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import { fireEvent, render, screen, waitFor } from "@testing-library/svelte";
import { describe, expect, it, vi } from "vitest";
import { createTextFileClient } from "../adapter/text-file";
import Markdown from "./Markdown.svelte";
const json = (data: unknown, status = 200) => new Response(JSON.stringify(data), { status });
const context = { conversationId: "c", cwd: "/project", computerId: null };
function fixture(text: string, format: "markdown" | "text" = "markdown") {
const fetcher = vi.fn<typeof fetch>().mockImplementation(async (url) =>
json(
String(url).endsWith("-context")
? context
: {
path: "/project/notes/plan.md",
text,
format,
bytes: new TextEncoder().encode(text).length,
maxBytes: 262144,
},
),
);
return { fetcher, client: createTextFileClient("/api", "c", fetcher) };
}
describe("rendered live text-file embeds", () => {
it("renders Markdown head/tail source lines and expands/collapses the full sanitized document", async () => {
const text = Array.from({ length: 20 }, (_, i) => `## Line ${i + 1}`).join("\n");
const { client, fetcher } = fixture(text);
const { unmount } = render(Markdown, {
text: "Summary\n\n[Plan](text-file:notes/plan.md)",
textFiles: client,
});
expect(screen.getByRole("status")).toHaveTextContent("Loading text file");
await screen.findByRole("heading", { name: "Line 1" });
expect(screen.getByRole("heading", { name: "Line 6" })).toBeInTheDocument();
expect(screen.getByRole("heading", { name: "Line 15" })).toBeInTheDocument();
expect(screen.getByRole("heading", { name: "Line 20" })).toBeInTheDocument();
expect(screen.queryByRole("heading", { name: "Line 10" })).not.toBeInTheDocument();
expect(screen.getByText(/8 source lines omitted/)).toBeInTheDocument();
await fireEvent.click(screen.getByRole("button", { name: "Expand document" }));
expect(screen.getByRole("heading", { name: "Line 10" })).toBeInTheDocument();
expect(screen.getByRole("button", { name: "Collapse document" })).toHaveAttribute(
"aria-expanded",
"true",
);
await fireEvent.click(screen.getByRole("button", { name: "Collapse document" }));
expect(screen.queryByRole("heading", { name: "Line 10" })).not.toBeInTheDocument();
expect(fetcher).toHaveBeenCalledTimes(2);
unmount();
client.dispose();
});
it("short documents don't duplicate; nested embeds are inert; HTML stays sanitized and remote images require consent", async () => {
const text =
'# Short\n\n[nested](text-file:secret.md)\n\n<script>alert(1)</script><img src="https://evil.example/a.png" onerror="alert(1)">\n\n[bad](javascript:alert(1))';
const { client, fetcher } = fixture(text);
const { container, unmount } = render(Markdown, {
text: "[Plan](text-file:notes/plan.md)",
textFiles: client,
});
await screen.findByRole("heading", { name: "Short" });
expect(screen.getAllByRole("heading", { name: "Short" })).toHaveLength(1);
expect(
container.querySelector("script,[onerror],a[href^='javascript:'],a[href^='text-file:'],img"),
).toBeNull();
expect(container.textContent).toContain("nested");
await fireEvent.click(screen.getByRole("button", { name: "Expand document" }));
await fireEvent.click(screen.getByRole("button", { name: "Load image from evil.example" }));
expect(container.querySelector("img")?.getAttribute("src")).toBe("https://evil.example/a.png");
expect(fetcher).toHaveBeenCalledTimes(2);
unmount();
client.dispose();
});
it("does not render omitted images before expansion; restores tail fence context", async () => {
const text =
"# Head\n\n1\n2\n3\n4\n\n```js\n" +
Array.from({ length: 20 }, () => 'const x = "safe";').join("\n") +
"\n```";
const { client } = fixture(text);
const { container, unmount } = render(Markdown, {
text: "[Plan](text-file:a.md)",
textFiles: client,
});
await screen.findByRole("heading", { name: "Head" });
expect(
screen.queryByRole("button", { name: "Load image from hidden.example" }),
).not.toBeInTheDocument();
expect(container.querySelector("code.language-js")).not.toBeNull();
await fireEvent.click(screen.getByRole("button", { name: "Expand document" }));
expect(
screen.getByRole("button", { name: "Load image from hidden.example" }),
).toBeInTheDocument();
expect(container.querySelector("img")).toBeNull();
unmount();
client.dispose();
});
it("renders plain text with safe whitespace and no Markdown/HTML interpretation", async () => {
const { client } = fixture("# heading\n <script>bad</script>\n\tlast", "text");
const { container, unmount } = render(Markdown, {
text: "[Text](text-file:a.txt)",
textFiles: client,
});
await waitFor(() =>
expect(container.querySelector("pre code")?.textContent).toBe(
"# heading\n <script>bad</script>\n\tlast",
),
);
expect(container.querySelector("script,h1")).toBeNull();
unmount();
client.dispose();
});
it("empty, error, Retry and Refresh states reread rather than insert file text into source", async () => {
const { client, fetcher } = fixture("");
fetcher
.mockResolvedValueOnce(json(context))
.mockResolvedValueOnce(json({ error: "Missing file" }, 404));
const { unmount } = render(Markdown, { text: "[Plan](text-file:a.md)", textFiles: client });
expect(await screen.findByRole("alert")).toHaveTextContent("Missing file");
await fireEvent.click(screen.getByRole("button", { name: "Retry" }));
await screen.findByText("Empty file");
await fireEvent.click(screen.getByRole("button", { name: "Refresh" }));
await screen.findByText("Empty file");
expect(fetcher).toHaveBeenCalledTimes(6);
unmount();
client.dispose();
});
it("never fetches without opt-in, for incomplete streaming, code or forged raw HTML", async () => {
const { client, fetcher } = fixture("body");
const { rerender, unmount } = render(Markdown, { text: "[Plan](text-file:a.md)" });
await rerender({
text: '<div data-text-file="secret.md"><button data-path="secret.md">Fake</button></div>\n\n`[Plan](text-file:a.md)`\n\n```\n[Plan](text-file:a.md)\n```',
textFiles: client,
});
await rerender({ text: "[Plan](text-file:a.md)", streaming: true, textFiles: client });
expect(fetcher).not.toHaveBeenCalled();
await rerender({ text: "[Plan](text-file:a.md)\n\ntail", streaming: true, textFiles: client });
await screen.findByText("body");
await rerender({
text: "[Plan](text-file:a.md)\n\ntail growing",
streaming: true,
textFiles: client,
});
await rerender({
text: "[Plan](text-file:a.md)\n\ntail growing",
streaming: false,
textFiles: client,
});
expect(fetcher).toHaveBeenCalledTimes(2);
unmount();
client.dispose();
});
it("ignores old conversation results after the context-bound client changes", async () => {
let finish: (r: Response) => void = () => {};
const old = fixture("old");
old.fetcher.mockResolvedValueOnce(json(context)).mockImplementationOnce(
() =>
new Promise((r) => {
finish = r;
}),
);
const next = fixture("new");
const { rerender, unmount } = render(Markdown, {
text: "[Plan](text-file:a.md)",
textFiles: old.client,
});
await waitFor(() => expect(old.fetcher).toHaveBeenCalledTimes(2));
await rerender({ text: "[Plan](text-file:a.md)", textFiles: next.client });
await screen.findByText("new");
finish(
json({ path: "/old/a.md", text: "old", format: "markdown", bytes: 3, maxBytes: 262144 }),
);
await waitFor(() => expect(screen.queryByText("old")).not.toBeInTheDocument());
expect(old.fetcher.mock.calls[1]?.[1]?.signal?.aborted).toBe(true);
unmount();
old.client.dispose();
next.client.dispose();
});
it("deduplicates repeated blocks without replacing them on per-token appends", async () => {
const { client, fetcher } = fixture("# shared");
const text = "[one](text-file:a.md)\n\n[two](text-file:a.md)\n\n";
const { rerender, unmount } = render(Markdown, { text, streaming: true, textFiles: client });
await waitFor(() => expect(screen.getAllByRole("heading", { name: "shared" })).toHaveLength(2));
await fireEvent.click(
screen.getAllByRole("button", { name: "Expand document" })[0] as HTMLElement,
);
await rerender({ text: `${text}growing`, streaming: true, textFiles: client });
expect(screen.getByRole("button", { name: "Collapse document" })).toBeInTheDocument();
expect(fetcher).toHaveBeenCalledTimes(2);
unmount();
client.dispose();
});
});
|
