version-diff.test.ts

version-diff.test.tspackages/shared/src/version-diff.test.tsraw ← src2,940 B← Back to the app
1import { describe, expect, it } from "vitest";
2import { diffSnapshots, type PageSnapshot, type SnapshotBlock } from "./version-diff.js";
3 
4const b = (id: string, text: string, extra: Partial<SnapshotBlock> = {}): SnapshotBlock => ({
5  id,
6  type: "PARAGRAPH",
7  content: { text },
8  properties: {},
9  parentId: null,
10  position: id,
11  ...extra
12});
13 
14const snap = (blocks: SnapshotBlock[], page: PageSnapshot["page"] = { title: "T", icon: null, description: null }): PageSnapshot => ({
15  page,
16  blocks
17});
18 
19describe("version snapshot diff (T-150)", () => {
20  it("identical snapshots → empty diff", () => {
21    const s = snap([b("a", "one"), b("c", "three")]);
22    const d = diffSnapshots(s, snap([...s.blocks]), 1, 2);
23    expect(d.summary).toEqual({ added: 0, deleted: 0, modified: 0, moved: 0, unchanged: 2 });
24    expect(Object.keys(d.page)).toHaveLength(0);
25  });
26 
27  it("classifies added / deleted / modified / moved", () => {
28    const from = snap([
29      b("a", "one"),
30      b("b", "two"),
31      b("c", "three", { position: "c0" }),
32      b("gone", "bye")
33    ]);
34    const to = snap([
35      b("a", "ONE changed"),
36      b("b", "two", { properties: { align: "center" } }),
37      b("c", "three", { position: "z9" }),
38      b("d", "new block")
39    ]);
40    const d = diffSnapshots(from, to, 1, 2);
41    expect(d.summary).toEqual({ added: 1, deleted: 1, modified: 2, moved: 1, unchanged: 0 });
42    expect(d.added.map((x) => x.id)).toEqual(["d"]);
43    expect(d.deleted.map((x) => x.id)).toEqual(["gone"]);
44    const byId = Object.fromEntries(d.modified.map((m) => [m.id, m.fields]));
45    expect(byId).toEqual({ a: ["content"], b: ["properties"] });
46    expect(d.moved).toEqual([{ id: "c", from: "c0", to: "z9" }]);
47  });
48 
49  it("detects parent moves as modified (structure change), not moved", () => {
50    const from = snap([b("a", "top")]);
51    const to = snap([b("a", "top", { parentId: "toggle1" })]);
52    const d = diffSnapshots(from, to, 1, 2);
53    expect(d.modified).toEqual([{ id: "a", fields: ["parentId"] }]);
54    expect(d.moved).toHaveLength(0);
55  });
56 
57  it("compares page fields and reports from/to values", () => {
58    const d = diffSnapshots(
59      snap([], { title: "Old", icon: "x", description: null }),
60      snap([], { title: "Old", icon: null, description: "new" }),
61      1, 2
62    );
63    expect(d.page).toEqual({
64      icon: { from: "x", to: null },
65      description: { from: null, to: "new" }
66    });
67  });
68 
69  it("key order in content/properties objects does NOT count as a change", () => {
70    const from = snap([b("a", "x", { properties: { b: 1, a: 2 } })]);
71    const to = snap([b("a", "x", { properties: { a: 2, b: 1 } })]);
72    expect(diffSnapshots(from, to, 1, 2).summary.modified).toBe(0);
73  });
74 
75  it("type change is flagged", () => {
76    const d = diffSnapshots(snap([b("a", "x")]), snap([b("a", "x", { type: "HEADING_1" })]), 1, 2);
77    expect(d.modified).toEqual([{ id: "a", fields: ["type"] }]);
78  });
79});
80