import { describe, expect, it } from "vite-plus/test"; import type { NativeReviewDiffRow } from "./nativeReviewDiffSurface";import type { NativeReviewDiffFile } from "./nativeReviewDiffTypes";import { highlightNativeReviewDiffVisibleRows } from "./nativeReviewDiffHighlighter"; const TYPESCRIPT_FILE: NativeReviewDiffFile = {  id: "file-1",  path: "example.ts",  language: "typescript",  additions: 0,  deletions: 0,}; function makeLine(  input: Pick<NativeReviewDiffRow, "id" | "content" | "change" | "oldLineNumber" | "newLineNumber">,): NativeReviewDiffRow {  return {    kind: "line",    fileId: TYPESCRIPT_FILE.id,    ...input,  };} function makeHunk(id: string): NativeReviewDiffRow {  return {    kind: "hunk",    id,    fileId: TYPESCRIPT_FILE.id,    text: "@@",  };} function highlight(  rows: ReadonlyArray<NativeReviewDiffRow>,  alreadyHighlightedRowIds?: ReadonlySet<string>,) {  return highlightNativeReviewDiffVisibleRows({    rows,    files: [TYPESCRIPT_FILE],    scheme: "dark",    engine: "javascript",    firstRowIndex: 0,    lastRowIndex: rows.length - 1,    overscanRows: 0,    maxRows: 100,    alreadyHighlightedRowIds,  });} describe("highlightNativeReviewDiffVisibleRows", () => {  it("does not carry grammar state across hunk boundaries", async () => {    const exportRow = makeLine({      id: "export-row",      content: "export async function run() {}",      change: "add",      oldLineNumber: null,      newLineNumber: 100,    });    const rows = [      makeHunk("hunk-1"),      makeLine({        id: "import-open",        content: "import {",        change: "context",        oldLineNumber: 1,        newLineNumber: 1,      }),      makeLine({        id: "import-entry",        content: "  Model,",        change: "context",        oldLineNumber: 2,        newLineNumber: 2,      }),      makeHunk("hunk-2"),      exportRow,    ];     const [highlighted, standalone] = await Promise.all([      highlight(rows),      highlight([makeHunk("standalone-hunk"), exportRow]),    ]);     expect(highlighted.tokensByRowId[exportRow.id]).toEqual(standalone.tokensByRowId[exportRow.id]);  });   it("keeps grammar state across inline comment rows", async () => {    const openingRow = makeLine({      id: "template-open",      content: "const message = `open",      change: "add",      oldLineNumber: null,      newLineNumber: 1,    });    const closingRow = makeLine({      id: "template-close",      content: "closed`;",      change: "add",      oldLineNumber: null,      newLineNumber: 2,    });    const trailingRow = makeLine({      id: "trailing-row",      content: "export const answer = 42;",      change: "add",      oldLineNumber: null,      newLineNumber: 3,    });    const commentRow: NativeReviewDiffRow = {      kind: "comment",      id: "comment-1",      fileId: TYPESCRIPT_FILE.id,      commentText: "Review note",    };     const [withComment, contiguous] = await Promise.all([      highlight([openingRow, commentRow, closingRow, trailingRow]),      highlight([openingRow, closingRow, trailingRow]),    ]);     expect(withComment.tokensByRowId).toEqual(contiguous.tokensByRowId);  });   it("does not join unhighlighted rows across cached gaps", async () => {    const trailingRow = makeLine({      id: "trailing-row",      content: "export const answer = 42;",      change: "add",      oldLineNumber: null,      newLineNumber: 3,    });    const rows = [      makeLine({        id: "template-open",        content: "const message = `open",        change: "add",        oldLineNumber: null,        newLineNumber: 1,      }),      makeLine({        id: "template-close",        content: "closed`;",        change: "add",        oldLineNumber: null,        newLineNumber: 2,      }),      trailingRow,    ];     const [highlighted, standalone] = await Promise.all([      highlight(rows, new Set(["template-close"])),      highlight([trailingRow]),    ]);     expect(highlighted.tokensByRowId[trailingRow.id]).toEqual(      standalone.tokensByRowId[trailingRow.id],    );  });   it("keeps deletion grammar state out of addition rows", async () => {    const additionRow = makeLine({      id: "addition-row",      content: "export const answer = 42;",      change: "add",      oldLineNumber: null,      newLineNumber: 1,    });    const rows = [      makeLine({        id: "deletion-row",        content: "const removed = `open",        change: "delete",        oldLineNumber: 1,        newLineNumber: null,      }),      additionRow,    ];     const [highlighted, standalone] = await Promise.all([      highlight(rows),      highlight([additionRow]),    ]);     expect(highlighted.tokensByRowId[additionRow.id]).toEqual(      standalone.tokensByRowId[additionRow.id],    );  });});