Mario Zechner
611 lines
19 KiB
TypeScript
611 lines
19 KiB
TypeScript
import { symlink } from "node:fs/promises";
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import { applyPatch } from "diff";
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import { describe, expect, it } from "vitest";
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import { NodeExecutionEnv } from "../../src/harness/env/nodejs.ts";
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import { type BashToolDetails, createBashTool } from "../../src/harness/tools/bash.ts";
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import { createEditTool } from "../../src/harness/tools/edit.ts";
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import { createReadTool } from "../../src/harness/tools/read.ts";
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import { createWriteTool } from "../../src/harness/tools/write.ts";
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import {
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type ExecutionError,
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type FileError,
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getOrThrow,
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ok,
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type Result,
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type ShellExecOptions,
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} from "../../src/harness/types.ts";
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import { createTempDir } from "./session-test-utils.ts";
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function textOutput(result: { content: Array<{ type: string; text?: string }> }): string {
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return result.content.flatMap((part) => (part.type === "text" ? [part.text ?? ""] : [])).join("\n");
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}
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function createContext() {
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const env = new NodeExecutionEnv({ cwd: createTempDir() });
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return { env };
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}
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function deferred(): { promise: Promise<void>; resolve: () => void } {
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let resolve = () => {};
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const promise = new Promise<void>((resolvePromise) => {
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resolve = resolvePromise;
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});
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return { promise, resolve };
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}
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function delay(ms: number): Promise<void> {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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class SlowReadExecutionEnv extends NodeExecutionEnv {
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override async readTextFile(path: string, abortSignal?: AbortSignal): Promise<Result<string, FileError>> {
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await delay(20);
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return super.readTextFile(path, abortSignal);
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}
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}
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class BlockingWriteExecutionEnv extends NodeExecutionEnv {
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readonly firstWriteStarted = deferred();
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readonly finishFirstWrite = deferred();
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secondWriteStarted = false;
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override async writeFile(
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path: string,
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content: string | Uint8Array,
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abortSignal?: AbortSignal,
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): Promise<Result<void, FileError>> {
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if (content === "first\n") {
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this.firstWriteStarted.resolve();
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await this.finishFirstWrite.promise;
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} else if (content === "second\n") {
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this.secondWriteStarted = true;
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}
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return super.writeFile(path, content, abortSignal);
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}
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}
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class BlockingEditExecutionEnv extends NodeExecutionEnv {
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readonly firstEditWriteStarted = deferred();
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readonly finishFirstEditWrite = deferred();
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firstEditWriteSettled = false;
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secondEditWriteStarted = false;
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override async writeFile(
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path: string,
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content: string | Uint8Array,
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abortSignal?: AbortSignal,
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): Promise<Result<void, FileError>> {
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if (content === "ALPHA\nbeta\n") {
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this.firstEditWriteStarted.resolve();
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await this.finishFirstEditWrite.promise;
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const result = await super.writeFile(path, content);
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this.firstEditWriteSettled = true;
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return result;
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}
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if (content === "ALPHA\nBETA\n" || content === "alpha\nBETA\n") {
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this.secondEditWriteStarted = true;
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}
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return super.writeFile(path, content, abortSignal);
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}
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}
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class LateOutputExecutionEnv extends NodeExecutionEnv {
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override async exec(
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_command: string,
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options?: ShellExecOptions,
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): Promise<Result<{ stdout: string; stderr: string; exitCode: number }, ExecutionError>> {
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options?.onStdout?.("before\n");
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setTimeout(() => options?.onStdout?.("late\n"), 0);
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return ok({ stdout: "before\n", stderr: "", exitCode: 0 });
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}
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}
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function createTinyBmp(): Uint8Array {
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const bytes = new Uint8Array(58);
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const view = new DataView(bytes.buffer);
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bytes[0] = 0x42;
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bytes[1] = 0x4d;
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view.setUint32(2, bytes.length, true);
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view.setUint32(10, 54, true);
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view.setUint32(14, 40, true);
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view.setInt32(18, 1, true);
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view.setInt32(22, 1, true);
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view.setUint16(26, 1, true);
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view.setUint16(28, 24, true);
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view.setUint32(34, 4, true);
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return bytes;
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}
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describe("AgentHarness tools", () => {
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describe("read", () => {
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it("reads text with offsets, limits, and continuation notices", async () => {
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const context = createContext();
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getOrThrow(
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await context.env.writeFile(
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"test.txt",
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Array.from({ length: 100 }, (_, index) => `Line ${index + 1}`).join("\n"),
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),
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);
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const result = await createReadTool().execute(
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"read-1",
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{ path: "test.txt", offset: 41, limit: 20 },
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undefined,
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undefined,
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context,
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);
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const output = textOutput(result);
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expect(output).not.toContain("Line 40");
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expect(output).toContain("Line 41");
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expect(output).toContain("Line 60");
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expect(output).not.toContain("Line 61");
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expect(output).toContain("[40 more lines in file. Use offset=61 to continue.]");
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});
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it("truncates large text by line count", async () => {
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const context = createContext();
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getOrThrow(
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await context.env.writeFile(
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"large.txt",
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Array.from({ length: 2500 }, (_, index) => `Line ${index + 1}`).join("\n"),
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),
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);
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const result = await createReadTool().execute("read-2", { path: "large.txt" }, undefined, undefined, context);
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expect(textOutput(result)).toContain("[Showing lines 1-2000 of 2500. Use offset=2001 to continue.]");
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expect(result.details?.truncation).toMatchObject({
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truncated: true,
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truncatedBy: "lines",
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totalLines: 2500,
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outputLines: 2000,
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});
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});
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it("does not count a trailing newline as an extra line at the truncation limit", async () => {
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const context = createContext();
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getOrThrow(
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await context.env.writeFile("exact.txt", `${Array.from({ length: 2000 }, () => "x").join("\n")}\n`),
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);
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const result = await createReadTool().execute(
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"read-exact",
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{ path: "exact.txt" },
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undefined,
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undefined,
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context,
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);
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expect(result.details).toBeUndefined();
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expect(textOutput(result)).not.toContain("Use offset=");
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});
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it("rejects offsets beyond the file", async () => {
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const context = createContext();
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getOrThrow(await context.env.writeFile("short.txt", "one\ntwo\nthree"));
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await expect(
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createReadTool().execute("read-3", { path: "short.txt", offset: 100 }, undefined, undefined, context),
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).rejects.toThrow("Offset 100 is beyond end of file (3 lines total)");
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});
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it("detects supported images by content", async () => {
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const context = createContext();
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const png = Uint8Array.from(
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Buffer.from(
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"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4nGNgYGD4DwABBAEAX+XDSwAAAABJRU5ErkJggg==",
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"base64",
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),
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);
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getOrThrow(await context.env.writeFile("image.txt", png));
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const result = await createReadTool().execute("read-4", { path: "image.txt" }, undefined, undefined, context);
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expect(textOutput(result)).toContain("Read image file [image/png]");
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expect(result.content).toContainEqual({
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type: "image",
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data: Buffer.from(png).toString("base64"),
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mimeType: "image/png",
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});
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});
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it("delegates image conversion and resizing to an injected processor", async () => {
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const context = createContext();
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const bmp = createTinyBmp();
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getOrThrow(await context.env.writeFile("image.bmp", bmp));
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let received: { bytes: Uint8Array; mimeType: string; autoResizeImages: boolean } | undefined;
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const tool = createReadTool({
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autoResizeImages: false,
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imageProcessor: async (bytes, mimeType, options) => {
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received = { bytes, mimeType, autoResizeImages: options.autoResizeImages };
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return {
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ok: true,
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data: "converted",
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mimeType: "image/png",
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hints: ["[Image converted from image/bmp to image/png.]"],
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};
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},
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});
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const result = await tool.execute("read-bmp", { path: "image.bmp" }, undefined, undefined, context);
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expect(received).toMatchObject({ mimeType: "image/bmp", autoResizeImages: false });
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expect(Array.from(received?.bytes ?? [])).toEqual(Array.from(bmp));
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expect(textOutput(result)).toContain("[Image converted from image/bmp to image/png.]");
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expect(result.content).toContainEqual({ type: "image", data: "converted", mimeType: "image/png" });
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});
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});
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describe("write", () => {
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it("writes files and creates parent directories", async () => {
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const context = createContext();
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const result = await createWriteTool().execute(
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"write-1",
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{ path: "nested/dir/file.txt", content: "hello" },
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undefined,
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undefined,
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context,
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);
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expect(textOutput(result)).toBe("Successfully wrote 5 bytes to nested/dir/file.txt");
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expect(getOrThrow(await context.env.readTextFile("nested/dir/file.txt"))).toBe("hello");
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});
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it("keeps the mutation queue locked until an aborted write settles", async () => {
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const env = new BlockingWriteExecutionEnv({ cwd: createTempDir() });
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const tool = createWriteTool();
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const controller = new AbortController();
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const firstWrite = tool.execute(
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"write-first",
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{ path: "file.txt", content: "first\n" },
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controller.signal,
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undefined,
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{
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env,
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},
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);
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await env.firstWriteStarted.promise;
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controller.abort();
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const secondWrite = tool.execute(
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"write-second",
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{ path: "file.txt", content: "second\n" },
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undefined,
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undefined,
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{ env },
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);
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await delay(20);
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expect(env.secondWriteStarted).toBe(false);
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env.finishFirstWrite.resolve();
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await expect(firstWrite).rejects.toThrow();
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await secondWrite;
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expect(getOrThrow(await env.readTextFile("file.txt"))).toBe("second\n");
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});
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});
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describe("edit", () => {
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it("applies disjoint edits and returns both diff formats", async () => {
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const context = createContext();
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const original = "alpha\nbeta\ngamma\ndelta\n";
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getOrThrow(await context.env.writeFile("edit.txt", original));
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const result = await createEditTool().execute(
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"edit-1",
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{
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path: "edit.txt",
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edits: [
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{ oldText: "alpha\n", newText: "ALPHA\n" },
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{ oldText: "gamma\n", newText: "GAMMA\n" },
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],
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},
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undefined,
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undefined,
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context,
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);
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expect(textOutput(result)).toBe("Successfully replaced 2 block(s) in edit.txt.");
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expect(result.details?.diff).toContain("ALPHA");
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expect(result.details?.diff).toContain("GAMMA");
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expect(applyPatch(original, result.details?.patch ?? "")).toBe("ALPHA\nbeta\nGAMMA\ndelta\n");
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expect(getOrThrow(await context.env.readTextFile("edit.txt"))).toBe("ALPHA\nbeta\nGAMMA\ndelta\n");
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});
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it("matches all edits against the original and rejects overlaps", async () => {
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const context = createContext();
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getOrThrow(await context.env.writeFile("edit.txt", "one\ntwo\nthree\n"));
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await expect(
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createEditTool().execute(
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"edit-2",
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{
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path: "edit.txt",
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edits: [
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{ oldText: "one\ntwo\n", newText: "ONE\nTWO\n" },
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{ oldText: "two\nthree\n", newText: "TWO\nTHREE\n" },
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],
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},
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undefined,
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undefined,
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context,
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),
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).rejects.toThrow(/overlap/);
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expect(getOrThrow(await context.env.readTextFile("edit.txt"))).toBe("one\ntwo\nthree\n");
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});
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it("rejects missing and duplicate target text", async () => {
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const context = createContext();
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getOrThrow(await context.env.writeFile("edit.txt", "foo foo foo"));
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const tool = createEditTool();
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await expect(
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tool.execute(
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"edit-3",
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{ path: "edit.txt", edits: [{ oldText: "bar", newText: "baz" }] },
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undefined,
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undefined,
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context,
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),
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).rejects.toThrow(/Could not find the exact text/);
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await expect(
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tool.execute(
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"edit-4",
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{ path: "edit.txt", edits: [{ oldText: "foo", newText: "bar" }] },
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undefined,
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undefined,
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context,
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),
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).rejects.toThrow(/Found 3 occurrences/);
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});
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it("keeps the mutation queue locked until an aborted edit write settles", async () => {
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const env = new BlockingEditExecutionEnv({ cwd: createTempDir() });
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getOrThrow(await env.writeFile("file.txt", "alpha\nbeta\n"));
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const tool = createEditTool();
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const controller = new AbortController();
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const firstEdit = tool.execute(
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"edit-first",
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{ path: "file.txt", edits: [{ oldText: "alpha", newText: "ALPHA" }] },
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controller.signal,
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undefined,
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{ env },
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);
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await env.firstEditWriteStarted.promise;
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controller.abort();
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const secondEdit = tool.execute(
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"edit-second",
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{ path: "file.txt", edits: [{ oldText: "beta", newText: "BETA" }] },
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undefined,
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undefined,
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{ env },
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);
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await delay(20);
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expect(env.secondEditWriteStarted).toBe(false);
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env.finishFirstEditWrite.resolve();
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await expect(firstEdit).rejects.toThrow("Operation aborted");
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await secondEdit;
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expect(env.firstEditWriteSettled).toBe(true);
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expect(getOrThrow(await env.readTextFile("file.txt"))).toBe("ALPHA\nBETA\n");
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});
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it("serializes concurrent edits through canonical and symlink paths", async () => {
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const env = new SlowReadExecutionEnv({ cwd: createTempDir() });
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getOrThrow(await env.writeFile("target.txt", "alpha\nbeta\ngamma\n"));
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await symlink("target.txt", `${env.cwd}/link.txt`);
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const tool = createEditTool();
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await Promise.all([
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tool.execute(
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"edit-target",
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{ path: "target.txt", edits: [{ oldText: "alpha", newText: "ALPHA" }] },
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undefined,
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undefined,
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{ env },
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),
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tool.execute(
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"edit-link",
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{ path: "link.txt", edits: [{ oldText: "beta", newText: "BETA" }] },
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undefined,
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undefined,
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{ env },
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),
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]);
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expect(getOrThrow(await env.readTextFile("target.txt"))).toBe("ALPHA\nBETA\ngamma\n");
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});
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it("edits regular files through symlinks", async () => {
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const context = createContext();
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getOrThrow(await context.env.writeFile("target.txt", "before\n"));
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await symlink("target.txt", `${context.env.cwd}/link.txt`);
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await createEditTool().execute(
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"edit-symlink",
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{ path: "link.txt", edits: [{ oldText: "before", newText: "after" }] },
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undefined,
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undefined,
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context,
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);
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expect(getOrThrow(await context.env.readTextFile("target.txt"))).toBe("after\n");
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});
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it("preserves BOM and CRLF line endings", async () => {
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const context = createContext();
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getOrThrow(await context.env.writeFile("edit.txt", "\uFEFFone\r\ntwo\r\n"));
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await createEditTool().execute(
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"edit-5",
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{ path: "edit.txt", edits: [{ oldText: "two", newText: "TWO" }] },
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undefined,
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undefined,
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context,
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);
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expect(getOrThrow(await context.env.readTextFile("edit.txt"))).toBe("\uFEFFone\r\nTWO\r\n");
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});
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});
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describe("bash", () => {
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it("executes commands and combines stdout and stderr", async () => {
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const context = createContext();
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const result = await createBashTool().execute(
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"bash-1",
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{ command: "printf out; printf err >&2" },
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undefined,
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undefined,
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context,
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);
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expect(textOutput(result)).toContain("out");
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expect(textOutput(result)).toContain("err");
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});
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it("reports nonzero exits and timeouts", async () => {
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const context = createContext();
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const tool = createBashTool();
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await expect(
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tool.execute("bash-2", { command: "printf failed; exit 7" }, undefined, undefined, context),
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).rejects.toThrow(/failed[\s\S]*Command exited with code 7/);
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await expect(
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tool.execute("bash-3", { command: "sleep 2", timeout: 0.01 }, undefined, undefined, context),
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).rejects.toThrow(/Command timed out after 0.01 seconds/);
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});
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it("preserves truncated output when a command times out", async () => {
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const context = createContext();
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let error: unknown;
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try {
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await createBashTool().execute(
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"bash-timeout-output",
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{
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command: "i=1; while [ $i -le 3000 ]; do echo line-$i; i=$((i + 1)); done; sleep 2",
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timeout: 0.05,
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},
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undefined,
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undefined,
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context,
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);
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} catch (cause) {
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error = cause;
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}
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expect(error).toBeInstanceOf(Error);
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const message = (error as Error).message;
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expect(message).toContain("Command timed out after 0.05 seconds");
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const fullOutputPath = message.match(/Full output: ([^\]\n]+)/)?.[1];
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expect(fullOutputPath).toBeDefined();
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const fullOutput = getOrThrow(await context.env.readTextFile(fullOutputPath!));
|
|
expect(fullOutput).toContain("line-1\nline-2");
|
|
expect(fullOutput).toContain("line-2999\nline-3000");
|
|
});
|
|
|
|
it("ignores output callbacks after execution settles", async () => {
|
|
const env = new LateOutputExecutionEnv({ cwd: createTempDir() });
|
|
const updates: string[] = [];
|
|
const result = await createBashTool().execute(
|
|
"bash-late",
|
|
{ command: "late" },
|
|
undefined,
|
|
(update) => updates.push(textOutput(update)),
|
|
{ env },
|
|
);
|
|
await new Promise((resolve) => setTimeout(resolve, 20));
|
|
|
|
expect(textOutput(result)).toBe("before\n");
|
|
expect(updates.some((update) => update.includes("late"))).toBe(false);
|
|
});
|
|
|
|
it("reports the total size of an oversized final line", async () => {
|
|
const context = createContext();
|
|
const result = await createBashTool().execute(
|
|
"bash-long-line",
|
|
{ command: "printf '%060000d' 0" },
|
|
undefined,
|
|
undefined,
|
|
context,
|
|
);
|
|
|
|
expect(textOutput(result)).toMatch(/Showing last 50\.0KB of line 1 \(line is 58\.6KB\)\. Full output:/);
|
|
});
|
|
|
|
it("prepares command, cwd, and an explicit environment with the turn context", async () => {
|
|
const env = new NodeExecutionEnv({
|
|
cwd: createTempDir(),
|
|
shellEnv: { PI_BASH_PREPARE_INHERITED: "inherited" },
|
|
});
|
|
getOrThrow(await env.createDir("workspace"));
|
|
const context = { env, workspace: `${env.cwd}/workspace` };
|
|
const controller = new AbortController();
|
|
let receivedContext: typeof context | undefined;
|
|
let receivedSignal: AbortSignal | undefined;
|
|
const tool = createBashTool<typeof context>({
|
|
commandPrefix: "prefix=ready",
|
|
prepare: async (execution, turnContext, signal) => {
|
|
receivedContext = turnContext;
|
|
receivedSignal = signal;
|
|
execution.cwd = turnContext.workspace;
|
|
execution.env = { PI_BASH_PREPARE_EXPLICIT: "explicit" };
|
|
execution.inheritEnv = false;
|
|
execution.command += `\nprintf '%s:%s:%s:%s' "$prefix" "\${PI_BASH_PREPARE_INHERITED-}" "$PI_BASH_PREPARE_EXPLICIT" "$PWD"`;
|
|
},
|
|
});
|
|
|
|
const result = await tool.execute("bash-prepare", { command: ":" }, controller.signal, undefined, context);
|
|
|
|
expect(receivedContext).toBe(context);
|
|
expect(receivedSignal).toBe(controller.signal);
|
|
expect(textOutput(result)).toBe(`ready::explicit:${getOrThrow(await env.canonicalPath(context.workspace))}`);
|
|
});
|
|
|
|
it("supports command prefixes", async () => {
|
|
const context = createContext();
|
|
const result = await createBashTool({ commandPrefix: "value=hello" }).execute(
|
|
"bash-4",
|
|
{ command: "printf $value" },
|
|
undefined,
|
|
undefined,
|
|
context,
|
|
);
|
|
|
|
expect(textOutput(result)).toBe("hello");
|
|
});
|
|
|
|
it("coalesces updates and persists truncated full output", async () => {
|
|
const context = createContext();
|
|
const updates: Array<{
|
|
content: Array<{ type: "text"; text: string } | { type: "image"; data: string; mimeType: string }>;
|
|
details?: BashToolDetails;
|
|
}> = [];
|
|
const result = await createBashTool().execute(
|
|
"bash-5",
|
|
{ command: "i=1; while [ $i -le 3000 ]; do echo line-$i; i=$((i + 1)); done" },
|
|
undefined,
|
|
(update) => updates.push(update),
|
|
context,
|
|
);
|
|
|
|
expect(updates.length).toBeLessThan(25);
|
|
expect(result.details?.truncation).toMatchObject({
|
|
truncated: true,
|
|
truncatedBy: "lines",
|
|
totalLines: 3000,
|
|
outputLines: 2000,
|
|
});
|
|
expect(textOutput(result)).toContain("line-3000");
|
|
expect(result.details?.fullOutputPath).toBeDefined();
|
|
const finalUpdate = updates.at(-1);
|
|
expect(finalUpdate ? textOutput(finalUpdate) : "").toContain("line-3000");
|
|
expect(finalUpdate?.details).toMatchObject({
|
|
truncation: { totalLines: 3000, totalBytes: expect.any(Number) },
|
|
fullOutputPath: result.details?.fullOutputPath,
|
|
});
|
|
const fullOutput = getOrThrow(await context.env.readTextFile(result.details!.fullOutputPath!));
|
|
expect(fullOutput).toContain("line-1\nline-2");
|
|
expect(fullOutput).toContain("line-2999\nline-3000");
|
|
});
|
|
});
|
|
});
|