test(behavior): parity axis helpers for SDT contracts (SD-3237/SD-3218)

tests/behavior/helpers/sdt.ts

@@ -229,6 +229,8 @@ export interface InlineSdtSnapshot {
   sdtContent: string | null;
   sdtPos: number;
   docText: string;
+  docSize: number;
+  paragraphCount: number;
 }
 
 /** Snapshot the current selection plus the existence/content/position of inline SDT `sdtId`. */
@@ -257,6 +259,71 @@ export async function getInlineSdtSnapshot(page: Page, sdtId: string): Promise<I
       sdtContent,
       sdtPos,
       docText: state.doc.textContent,
+      docSize: state.doc.content.size,
+      paragraphCount: state.doc.content.childCount,
     };
   }, sdtId);
 }
+
+// ---------------------------------------------------------------------------
+// Parity axis helpers. Pure functions that derive a Word-parity-contract axis
+// value from a snapshot (+ the SDT range), using the same vocabulary as the
+// word-api contracts (see parity-contracts/TRANSLATION.md). Keeping them as
+// pure compute functions makes them unit-testable without a browser and makes
+// each parity spec a one-liner: expect(selectionScope(snap, sdt)).toBe(...).
+// ---------------------------------------------------------------------------
+
+export type SelectionScope =
+  | 'collapsed'
+  | 'cc-content'
+  | 'whole-content-control'
+  | 'within-cc'
+  | 'cc-and-beyond'
+  | 'whole-document'
+  | 'outside-cc';
+
+/** Classify the current selection relative to the SDT range (current, post-edit). */
+export function selectionScope(snap: InlineSdtSnapshot, range: InlineSdtRange): SelectionScope {
+  if (snap.empty) return 'collapsed';
+  if (snap.from <= 1 && snap.to >= snap.docSize - 1) return 'whole-document';
+  if (snap.from === range.start && snap.to === range.end) return 'cc-content';
+  if (snap.from === range.pos && snap.to === range.nodeEnd) return 'whole-content-control';
+  if (snap.from >= range.start && snap.to <= range.end) return 'within-cc';
+  if (snap.from < range.end && snap.to > range.start) return 'cc-and-beyond';
+  return 'outside-cc';
+}
+
+export type ContentControlLifecycle = 'preserved' | 'emptied' | 'deleted' | 'created' | 'none';
+
+/** Classify what happened to the SDT wrapper between two snapshots. */
+export function contentControlLifecycle(before: InlineSdtSnapshot, after: InlineSdtSnapshot): ContentControlLifecycle {
+  if (before.sdtExists && !after.sdtExists) return 'deleted';
+  if (!before.sdtExists && after.sdtExists) return 'created';
+  if (before.sdtExists && after.sdtExists) {
+    const wasNonEmpty = !!before.sdtContent;
+    const nowEmpty = !after.sdtContent;
+    if (wasNonEmpty && nowEmpty) return 'emptied';
+    return 'preserved';
+  }
+  return 'none';
+}
+
+export type CaretLocation = 'inside-cc' | 'before-cc' | 'after-cc' | 'outside-cc';
+
+/** Collapsed-caret position relative to the SDT range; null when the selection is a range. */
+export function caretLocation(snap: InlineSdtSnapshot, range: InlineSdtRange): CaretLocation | null {
+  if (!snap.empty) return null;
+  if (snap.from >= range.start && snap.from <= range.end) return 'inside-cc';
+  if (snap.from <= range.pos) return 'before-cc';
+  if (snap.from >= range.nodeEnd) return 'after-cc';
+  return 'outside-cc';
+}
+
+export type BodyMutation = 'none' | 'text-changed' | 'structure-changed';
+
+/** Whole-document body text / paragraph change between two snapshots (excludes CC lifecycle). */
+export function bodyMutation(before: InlineSdtSnapshot, after: InlineSdtSnapshot): BodyMutation {
+  if (before.paragraphCount !== after.paragraphCount) return 'structure-changed';
+  if (before.docText !== after.docText) return 'text-changed';
+  return 'none';
+}

tests/behavior/tests/helpers/sdt-parity.spec.ts

@@ -0,0 +1,120 @@
+import { test, expect } from '@playwright/test';
+import {
+  selectionScope,
+  contentControlLifecycle,
+  caretLocation,
+  bodyMutation,
+  type InlineSdtSnapshot,
+  type InlineSdtRange,
+} from '../../helpers/sdt.js';
+
+/**
+ * Pure unit tests for the parity axis helpers - no browser. Synthetic
+ * snapshots exercise each axis value so the consumer specs can rely on these
+ * one-liners instead of re-deriving from/to math (which is where the
+ * edge-direction bug crept in earlier).
+ */
+
+// Inline SDT at pos 8: node [8,24), content [9,23). " After" follows.
+const RANGE: InlineSdtRange = { id: '1', pos: 8, start: 9, end: 23, nodeEnd: 24, content: 'inline value' };
+
+function snap(p: Partial<InlineSdtSnapshot>): InlineSdtSnapshot {
+  return {
+    from: 0,
+    to: 0,
+    empty: true,
+    nodeType: null,
+    sdtExists: true,
+    sdtContent: 'inline value',
+    sdtPos: 8,
+    docText: 'Before inline value After',
+    docSize: 33,
+    paragraphCount: 1,
+    ...p,
+  };
+}
+
+test.describe('selectionScope', () => {
+  test('collapsed', () => {
+    expect(selectionScope(snap({ from: 12, to: 12, empty: true }), RANGE)).toBe('collapsed');
+  });
+  test('cc-content (exact content range)', () => {
+    expect(selectionScope(snap({ from: 9, to: 23, empty: false }), RANGE)).toBe('cc-content');
+  });
+  test('whole-content-control (node incl boundaries)', () => {
+    expect(selectionScope(snap({ from: 8, to: 24, empty: false }), RANGE)).toBe('whole-content-control');
+  });
+  test('within-cc (sub-range of content)', () => {
+    expect(selectionScope(snap({ from: 10, to: 14, empty: false }), RANGE)).toBe('within-cc');
+  });
+  test('cc-and-beyond (overlaps and spills out)', () => {
+    expect(selectionScope(snap({ from: 12, to: 28, empty: false }), RANGE)).toBe('cc-and-beyond');
+  });
+  test('whole-document', () => {
+    expect(selectionScope(snap({ from: 0, to: 33, empty: false, docSize: 33 }), RANGE)).toBe('whole-document');
+  });
+  test('outside-cc', () => {
+    expect(selectionScope(snap({ from: 1, to: 5, empty: false }), RANGE)).toBe('outside-cc');
+  });
+});
+
+test.describe('contentControlLifecycle', () => {
+  test('preserved (present, content unchanged)', () => {
+    expect(contentControlLifecycle(snap({}), snap({}))).toBe('preserved');
+  });
+  test('preserved (present, content changed but not emptied)', () => {
+    expect(contentControlLifecycle(snap({ sdtContent: 'inline value' }), snap({ sdtContent: 'inline valu' }))).toBe(
+      'preserved',
+    );
+  });
+  test('emptied (non-empty to empty, still present)', () => {
+    expect(contentControlLifecycle(snap({ sdtContent: 'inline value' }), snap({ sdtContent: '' }))).toBe('emptied');
+  });
+  test('deleted (present to absent)', () => {
+    expect(contentControlLifecycle(snap({ sdtExists: true }), snap({ sdtExists: false, sdtContent: null }))).toBe(
+      'deleted',
+    );
+  });
+  test('created (absent to present)', () => {
+    expect(contentControlLifecycle(snap({ sdtExists: false, sdtContent: null }), snap({ sdtExists: true }))).toBe(
+      'created',
+    );
+  });
+  test('none (absent throughout)', () => {
+    expect(
+      contentControlLifecycle(
+        snap({ sdtExists: false, sdtContent: null }),
+        snap({ sdtExists: false, sdtContent: null }),
+      ),
+    ).toBe('none');
+  });
+});
+
+test.describe('caretLocation', () => {
+  test('inside-cc', () => {
+    expect(caretLocation(snap({ from: 15, to: 15, empty: true }), RANGE)).toBe('inside-cc');
+  });
+  test('before-cc', () => {
+    expect(caretLocation(snap({ from: 8, to: 8, empty: true }), RANGE)).toBe('before-cc');
+  });
+  test('after-cc', () => {
+    expect(caretLocation(snap({ from: 24, to: 24, empty: true }), RANGE)).toBe('after-cc');
+  });
+  test('null for a range selection', () => {
+    expect(caretLocation(snap({ from: 9, to: 23, empty: false }), RANGE)).toBeNull();
+  });
+});
+
+test.describe('bodyMutation', () => {
+  test('none', () => {
+    expect(bodyMutation(snap({}), snap({}))).toBe('none');
+  });
+  test('text-changed', () => {
+    expect(
+      bodyMutation(snap({ docText: 'Before inline value After' }), snap({ docText: 'Before inline valu After' })),
+    ).toBe('text-changed');
+  });
+  test('structure-changed (paragraph count differs)', () => {
+    expect(bodyMutation(snap({ paragraphCount: 1 }), snap({ paragraphCount: 2 }))).toBe('structure-changed');
+  });
+});

tests/behavior/tests/sdt/sdt-select-all-inside.spec.ts

@@ -1,7 +1,7 @@
 import path from 'path';
 import { fileURLToPath } from 'url';
 import { test, expect, type SuperDocFixture } from '../../fixtures/superdoc.js';
-import { getInlineSdtRange, getInlineSdtSnapshot } from '../../helpers/sdt.js';
+import { getInlineSdtRange, getInlineSdtSnapshot, selectionScope } from '../../helpers/sdt.js';
 
 /**
  * Select-all (Ctrl/Cmd+A) with the caret inside an inline SDT.
@@ -31,7 +31,7 @@ async function selectAllInside(superdoc: SuperDocFixture, fixture: string) {
   await superdoc.waitForStable();
   await superdoc.press('ControlOrMeta+a');
   await superdoc.waitForStable();
-  return getInlineSdtSnapshot(superdoc.page, sdt!.id);
+  return { sdt: sdt!, snap: await getInlineSdtSnapshot(superdoc.page, sdt!.id) };
 }
 
 test.describe('SDT select-all from inside - Word parity', () => {
@@ -41,14 +41,11 @@ test.describe('SDT select-all from inside - Word parity', () => {
     test(`${mode}: select-all inside the SDT selects the whole document, not just the control`, async ({
       superdoc,
     }) => {
-      const s = await selectAllInside(superdoc, FIXTURE[mode]);
-      expect(s.empty).toBe(false);
-      const docSize = await superdoc.page.evaluate(() => (window as any).editor.state.doc.content.size);
-      // selection spans the whole body, not just the SDT content
-      expect(s.from).toBeLessThanOrEqual(1);
-      expect(s.to).toBeGreaterThanOrEqual(docSize - 1);
+      const { sdt, snap } = await selectAllInside(superdoc, FIXTURE[mode]);
+      // Word's contract axis: selection escapes the control to the whole document.
+      expect(selectionScope(snap, sdt)).toBe('whole-document');
       // and the SDT is untouched by a non-destructive select-all
-      expect(s.sdtExists).toBe(true);
+      expect(snap.sdtExists).toBe(true);
     });
   }
 });