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1import {
2 act,
3 useLayoutEffect,
4 useImperativeHandle,
5 useRef,
6 useState,
7 type Ref,
8 type ReactNode,
9} from "react";
10import { createRoot } from "react-dom/client";
11import { expect, it, vi } from "vite-plus/test";
12import { AsyncResult } from "effect/reactivity";
13import * as Cause from "effect/Cause";
14import type { HighlightNativeReviewDiffVisibleRowsInput } from "./nativeReviewDiffHighlighter";
15import type { NativeReviewDiffViewProps } from "./nativeReviewDiffSurface";
16import type { NativeReviewDiffData } from "../review/nativeReviewDiffAdapter";
17
18const mocks = vi.hoisted(() => ({
19 registrationFailures: 0,
20 tokenAccepted: true as boolean | undefined,
21 tokenCompletion: null as Promise<boolean> | null,
22 onDebug: undefined as NativeReviewDiffViewProps["onDebug"],
23 autoViewport: false,
24 contentResetKeyLandsLate: false,
25 rows: vi.fn(),
26 tokens: vi.fn(),
27 highlight: vi.fn(),
28}));
29
30function RawView({
31 ref: nativeRef,
32 onDebug,
33 initialFileId,
34 contentResetKey = "",
35}: NativeReviewDiffViewProps & { ref: Ref<unknown> }) {
36 const [content, setContent] = useState({ resetKey: contentResetKey, rows: "" });
37 // Native setContentResetKey clears rows unless the key is unchanged.
38 const setContentResetKey = (resetKey: string) =>
39 setContent((current) => (current.resetKey === resetKey ? current : { resetKey, rows: "" }));
40 const [tokenRowIds, setTokenRowIds] = useState<string[]>([]);
41 // Android Fabric can apply a prop update after an AsyncFunction call made later.
42 if (!mocks.contentResetKeyLandsLate && content.resetKey !== contentResetKey) {
43 setContentResetKey(contentResetKey);
44 }
45 useLayoutEffect(() => {
46 mocks.onDebug = onDebug;
47 });
48 useImperativeHandle(nativeRef, () => ({
49 async setRowsJson(value: string, resetKey?: string) {
50 mocks.rows(value);
51 if (mocks.registrationFailures > 0) {
52 mocks.registrationFailures -= 1;
53 throw new Error("Unable to find the 'T3ReviewDiffSurface' view for this native tag");
54 }
55 if (resetKey !== undefined) setContentResetKey(resetKey);
56 setContent((current) => ({ ...current, rows: value }));
57 setContentResetKey(contentResetKey);
58 if (mocks.autoViewport) {
59 const decoded = JSON.parse(value) as NativeReviewDiffData["rows"];
60 onDebug?.({
61 nativeEvent: { message: "rows-decoded", rows: decoded.length },
62 } as unknown as Parameters<NonNullable<typeof onDebug>>[0]);
63 const index = decoded.findIndex(
64 (row) => row.kind === "file" && row.fileId === initialFileId,
65 );
66 onDebug?.({
67 nativeEvent: {
68 message: "visible-range",
69 firstRowIndex: Math.max(0, index),
70 lastRowIndex: Math.max(0, index) + 40,
71 totalRows: decoded.length,
72 },
73 } as unknown as Parameters<NonNullable<typeof onDebug>>[0]);
74 }
75 },
76 async scrollToFile() {},
77 async setTokensPatchJson(value: string) {
78 mocks.tokens(value);
79 const accepted = mocks.tokenCompletion ? await mocks.tokenCompletion : mocks.tokenAccepted;
80 if (accepted === true) {
81 const patch = JSON.parse(value);
82 setTokenRowIds((current) => [
83 ...new Set([...current, ...Object.keys(patch.tokensByRowId)]),
84 ]);
85 }
86 return accepted;
87 },
88 }));
89 return (
90 <div data-token-rows={tokenRowIds.join(",")}>
91 {content.rows ? "Rendered diff" : "Blank native surface"}
92 </div>
93 );
94}
95
96vi.mock("expo", () => ({ requireNativeView: () => RawView }));
97vi.mock("react-native", () => ({
98 View: ({ children }: { children?: ReactNode }) => <div>{children}</div>,
99}));
100vi.mock("../../components/ui/EmptyState", () => ({
101 EmptyState: ({
102 title,
103 actionLabel,
104 onAction,
105 }: {
106 title: string;
107 actionLabel: string;
108 onAction: () => void;
109 }) => (
110 <div>
111 {title}
112 <button onClick={onAction}>{actionLabel}</button>
113 </div>
114 ),
115}));
116vi.mock("./nativeReviewDiffHighlighter", () => ({
117 highlightNativeReviewDiffVisibleRows: mocks.highlight,
118}));
119vi.mock("@t3tools/client-runtime/state/runtime", () => ({
120 settlePromise: async (execute: () => Promise<unknown>) => {
121 try {
122 return AsyncResult.success(await execute());
123 } catch (error) {
124 return AsyncResult.failure(Cause.die(error));
125 }
126 },
127 squashAtomCommandFailure: () => "tokenization failed",
128}));
129vi.mock("../review/nativeReviewDiffAdapter", () => ({ createNativeReviewDiffTheme: () => ({}) }));
130vi.mock("../settings/appearance/useAppearanceCodeSurface", () => ({
131 useAppearanceCodeSurface: () => ({ nativeReviewDiffStyle: {} }),
132}));
133vi.mock("../settings/appearance/AppearancePreferencesProvider", () => ({
134 useAppearancePreferences: () => ({ themeAppearance: "light", themeId: "test" }),
135}));
136vi.mock("../../lib/useUniwindTheme", () => ({ useUniwindTheme: () => ({}) }));
137
138import { resolveNativeReviewDiffView } from "./nativeReviewDiffSurface";
139import { useNativeReviewDiffBridge } from "../review/useNativeReviewDiffBridge";
140import {
141 handlePullRequestDiffDebugEvent,
142 pullRequestDiffInitialPosition,
143} from "../pull-requests/pullRequestDiffDebug";
144
145function setup(integrated = false) {
146 vi.useFakeTimers();
147 (globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
148 mocks.registrationFailures = 0;
149 mocks.tokenAccepted = true;
150 mocks.tokenCompletion = null;
151 mocks.onDebug = undefined;
152 mocks.autoViewport = false;
153 mocks.contentResetKeyLandsLate = false;
154 mocks.rows.mockClear();
155 mocks.tokens.mockClear();
156 mocks.highlight
157 .mockReset()
158 .mockImplementation(async (input: HighlightNativeReviewDiffVisibleRowsInput) => {
159 const rowId = `r${input.firstRowIndex}`;
160 const tokensByRowId = input.alreadyHighlightedRowIds?.has(rowId)
161 ? {}
162 : { [rowId]: [{ content: "const", color: "#ff0000", fontStyle: null }] };
163 return {
164 rowCount: Object.keys(tokensByRowId).length,
165 durationMs: 0,
166 retryableRowIds: [],
167 tokensByRowId,
168 };
169 });
170 const frames = new Map<number, FrameRequestCallback>();
171 let nextFrame = 0;
172 const requestFrame = vi
173 .spyOn(globalThis, "requestAnimationFrame")
174 .mockImplementation((callback) => {
175 frames.set(++nextFrame, callback);
176 return nextFrame;
177 });
178 const cancelFrame = vi.spyOn(globalThis, "cancelAnimationFrame").mockImplementation((id) => {
179 if (id != null) frames.delete(id);
180 });
181 const errors = vi.spyOn(console, "error").mockImplementation(() => {});
182 const expo = Object.getOwnPropertyDescriptor(globalThis, "expo");
183 Object.defineProperty(globalThis, "expo", {
184 configurable: true,
185 value: { getViewConfig: () => ({}) },
186 });
187 const NativeDiff = resolveNativeReviewDiffView()!;
188 const container = document.createElement("div");
189 const root = createRoot(container);
190 let data: NativeReviewDiffData = {
191 rows: Array.from({ length: 1000 }, (_, index) =>
192 index === 999
193 ? { kind: "comment", id: `r${index}`, commentText: "Original comment" }
194 : index === 900
195 ? { kind: "file", id: `r${index}`, fileId: "last-file" }
196 : { kind: "line", id: `r${index}` },
197 ),
198 files: [],
199 additions: 0,
200 deletions: 0,
201 commentTargetsByRowId: new Map(),
202 rowIdByCommentLineId: new Map(),
203 };
204 const ids: string[] = [];
205 let collapsedFileIds: ReadonlyArray<string> = ids;
206 function PullRequestDiff({ targetFileId }: { targetFileId?: string }) {
207 const bridge = useNativeReviewDiffBridge({
208 threadKey: null,
209 sectionId: "pull-request:test:1:all",
210 diff: "test diff",
211 data,
212 collapsedFileIds,
213 viewedFileIds: ids,
214 selectedRowIds: ids,
215 canHighlight: true,
216 });
217 const nativeView = useRef(null);
218 const jumpStarted = useRef(true);
219 const onDebug: NonNullable<NativeReviewDiffViewProps["onDebug"]> = (event) =>
220 handlePullRequestDiffDebugEvent(event, {
221 rowCount: data.rows.length,
222 targetFileId,
223 focusIndex: -1,
224 isIos: true,
225 nativeView,
226 jumpStarted: () => jumpStarted.current,
227 setJumpStarted: (started) => {
228 jumpStarted.current = started;
229 },
230 loadMore: () => {},
231 onDebug: bridge.onDebug,
232 });
233 return (
234 <NativeDiff
235 {...bridge}
236 {...pullRequestDiffInitialPosition(targetFileId, -1)}
237 nativeViewRef={nativeView}
238 appearanceScheme="light"
239 rowHeight={20}
240 contentWidth={300}
241 onDebug={onDebug}
242 />
243 );
244 }
245 if (!integrated) {
246 act(() =>
247 root.render(
248 <NativeDiff
249 rowsJson="[]"
250 tokensPatchJson='{"tokensByRowId":{}}'
251 appearanceScheme="light"
252 themeJson="{}"
253 rowHeight={20}
254 contentWidth={300}
255 />,
256 ),
257 );
258 }
259 return {
260 container,
261 async mountPullRequest(targetFileId?: string) {
262 await act(async () => root.render(<PullRequestDiff targetFileId={targetFileId} />));
263 },
264 async showSection(contentResetKey: string) {
265 await act(async () =>
266 root.render(
267 <NativeDiff
268 rowsJson='[{"kind":"line","id":"r0"}]'
269 contentResetKey={contentResetKey}
270 appearanceScheme="light"
271 themeJson="{}"
272 rowHeight={20}
273 contentWidth={300}
274 />,
275 ),
276 );
277 },
278 async collapseFiles(fileIds: ReadonlyArray<string>) {
279 collapsedFileIds = fileIds;
280 await act(async () => root.render(<PullRequestDiff />));
281 },
282 async updateComment() {
283 data = {
284 ...data,
285 rows: data.rows.map((row) =>
286 row.kind === "comment" ? { ...row, commentText: "Updated comment" } : row,
287 ),
288 };
289 await act(async () => root.render(<PullRequestDiff />));
290 },
291 get tokenRows() {
292 return container.querySelector("[data-token-rows]")?.getAttribute("data-token-rows");
293 },
294 async jump(firstRowIndex: number, totalRows = 1000) {
295 await act(async () => {
296 mocks.onDebug?.({
297 nativeEvent: {
298 message: "visible-range",
299 firstRowIndex,
300 lastRowIndex: firstRowIndex + 40,
301 totalRows,
302 },
303 } as unknown as Parameters<NonNullable<NativeReviewDiffViewProps["onDebug"]>>[0]);
304 await vi.runOnlyPendingTimersAsync();
305 });
306 },
307 async deliverPayloads() {
308 const callbacks = [...frames.values()];
309 frames.clear();
310 await act(async () => {
311 for (const callback of callbacks) callback(0);
312 await vi.runOnlyPendingTimersAsync();
313 });
314 },
315 retry() {
316 const button = container.querySelector("button");
317 expect(button?.textContent).toBe("Retry diff");
318 act(() => button!.click());
319 },
320 decodeFailure() {
321 act(() =>
322 mocks.onDebug?.({
323 nativeEvent: { message: "rows-decode-failed", error: "Decode failed" },
324 } as unknown as Parameters<NonNullable<NativeReviewDiffViewProps["onDebug"]>>[0]),
325 );
326 },
327 [Symbol.dispose]() {
328 act(() => root.unmount());
329 requestFrame.mockRestore();
330 cancelFrame.mockRestore();
331 errors.mockRestore();
332 vi.useRealTimers();
333 if (expo) Object.defineProperty(globalThis, "expo", expo);
334 else Reflect.deleteProperty(globalThis, "expo");
335 },
336 };
337}
338
339it("retries transient native registration without replacing the diff with an error", async () => {
340 using screen = setup();
341 mocks.registrationFailures = 1;
342 await screen.deliverPayloads();
343 expect(screen.container.textContent).toBe("Blank native surface");
344 await screen.deliverPayloads();
345 expect(screen.container.textContent).toBe("Rendered diff");
346});
347
348it("renders identical rows after switching sections when the reset key prop lands late", async () => {
349 using screen = setup(true);
350 await screen.showSection("thread:git:changes");
351 await screen.deliverPayloads();
352 expect(screen.container.textContent).toBe("Rendered diff");
353
354 mocks.contentResetKeyLandsLate = true;
355 await screen.showSection("thread:git:working-tree");
356 await screen.deliverPayloads();
357 expect(screen.container.textContent).toBe("Rendered diff");
358});
359
360it.each([false, undefined])(
361 "keeps colors queued until native accepts them and recovers rejected patches (%s)",
362 async (rejected) => {
363 using screen = setup(true);
364 await screen.mountPullRequest();
365 let accept!: (accepted: boolean) => void;
366 mocks.tokenCompletion = new Promise((resolve) => {
367 accept = resolve;
368 });
369 mocks.tokens.mockClear();
370 await screen.jump(0);
371 await screen.deliverPayloads();
372 await screen.jump(400);
373 await screen.deliverPayloads();
374 expect(
375 mocks.tokens.mock.calls.map(([json]) => Object.keys(JSON.parse(json).tokensByRowId)),
376 ).toEqual([["r0"]]);
377 await act(async () => accept(true));
378
379 mocks.tokenCompletion = null;
380 mocks.tokenAccepted = rejected;
381 await screen.deliverPayloads();
382 expect(screen.tokenRows).toBe("r0");
383
384 mocks.tokenAccepted = true;
385 await screen.jump(800);
386 await screen.deliverPayloads();
387 expect(screen.tokenRows).toBe("r0,r800");
388 await screen.jump(400);
389 await screen.deliverPayloads();
390 expect(screen.tokenRows).toBe("r0,r800,r400");
391 },
392);
393
394it.each(["retry", "comment update"])(
395 "re-highlights accepted rows after a native row failure, PR %s, and viewport revisit",
396 async (recovery) => {
397 using screen = setup(true);
398 await screen.mountPullRequest();
399 mocks.tokens.mockClear();
400 await screen.jump(0);
401 await screen.deliverPayloads();
402 await screen.jump(400);
403 await screen.deliverPayloads();
404 expect(screen.tokenRows).toBe("r0,r400");
405
406 screen.decodeFailure();
407 expect(screen.container.textContent).toContain("Could not display diff");
408 if (recovery === "retry") await act(async () => screen.retry());
409 else await screen.updateComment();
410 await screen.deliverPayloads();
411 expect(screen.container.textContent).toBe("Rendered diff");
412 await screen.jump(800);
413 await screen.deliverPayloads();
414 await screen.jump(400);
415 await screen.deliverPayloads();
416 expect(screen.tokenRows?.split(",")).toContain("r400");
417 },
418);
419
420it("delivers the selected file first with a warm highlighter and no startup command", async () => {
421 using screen = setup(true);
422 mocks.autoViewport = true;
423 await screen.mountPullRequest("last-file");
424 await screen.deliverPayloads();
425 await screen.deliverPayloads();
426 expect(screen.tokenRows).toBe("r900");
427});
428
429it("recognizes registration races for the installed native view name", async () => {
430 const { isPendingNativeViewRegistration } = await import("./nativeReviewDiffSurface");
431
432 expect(
433 isPendingNativeViewRegistration(
434 new Error("Unable to find the 'T3ReviewDiffSurface' view for this native tag"),
435 ),
436 ).toBe(true);
437 expect(
438 isPendingNativeViewRegistration(
439 new Error("Unable to find the 'T3ReviewDiffView' view for this native tag"),
440 ),
441 ).toBe(false);
442 expect(
443 isPendingNativeViewRegistration(
444 new Error(
445 "Unable to find the class expo.modules.t3reviewdiff.T3ReviewDiffView view with tag 1150",
446 ),
447 ),
448 ).toBe(true);
449});
450
451it("cancels stale collapse work and highlights expansion without resetting accepted tokens", async () => {
452 using screen = setup(true);
453 await screen.mountPullRequest();
454 await screen.jump(0);
455 await screen.deliverPayloads();
456 expect(screen.tokenRows).toBe("r0");
457
458 const response = Promise.withResolvers<void>();
459 const highlight = mocks.highlight.getMockImplementation()!;
460 mocks.highlight.mockImplementation(async (input: HighlightNativeReviewDiffVisibleRowsInput) => {
461 if (input.firstRowIndex === 400) {
462 await response.promise;
463 if (input.collapsedFileIds?.has("last-file")) {
464 return { tokensByRowId: {}, rowCount: 0, retryableRowIds: [], durationMs: 0 };
465 }
466 }
467 return highlight(input);
468 });
469 await screen.jump(400);
470 await screen.collapseFiles(["last-file"]);
471 await act(async () => response.resolve());
472 await screen.deliverPayloads();
473 expect(screen.tokenRows).toBe("r0");
474
475 await screen.collapseFiles([]);
476 await screen.deliverPayloads();
477 expect(screen.tokenRows).toBe("r0,r400");
478 await screen.jump(0);
479 await screen.deliverPayloads();
480 expect(screen.tokenRows).toBe("r0,r400");
481});