Puranjay Savar Mattas
6e1ffb96fd
Convert from git submodule to plain vendored copy. No push access to upstream nodes-app/swift-markdown-engine meant our local fix commit (05c1720) was stranded and unreachable from any remote on fresh clones/CI. Vendoring as plain files folds it into normal repo history instead.
68 lines
2.3 KiB
Swift
68 lines
2.3 KiB
Swift
//
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// PerDocumentUndoTests.swift
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// MarkdownEngineTests
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//
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// Per-`documentId` undo: a stable manager per document (Cmd+Z survives file
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// switches) and dropping a stale stack when the document's text was rewritten
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// while it was switched away. Headless.
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//
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import AppKit
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import SwiftUI
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import Testing
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@testable import MarkdownEngine
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@MainActor
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struct PerDocumentUndoTests {
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private func makeCoordinator() -> NativeTextViewCoordinator {
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NativeTextViewCoordinator(
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text: .constant(""), fontName: "SF Pro", fontSize: 16,
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isWikiLinkActive: .constant(false), onLinkClick: nil, onInlineSelectionChange: nil
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)
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}
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/// UndoManager with one registered action, so `canUndo` is deterministically true.
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private func populatedManager() -> UndoManager {
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let target = NSObject()
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let m = UndoManager()
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m.groupsByEvent = false
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m.beginUndoGrouping()
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m.registerUndo(withTarget: target) { _ in }
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m.endUndoGrouping()
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return m
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}
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@Test("Stable manager per document; distinct across; original returned on switch-back")
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func vendsStablePerDocumentManager() {
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let c = makeCoordinator()
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let tv = NativeTextView(frame: .zero)
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c.documentId = "A"
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let a = c.undoManager(for: tv)
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#expect(c.undoManager(for: tv) === a)
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c.documentId = "B"
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#expect(c.undoManager(for: tv) !== a)
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c.documentId = "A"
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#expect(c.undoManager(for: tv) === a)
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}
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@Test("Undo stack dropped only when the reloaded text diverged from the snapshot")
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func invalidatesOnlyOnDivergedContent() {
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let c = makeCoordinator()
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let m = populatedManager()
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c.undoManagers["A"] = m
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c.undoContentSnapshots["A"] = "hello"
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#expect(c.invalidateUndoIfContentDiverged(for: "A", incomingText: "hello") == false)
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#expect(m.canUndo) // unchanged → kept
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#expect(c.invalidateUndoIfContentDiverged(for: "A", incomingText: "hello world") == true)
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#expect(!m.canUndo) // diverged → dropped
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}
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@Test("No snapshot (first visit) never clears")
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func noSnapshotNeverClears() {
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let c = makeCoordinator()
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c.undoManagers["A"] = populatedManager()
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#expect(c.invalidateUndoIfContentDiverged(for: "A", incomingText: "x") == false)
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}
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}
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