
let pasteboard: FakePasteboard
let clipboard: ClipboardStore
let store: BoardStore
init(fixture: WriterFixture) throws {
self.fixture = fixture
staging = FileManager.default.temporaryDirectory
.appendingPathComponent("ClipboardTests-\(UUID().uuidString)", isDirectory: true)
try FileManager.default.createDirectory(at: staging, withIntermediateDirectories: true)
pasteboard = FakePasteboard()
clipboard = ClipboardStore(pasteboard: pasteboard, stagingRoot: staging, observesActivation: false)
store = try BoardStore(rootURL: fixture.root)
}
func tearDown() {
try? FileManager.default.removeItem(at: staging)
fixture.tearDown()
}
/// The staged copy directories, sorted — "at most the current copy" is a claim about this list.
///
/// Hidden entries are excluded because the sweep keeps its own bookkeeping folder among them
/// (`ClipboardStore.prune`'s claim-then-delete, which is what makes a concurrent sweep by the
/// sibling edition safe). A staged copy is never hidden — its name is a lowercased UUID.
func stagedCopyIDs() throws -> [String] {
try FileManager.default.contentsOfDirectory(atPath: staging.path)
.filter { !$0.hasPrefix(".") }
.sorted()
}
}
@MainActor
func makeClipboardHarness() throws -> ClipboardHarness {
try ClipboardHarness(fixture: try makeClipboardBoard())
}
// MARK: - The manifest
@Suite("ClipboardManifest")
struct ClipboardManifestTests {
private func entry(_ id: String) -> ClipboardManifest.Entry {
ClipboardManifest.Entry(
id: id,
folder: id,
title: "First",
index: "---\nschema: 1\n---\nbody\n",
attachmentCount: 2
)
}
@Test("A manifest round-trips through JSON")
func roundTrip() throws {
let manifest = ClipboardManifest(
copyID: "abc",
boardRoot: URL(fileURLWithPath: "/tmp/Board.kanban", isDirectory: true),
kind: .card,
container: .board,
entries: [entry(Ident.card1)]
)
let data = try #require(manifest.encoded())
#expect(ClipboardManifest(data: data) == manifest)
}
@Test("A manifest from a future version is refused rather than half-read")
func futureVersion() throws {
var manifest = ClipboardManifest(
copyID: "abc",
boardRoot: URL(fileURLWithPath: "/tmp/B", isDirectory: true),
kind: .card,
container: .board,
entries: [entry(Ident.card1)]
)
manifest.version = ClipboardManifest.currentVersion + 1
let data = try #require(manifest.encoded())
#expect(ClipboardManifest(data: data) == nil)
}
@Test("An entryless manifest is nothing to paste")
func empty() throws {
let manifest = ClipboardManifest(
copyID: "abc",
boardRoot: URL(fileURLWithPath: "/tmp/B", isDirectory: true),
kind: .card,
container: .board,
entries: []
)
let data = try #require(manifest.encoded())
#expect(ClipboardManifest(data: data) == nil)
}
@Test("A lane entry's attachment count totals its cards'")
func totalAttachments() {
let lane = ClipboardManifest.Entry(
id: Ident.lane1,
folder: Ident.lane1,
title: "Todo",
index: "---\nschema: 1\n---\n",
attachmentCount: 0,
cards: [
.init(id: Ident.card1, title: "First", index: "a", attachmentCount: 2),
.init(id: Ident.card2, title: "Second", index: "b", attachmentCount: 1),
]
)
#expect(lane.totalAttachmentCount == 3)
}
@Test("The plain-text rendering is the titles, untitled items rendered as the board renders them")
func plainText() {
var titled = entry(Ident.card1)
var untitled = entry(Ident.card2)
untitled.title = nil
titled.title = "First"
let manifest = ClipboardManifest(
copyID: "abc",
boardRoot: URL(fileURLWithPath: "/tmp/B", isDirectory: true),
kind: .card,
container: .board,
entries: [titled, untitled]
)
#expect(manifest.plainText == "First\nUntitled")
}
}
// MARK: - Copy and staging
@MainActor
@Suite("ClipboardStore ▸ copy")
struct ClipboardCopyTests {
@Test("A copy stages the whole card folder, attachments and all")
func stagesAttachments() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
await harness.clipboard.stagingSettled()
let manifest = try #require(harness.clipboard.payload)
let staged = harness.staging
.appendingPathComponent(manifest.copyID, isDirectory: true)
.appendingPathComponent(Ident.card1, isDirectory: true)
#expect(FileManager.default.fileExists(atPath: staged.appendingPathComponent("index.md").path))
#expect(try Data(contentsOf: staged.appendingPathComponent("attachments/photo.png"))
== Data("png bytes".utf8))
#expect(try Data(contentsOf: staged.appendingPathComponent("attachments/notes.txt"))
== Data("notes".utf8))
}
@Test("The manifest records identity, side, kind and the source board root")
func manifestShape() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1, clipboardCard2], in: .board)
harness.clipboard.copy(from: harness.store)
let manifest = try #require(harness.clipboard.payload)
#expect(manifest.kind == .card)
#expect(manifest.container == .board)
#expect(manifest.rootURL.path == harness.fixture.root.path)
// Flatten order — lane `order`, then card `order`.
#expect(manifest.entries.map(\.id) == [Ident.card1, Ident.card2])
#expect(manifest.entries.map(\.title) == ["First", "Second"])
#expect(manifest.entries[0].attachmentCount == 2)
#expect(manifest.entries[1].attachmentCount == 0)
#expect(harness.pasteboard.text == "First\nSecond")
}
@Test("The embedded index text is the file's bytes, verbatim")
func embeddedIndexIsSourceBytes() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
let manifest = try #require(harness.clipboard.payload)
let onDisk = try harness.fixture.indexText("\(Ident.lane1)/\(Ident.card1)")
#expect(manifest.entries[0].index == onDisk)
}
@Test("A lane copy embeds exactly its cards — the trash is board-level, so none is nested")
func laneEntryEmbedsItsCards() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardLane1], in: .board)
harness.clipboard.copy(from: harness.store)
let manifest = try #require(harness.clipboard.payload)
#expect(manifest.kind == .lane)
#expect(manifest.entries.map(\.id) == [Ident.lane1])
#expect(manifest.entries[0].cards.map(\.id) == [Ident.card1, Ident.card2])
#expect(manifest.entries[0].totalAttachmentCount == 2)
}
@Test("A trash selection copies out, container recorded")
func trashContainerRecorded() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.transient.isTrashVisible = true
harness.store.select([clipboardCard3], in: .trash)
harness.clipboard.copy(from: harness.store)
let manifest = try #require(harness.clipboard.payload)
#expect(manifest.container == .trash)
#expect(manifest.entries.map(\.id) == [Ident.card3])
}
@Test("An empty selection copies nothing and leaves the pasteboard alone")
func emptySelection() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.clipboard.copy(from: harness.store)
#expect(harness.pasteboard.changeCount == 0)
#expect(harness.clipboard.payload == nil)
}
@Test("The store holds at most the current copy — a second copy sweeps the first")
func atMostTheCurrentCopy() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
await harness.clipboard.stagingSettled()
let first = try #require(harness.clipboard.payload?.copyID)
harness.store.select([clipboardCard2], in: .board)
harness.clipboard.copy(from: harness.store)
await harness.clipboard.stagingSettled()
let second = try #require(harness.clipboard.payload?.copyID)
#expect(first != second)
#expect(try harness.stagedCopyIDs() == [second])
}
}
// MARK: - The sweep
@MainActor
@Suite("ClipboardStore ▸ sweep")
struct ClipboardSweepTests {
@Test("A launch sweep collects every tree the pasteboard no longer names")
func launchSweepPurgesOrphans() async throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let staging = FileManager.default.temporaryDirectory
.appendingPathComponent("ClipboardTests-\(UUID().uuidString)", isDirectory: true)
defer { try? FileManager.default.removeItem(at: staging) }
// Two trees from a previous launch, and a pasteboard that names neither.
for orphan in ["one", "two"] {
try FileManager.default.createDirectory(
at: staging.appendingPathComponent(orphan, isDirectory: true),
withIntermediateDirectories: true
)
}
let clipboard = ClipboardStore(
pasteboard: FakePasteboard(),
stagingRoot: staging,
observesActivation: false
)
await clipboard.stagingSettled()
#expect(try FileManager.default.contentsOfDirectory(atPath: staging.path).isEmpty)
}
@Test("A sweep keeps the tree the pasteboard still names")
func sweepKeepsTheCurrentCopy() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
try FileManager.default.createDirectory(
at: harness.staging.appendingPathComponent("stale", isDirectory: true),
withIntermediateDirectories: true
)
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
await harness.clipboard.stagingSettled()
let current = try #require(harness.clipboard.payload?.copyID)
#expect(try harness.stagedCopyIDs() == [current])
}
@Test("A takeover makes our own tree an orphan, and the next sweep collects it")
func takeoverOrphansOurSnapshot() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
await harness.clipboard.stagingSettled()
#expect(try harness.stagedCopyIDs().count == 1)
harness.pasteboard.takeOver()
harness.clipboard.sweep()
await harness.clipboard.stagingSettled()
#expect(try harness.stagedCopyIDs().isEmpty)
}
// MARK: The sibling edition's sweep
//
// The staging store now lives in the shared App Group container (12-editions.md ▸ Both editions
// installed), so base and Pro sweep the same directory on their own launches, activations, copies
// and pastes. Both compute the *same* answer — the keep set is the one `copyID` the machine-wide
// pasteboard names — so they never disagree about what should go; what they can do is arrive at the
// same doomed tree together. These two tests are the ruling's two clauses: atomic removals, and
// missing-entry = already swept.
@Test("Two editions sweeping the same store at once agree, and neither errors")
func concurrentSweepsFromBothEditionsAgree() async throws {
let staging = FileManager.default.temporaryDirectory
.appendingPathComponent("ClipboardTests-\(UUID().uuidString)", isDirectory: true)
defer { try? FileManager.default.removeItem(at: staging) }
try FileManager.default.createDirectory(at: staging, withIntermediateDirectories: true)
// Six trees, each with a file in it so a removal is a real recursive delete rather than an
// empty-directory unlink — the case where two sweepers walking one tree could see it half gone.
for name in ["a", "b", "c", "d", "e", "keep"] {
let tree = staging.appendingPathComponent(name, isDirectory: true)
try FileManager.default.createDirectory(
at: tree.appendingPathComponent("nested", isDirectory: true),
withIntermediateDirectories: true
)
try Data("bytes".utf8).write(to: tree.appendingPathComponent("nested/file.txt", isDirectory: false))
}
// Both editions read the *same* pasteboard, which is why both keep sets are `keep`. Modelled as
// two stores over one staging root with pasteboards holding the same manifest, since two
// processes are not something a unit test can have.
let manifest = ClipboardManifest(
copyID: "keep",
boardRoot: URL(fileURLWithPath: "/Boards/Shared.kanban", isDirectory: true),
kind: .card,
container: .board,
// One entry, because a manifest with none is refused outright (`init?(data:)`) — and a
// refused manifest is a keep set of nothing, which is a different test.
entries: [
ClipboardManifest.Entry(
id: Ident.card1,
folder: Ident.card1,
title: "First",
index: "---\nschema: 1\ntitle: First\norder: 1024\n---\n",
attachmentCount: 0
)
]
)
let data = try #require(manifest.encoded())
let onePasteboard = FakePasteboard()
onePasteboard.write(manifest: data, text: manifest.plainText)
let otherPasteboard = FakePasteboard()
otherPasteboard.write(manifest: data, text: manifest.plainText)
// Each `init` sweeps — the launch sweep — so the two are already racing before either explicit
// call below.
let one = ClipboardStore(pasteboard: onePasteboard, stagingRoot: staging, observesActivation: false)
let other = ClipboardStore(pasteboard: otherPasteboard, stagingRoot: staging, observesActivation: false)
one.sweep()
other.sweep()
one.sweep()
await one.stagingSettled()
await other.stagingSettled()
// The answer both computed, arrived at exactly once: the named tree intact, everything else
// gone, and no bookkeeping left behind.
#expect(try FileManager.default.contentsOfDirectory(atPath: staging.path).sorted() == ["keep"])
#expect(FileManager.default.fileExists(atPath: staging.appendingPathComponent("keep/nested/file.txt").path))
}
@Test("A tree that vanished before the sweep reached it is already swept, not an error")
func aVanishedEntryIsANoOp() async throws {
let staging = FileManager.default.temporaryDirectory
.appendingPathComponent("ClipboardTests-\(UUID().uuidString)", isDirectory: true)
defer { try? FileManager.default.removeItem(at: staging) }
try FileManager.default.createDirectory(at: staging, withIntermediateDirectories: true)
let doomed = staging.appendingPathComponent("gone", isDirectory: true)
try FileManager.default.createDirectory(at: doomed, withIntermediateDirectories: true)
let clipboard = ClipboardStore(
pasteboard: FakePasteboard(),
stagingRoot: staging,
observesActivation: false
)
// The sibling got there first — which from this store's side is indistinguishable from the
// directory listing simply being stale by the time it is walked.
try FileManager.default.removeItem(at: doomed)
clipboard.sweep()
await clipboard.stagingSettled()
#expect(try FileManager.default.contentsOfDirectory(atPath: staging.path).isEmpty)
// And a staging root that has gone altogether — the sibling swept, then something removed the
// shared folder — is nothing to do either, rather than a throw on the way to a no-op.
try FileManager.default.removeItem(at: staging)
clipboard.sweep()
await clipboard.stagingSettled()
#expect(!FileManager.default.fileExists(atPath: staging.path), "a vanished store is not recreated by a sweep")
}
}
// MARK: - Takeover
@MainActor
@Suite("ClipboardStore ▸ takeover")
struct ClipboardTakeoverTests {
@Test("A changeCount that moved without us is a takeover: the payload goes")
func payloadClears() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
#expect(harness.clipboard.payload != nil)
harness.pasteboard.takeOver()
harness.clipboard.refresh()
#expect(harness.clipboard.payload == nil)
#expect(harness.clipboard.canPaste(into: harness.store) == false)
}
@Test("An unchanged changeCount is one read and no decode")
func refreshIsGuarded() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
let before = harness.pasteboard.changeCount
harness.clipboard.refresh()
harness.clipboard.refresh()
// Nothing was written, so nothing moved — and the payload survived the two refreshes intact.
#expect(harness.pasteboard.changeCount == before)
#expect(harness.clipboard.payload != nil)
}
@Test("A takeover voids an armed cut and undims its items")
func takeoverVoidsTheCut() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.cut(from: harness.store)
#expect(harness.store.transient.pendingCut.ids == [clipboardCard1])
harness.pasteboard.takeOver()
harness.clipboard.refresh()
#expect(harness.store.transient.pendingCut.isEmpty)
}
}
// MARK: - Cut arming
@MainActor
@Suite("ClipboardStore ▸ cut")
struct ClipboardCutTests {
@Test("A cut arms the source board's pending set, in flatten order membership")
func armsPendingCut() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1, clipboardCard4], in: .board)
harness.clipboard.cut(from: harness.store)
#expect(harness.store.transient.pendingCut.ids == [clipboardCard1, clipboardCard4])
#expect(harness.store.transient.pendingCut.container == .board)
}
@Test("A second copy voids the pending cut — its pasteboard entry has been overwritten")
func copyVoidsTheCut() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.cut(from: harness.store)
#expect(!harness.store.transient.pendingCut.isEmpty)
harness.store.select([clipboardCard2], in: .board)
harness.clipboard.copy(from: harness.store)
#expect(harness.store.transient.pendingCut.isEmpty)
}
@Test("Deletion voids per item: a deleted cut member leaves the pending set on reload")
func deletionVoidsPerItem() async throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1, clipboardCard2], in: .board)
harness.clipboard.cut(from: harness.store)
harness.store.delete([clipboardCard1])
harness.store.handleWatcherEvent(.treeChanged(.appMediated))
await harness.store.awaitQuiescence()
#expect(harness.store.transient.pendingCut.ids == [clipboardCard2])
}
}
// MARK: - Availability
@MainActor
@Suite("ClipboardStore ▸ availability")
struct ClipboardAvailabilityTests {
@Test("Copy needs a selection that names something the board renders")
func copyNeedsASelection() throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
#expect(harness.clipboard.canCopy(from: harness.store) == false)
harness.store.select([clipboardCard1], in: .board)
#expect(harness.clipboard.canCopy(from: harness.store))
}
/// 04-interactions.md ▸ The trash, resettled 2026-07-28: "⌘X **works** (it was disabled under
/// the tombstone model): cut in the trash, paste into a lane is the keyboard-native restore, an
/// ordinary folder move."
@Test("Both copy and cut work on a trash selection — cut is the keyboard restore")
func trashTakesCopyAndCut() throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.transient.isTrashVisible = true
harness.store.select([clipboardCard3], in: .trash)
#expect(harness.clipboard.canCopy(from: harness.store))
#expect(harness.clipboard.canCut(from: harness.store))
}
@Test("The read-only lock blocks cut but never copy")
func lockBlocksCutOnly() throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.store.enterVanishedRootLock()
#expect(harness.clipboard.canCopy(from: harness.store))
#expect(harness.clipboard.canCut(from: harness.store) == false)
#expect(harness.clipboard.canPaste(into: harness.store) == false)
}
@Test("An open inline editor closes all three — the focused-editor rule")
func focusedEditorClosesEverything() throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
harness.store.transient.beginRename(of: clipboardCard1, currentTitle: "First")
#expect(harness.clipboard.canCopy(from: harness.store) == false)
#expect(harness.clipboard.canCut(from: harness.store) == false)
#expect(harness.clipboard.canPaste(into: harness.store) == false)
}
@Test("Paste needs a payload")
func pasteNeedsAPayload() throws {
let harness = try makeClipboardHarness()
defer { harness.tearDown() }
#expect(harness.clipboard.canPaste(into: harness.store) == false)
harness.store.select([clipboardCard1], in: .board)
harness.clipboard.copy(from: harness.store)
#expect(harness.clipboard.canPaste(into: harness.store))
}
@Test("On a zero-lane board a card payload disables paste and a lane payload does not")
func zeroLaneBoard() async throws {
let source = try makeClipboardBoard()
defer { source.tearDown() }
let empty = try WriterFixture()
defer { empty.tearDown() }
try empty.item("", Item.board)
let staging = FileManager.default.temporaryDirectory
.appendingPathComponent("ClipboardTests-\(UUID().uuidString)", isDirectory: true)
defer { try? FileManager.default.removeItem(at: staging) }
let clipboard = ClipboardStore(
pasteboard: FakePasteboard(),
stagingRoot: staging,
observesActivation: false
)
let sourceStore = try BoardStore(rootURL: source.root)
let emptyStore = try BoardStore(rootURL: empty.root)
sourceStore.select([clipboardCard1], in: .board)
clipboard.copy(from: sourceStore)
#expect(clipboard.canPaste(into: emptyStore) == false)
sourceStore.select([clipboardLane1], in: .board)
clipboard.copy(from: sourceStore)
#expect(clipboard.canPaste(into: emptyStore))
}
}
// MARK: - The paste anchors
@MainActor
@Suite("PasteTarget")
struct PasteTargetTests {
private func snapshot(_ fixture: WriterFixture) throws -> BoardModel {
try BoardLoader.load(boardRoot: fixture.root).model
}
@Test("A card payload lands after the anchor card")
func afterTheAnchorCard() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
let target = PasteTarget.cards(
selection: ItemReferenceSet(ids: [clipboardCard1], container: .board),
lastActiveLaneID: nil,
snapshot: model
)
#expect(target == PasteTarget.Cards(laneID: clipboardLane1, index: 1))
}
@Test("A selected lane appends to its bottom")
func appendsToASelectedLane() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
let target = PasteTarget.cards(
selection: ItemReferenceSet(ids: [clipboardLane1], container: .board),
lastActiveLaneID: nil,
snapshot: model
)
// Two rendered cards.
#expect(target == PasteTarget.Cards(laneID: clipboardLane1, index: 2))
}
@Test("A multi-selection anchors at its last member in flatten order")
func flattenOrderAnchor() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
let target = PasteTarget.cards(
selection: ItemReferenceSet(ids: [clipboardCard4, clipboardCard1], container: .board),
lastActiveLaneID: nil,
snapshot: model
)
// `card4` is in the second lane, so it is last in flatten order however the set is spelled.
#expect(target == PasteTarget.Cards(laneID: clipboardLane2, index: 1))
}
@Test("A trash selection never anchors: it behaves as nothing selected")
func trashSelectionNeverAnchors() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
let target = PasteTarget.cards(
selection: ItemReferenceSet(ids: [clipboardCard3], container: .trash),
lastActiveLaneID: clipboardLane2,
snapshot: model
)
// The last-active lane, appended — the trash is never the destination.
#expect(target == PasteTarget.Cards(laneID: clipboardLane2, index: 1))
}
@Test("Nothing selected and no last-active lane falls back to the first lane")
func firstLaneFallback() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
let target = PasteTarget.cards(selection: .empty, lastActiveLaneID: nil, snapshot: model)
#expect(target == PasteTarget.Cards(laneID: clipboardLane1, index: 2))
}
@Test("A zero-lane board has no card target at all")
func zeroLaneBoardHasNoCardTarget() throws {
let fixture = try WriterFixture()
defer { fixture.tearDown() }
try fixture.item("", Item.board)
let model = try snapshot(fixture)
#expect(PasteTarget.cards(selection: .empty, lastActiveLaneID: nil, snapshot: model) == nil)
}
@Test("A lane payload lands after the anchor lane")
func afterTheAnchorLane() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
#expect(PasteTarget.lanes(
selection: ItemReferenceSet(ids: [clipboardLane1], container: .board),
snapshot: model
) == 1)
}
@Test("A selected card names its lane for a lane paste")
func aSelectedCardNamesItsLane() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
#expect(PasteTarget.lanes(
selection: ItemReferenceSet(ids: [clipboardCard1], container: .board),
snapshot: model
) == 1)
}
@Test("Nothing (or a trash selection) lands a lane at the board's right end")
func rightEnd() throws {
let fixture = try makeClipboardBoard()
defer { fixture.tearDown() }
let model = try snapshot(fixture)
#expect(PasteTarget.lanes(selection: .empty, snapshot: model) == 2)
#expect(PasteTarget.lanes(
selection: ItemReferenceSet(ids: [clipboardCard3], container: .trash),
snapshot: model
) == 2)
}
@Test("A zero-lane board still has a lane slot — position zero")
func zeroLaneBoardStillTakesALane() throws {
let fixture = try WriterFixture()
defer { fixture.tearDown() }
try fixture.item("", Item.board)
let model = try BoardLoader.load(boardRoot: fixture.root).model
#expect(PasteTarget.lanes(selection: .empty, snapshot: model) == 0)
}
}
// MARK: - The refused paste's phrasing
/// **04-interactions.md ▸ Clipboard, re-ruled 2026-07-29** — refuse, never degrade:
///
/// > A paste whose staged snapshot is missing or unreadable refuses loudly — never degrades …
/// > the paste produces **nothing**, and a one-shot failure banner names it from the manifest's
/// > metadata ("Couldn't paste 'Fix login' — the copied content is gone").
///
/// The retired suite these replace pinned `degradedPasteMessage(for:)` and its loss row — "Pasted
/// 'Fix login' without its 3 attachments". Both are gone with the degraded materialization: nothing
/// arrives, so there is no partial arrival to account for.
@Suite("BannerCenter ▸ refused paste")
struct RefusedPasteBannerTests {
/// 04's own example sentence, composed the way every failure headline is: the action clause the
/// banner owns, an em dash, the cause.
@Test("04's own example sentence")
@MainActor
func theExampleSentence() {
let center = BannerCenter()
center.postRefusedPaste(title: "Fix login", stagedAt: "/tmp/staging/abc")
#expect(center.oneShots.count == 1)
let headline = try? #require(center.oneShots.first).error
#expect(headline.map(BannerCenter.headline(for:)) == "Couldn't paste 'Fix login' — the copied content is gone")
}
/// "Untitled" is a rendering, never a value (03-board-ui.md § Card face), so an untitled entry is
/// "the item" — `actionPhrase`'s standing convention for a failure with no title to quote.
@Test("An untitled entry is 'the item', never the Untitled rendering")
@MainActor
func untitled() {
let center = BannerCenter()
center.postRefusedPaste(title: nil, stagedAt: "/tmp/staging/abc")
let error = try? #require(center.oneShots.first).error
#expect(error.map(BannerCenter.headline(for:)) == "Couldn't paste the item — the copied content is gone")
}
/// **The pivot, stated as a class change**: the degraded paste was a loss row because the items
/// landed and only their attachments did not. A refusal is *a write that did not happen*, which is
/// 02-architecture.md's own definition of a one-shot — so it ranks with the true failures, carries
/// the error tone, and posts no loss row at all.
@Test("A refused paste is an error-tone one-shot, not a loss row")
@MainActor
func refusalIsAOneShotNotALossRow() {
let center = BannerCenter()
center.postRefusedPaste(title: "Fix login", stagedAt: "/tmp/staging/abc")
#expect(center.losses.isEmpty, "the degraded paste's loss row is retired")
#expect(center.signposts.isEmpty)
let rows = BannerCenter.rows(
lock: nil, breakage: nil, oneShots: center.oneShots, losses: [], suspension: nil, operations: []
)
#expect(rows.count == 1)
#expect(rows[0].tone == .error)
#expect(rows[0].dismissID == center.oneShots.first?.id)
}
/// The staging path is what the error names, so a bug report about a refusal has something to go
/// on — the file that was not there.
@Test("The refusal names the staged path it could not find")
@MainActor
func namesTheStagedPath() {
let center = BannerCenter()
center.postRefusedPaste(title: "Fix login", stagedAt: "/tmp/staging/abc")
#expect(center.oneShots.first?.error.path == "/tmp/staging/abc")
#expect(center.oneShots.first?.error.reason == .clipboardContentGone)
#expect(center.oneShots.first?.error.operation == .paste(title: "Fix login"))
}
/// **The loss class survives the retirement** — 02's warning-tone class still has live producers
/// (a Finder drop that skipped folders, the app's own relocation and repair notices); only the
/// degraded-paste row left it.
@Test("The loss class still has its other producers")
@MainActor
func theLossClassSurvives() {
let center = BannerCenter()
center.postSkippedFolders(count: 2)
#expect(center.losses.count == 1)
#expect(center.losses.first?.message == "Folders can't be attached — 2 skipped")
}
}