505 lines
18 KiB
TypeScript
505 lines
18 KiB
TypeScript
import { describe, expect, test } from "bun:test"
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import path from "path"
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import { ReadTool } from "../../src/tool/read"
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import { Instance } from "../../src/project/instance"
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import { Filesystem } from "../../src/util/filesystem"
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import { tmpdir } from "../fixture/fixture"
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import { PermissionNext } from "../../src/permission/next"
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import { Agent } from "../../src/agent/agent"
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const FIXTURES_DIR = path.join(import.meta.dir, "fixtures")
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const ctx = {
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sessionID: "test",
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messageID: "",
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callID: "",
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agent: "build",
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abort: AbortSignal.any([]),
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messages: [],
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metadata: () => {},
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ask: async () => {},
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}
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describe("tool.read external_directory permission", () => {
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test("allows reading absolute path inside project directory", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "test.txt"), "hello world")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "test.txt") }, ctx)
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expect(result.output).toContain("hello world")
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},
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})
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})
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test("allows reading file in subdirectory inside project directory", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "subdir", "test.txt"), "nested content")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "subdir", "test.txt") }, ctx)
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expect(result.output).toContain("nested content")
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},
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})
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})
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test("asks for external_directory permission when reading absolute path outside project", async () => {
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await using outerTmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "secret.txt"), "secret data")
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},
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})
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await using tmp = await tmpdir({ git: true })
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const requests: Array<Omit<PermissionNext.Request, "id" | "sessionID" | "tool">> = []
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const testCtx = {
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...ctx,
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ask: async (req: Omit<PermissionNext.Request, "id" | "sessionID" | "tool">) => {
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requests.push(req)
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},
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}
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await read.execute({ filePath: path.join(outerTmp.path, "secret.txt") }, testCtx)
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const extDirReq = requests.find((r) => r.permission === "external_directory")
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expect(extDirReq).toBeDefined()
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expect(extDirReq!.patterns.some((p) => p.includes(outerTmp.path.replaceAll("\\", "/")))).toBe(true)
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},
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})
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})
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test("asks for directory-scoped external_directory permission when reading external directory", async () => {
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await using outerTmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "external", "a.txt"), "a")
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},
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})
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await using tmp = await tmpdir({ git: true })
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const requests: Array<Omit<PermissionNext.Request, "id" | "sessionID" | "tool">> = []
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const testCtx = {
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...ctx,
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ask: async (req: Omit<PermissionNext.Request, "id" | "sessionID" | "tool">) => {
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requests.push(req)
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},
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}
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await read.execute({ filePath: path.join(outerTmp.path, "external") }, testCtx)
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const extDirReq = requests.find((r) => r.permission === "external_directory")
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expect(extDirReq).toBeDefined()
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expect(extDirReq!.patterns).toContain(path.join(outerTmp.path, "external", "*").replaceAll("\\", "/"))
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},
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})
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})
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test("asks for external_directory permission when reading relative path outside project", async () => {
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await using tmp = await tmpdir({ git: true })
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const requests: Array<Omit<PermissionNext.Request, "id" | "sessionID" | "tool">> = []
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const testCtx = {
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...ctx,
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ask: async (req: Omit<PermissionNext.Request, "id" | "sessionID" | "tool">) => {
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requests.push(req)
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},
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}
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// This will fail because file doesn't exist, but we can check if permission was asked
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await read.execute({ filePath: "../outside.txt" }, testCtx).catch(() => {})
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const extDirReq = requests.find((r) => r.permission === "external_directory")
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expect(extDirReq).toBeDefined()
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},
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})
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})
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test("does not ask for external_directory permission when reading inside project", async () => {
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await using tmp = await tmpdir({
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git: true,
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init: async (dir) => {
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await Bun.write(path.join(dir, "internal.txt"), "internal content")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const requests: Array<Omit<PermissionNext.Request, "id" | "sessionID" | "tool">> = []
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const testCtx = {
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...ctx,
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ask: async (req: Omit<PermissionNext.Request, "id" | "sessionID" | "tool">) => {
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requests.push(req)
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},
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}
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await read.execute({ filePath: path.join(tmp.path, "internal.txt") }, testCtx)
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const extDirReq = requests.find((r) => r.permission === "external_directory")
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expect(extDirReq).toBeUndefined()
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},
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})
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})
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})
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describe("tool.read env file permissions", () => {
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const cases: [string, boolean][] = [
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[".env", true],
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[".env.local", true],
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[".env.production", true],
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[".env.development.local", true],
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[".env.example", false],
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[".envrc", false],
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["environment.ts", false],
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]
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describe.each(["build", "plan"])("agent=%s", (agentName) => {
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test.each(cases)("%s asks=%s", async (filename, shouldAsk) => {
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await using tmp = await tmpdir({
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init: (dir) => Bun.write(path.join(dir, filename), "content"),
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const agent = await Agent.get(agentName)
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let askedForEnv = false
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const ctxWithPermissions = {
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...ctx,
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ask: async (req: Omit<PermissionNext.Request, "id" | "sessionID" | "tool">) => {
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for (const pattern of req.patterns) {
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const rule = PermissionNext.evaluate(req.permission, pattern, agent.permission)
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if (rule.action === "ask" && req.permission === "read") {
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askedForEnv = true
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}
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if (rule.action === "deny") {
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throw new PermissionNext.DeniedError(agent.permission)
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}
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}
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},
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}
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const read = await ReadTool.init()
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await read.execute({ filePath: path.join(tmp.path, filename) }, ctxWithPermissions)
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expect(askedForEnv).toBe(shouldAsk)
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},
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})
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})
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})
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})
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describe("tool.read truncation", () => {
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test("truncates large file by bytes and sets truncated metadata", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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const base = await Filesystem.readText(path.join(FIXTURES_DIR, "models-api.json"))
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const target = 60 * 1024
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const content = base.length >= target ? base : base.repeat(Math.ceil(target / base.length))
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await Filesystem.write(path.join(dir, "large.json"), content)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "large.json") }, ctx)
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expect(result.metadata.truncated).toBe(true)
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expect(result.output).toContain("Output capped at")
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expect(result.output).toContain("Use offset=")
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},
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})
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})
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test("truncates by line count when limit is specified", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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const lines = Array.from({ length: 100 }, (_, i) => `line${i}`).join("\n")
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await Bun.write(path.join(dir, "many-lines.txt"), lines)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "many-lines.txt"), limit: 10 }, ctx)
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expect(result.metadata.truncated).toBe(true)
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expect(result.output).toContain("Showing lines 1-10 of 100")
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expect(result.output).toContain("Use offset=11")
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expect(result.output).toContain("line0")
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expect(result.output).toContain("line9")
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expect(result.output).not.toContain("line10")
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},
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})
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})
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test("does not truncate small file", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "small.txt"), "hello world")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "small.txt") }, ctx)
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expect(result.metadata.truncated).toBe(false)
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expect(result.output).toContain("End of file")
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},
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})
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})
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test("respects offset parameter", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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const lines = Array.from({ length: 20 }, (_, i) => `line${i + 1}`).join("\n")
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await Bun.write(path.join(dir, "offset.txt"), lines)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "offset.txt"), offset: 10, limit: 5 }, ctx)
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expect(result.output).toContain("10: line10")
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expect(result.output).toContain("14: line14")
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expect(result.output).not.toContain("9: line10")
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expect(result.output).not.toContain("15: line15")
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expect(result.output).toContain("line10")
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expect(result.output).toContain("line14")
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expect(result.output).not.toContain("line0")
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expect(result.output).not.toContain("line15")
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},
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})
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})
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test("throws when offset is beyond end of file", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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const lines = Array.from({ length: 3 }, (_, i) => `line${i + 1}`).join("\n")
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await Bun.write(path.join(dir, "short.txt"), lines)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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await expect(
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read.execute({ filePath: path.join(tmp.path, "short.txt"), offset: 4, limit: 5 }, ctx),
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).rejects.toThrow("Offset 4 is out of range for this file (3 lines)")
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},
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})
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})
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test("allows reading empty file at default offset", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "empty.txt"), "")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "empty.txt") }, ctx)
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expect(result.metadata.truncated).toBe(false)
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expect(result.output).toContain("End of file - total 0 lines")
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},
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})
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})
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test("throws when offset > 1 for empty file", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "empty.txt"), "")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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await expect(read.execute({ filePath: path.join(tmp.path, "empty.txt"), offset: 2 }, ctx)).rejects.toThrow(
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"Offset 2 is out of range for this file (0 lines)",
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)
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},
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})
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})
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test("does not mark final directory page as truncated", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Promise.all(
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Array.from({ length: 10 }, (_, i) => Bun.write(path.join(dir, "dir", `file-${i + 1}.txt`), `line${i}`)),
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)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "dir"), offset: 6, limit: 5 }, ctx)
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expect(result.metadata.truncated).toBe(false)
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expect(result.output).not.toContain("Showing 5 of 10 entries")
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},
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})
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})
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test("truncates long lines", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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const longLine = "x".repeat(3000)
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await Bun.write(path.join(dir, "long-line.txt"), longLine)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "long-line.txt") }, ctx)
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expect(result.output).toContain("(line truncated to 2000 chars)")
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expect(result.output.length).toBeLessThan(3000)
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},
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})
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})
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test("image files set truncated to false", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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// 1x1 red PNG
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const png = Buffer.from(
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"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==",
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"base64",
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)
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await Bun.write(path.join(dir, "image.png"), png)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "image.png") }, ctx)
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expect(result.metadata.truncated).toBe(false)
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expect(result.attachments).toBeDefined()
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expect(result.attachments?.length).toBe(1)
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expect(result.attachments?.[0]).not.toHaveProperty("id")
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expect(result.attachments?.[0]).not.toHaveProperty("sessionID")
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expect(result.attachments?.[0]).not.toHaveProperty("messageID")
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},
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})
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})
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test("large image files are properly attached without error", async () => {
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await Instance.provide({
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directory: FIXTURES_DIR,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(FIXTURES_DIR, "large-image.png") }, ctx)
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expect(result.metadata.truncated).toBe(false)
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expect(result.attachments).toBeDefined()
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expect(result.attachments?.length).toBe(1)
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expect(result.attachments?.[0].type).toBe("file")
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expect(result.attachments?.[0]).not.toHaveProperty("id")
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expect(result.attachments?.[0]).not.toHaveProperty("sessionID")
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expect(result.attachments?.[0]).not.toHaveProperty("messageID")
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},
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})
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})
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test(".fbs files (FlatBuffers schema) are read as text, not images", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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// FlatBuffers schema content
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const fbsContent = `namespace MyGame;
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table Monster {
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pos:Vec3;
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name:string;
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inventory:[ubyte];
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}
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root_type Monster;`
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await Bun.write(path.join(dir, "schema.fbs"), fbsContent)
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "schema.fbs") }, ctx)
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// Should be read as text, not as image
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expect(result.attachments).toBeUndefined()
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expect(result.output).toContain("namespace MyGame")
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expect(result.output).toContain("table Monster")
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},
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})
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})
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})
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describe("tool.read loaded instructions", () => {
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test("loads AGENTS.md from parent directory and includes in metadata", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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await Bun.write(path.join(dir, "subdir", "AGENTS.md"), "# Test Instructions\nDo something special.")
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await Bun.write(path.join(dir, "subdir", "nested", "test.txt"), "test content")
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},
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})
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await Instance.provide({
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directory: tmp.path,
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fn: async () => {
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const read = await ReadTool.init()
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const result = await read.execute({ filePath: path.join(tmp.path, "subdir", "nested", "test.txt") }, ctx)
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expect(result.output).toContain("test content")
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expect(result.output).toContain("system-reminder")
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expect(result.output).toContain("Test Instructions")
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expect(result.metadata.loaded).toBeDefined()
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expect(result.metadata.loaded).toContain(path.join(tmp.path, "subdir", "AGENTS.md"))
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},
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})
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})
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})
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describe("tool.read binary detection", () => {
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test("rejects text extension files with null bytes", async () => {
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await using tmp = await tmpdir({
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init: async (dir) => {
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const bytes = Buffer.from([0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x00, 0x77, 0x6f, 0x72, 0x6c, 0x64])
|
|
await Bun.write(path.join(dir, "null-byte.txt"), bytes)
|
|
},
|
|
})
|
|
await Instance.provide({
|
|
directory: tmp.path,
|
|
fn: async () => {
|
|
const read = await ReadTool.init()
|
|
await expect(read.execute({ filePath: path.join(tmp.path, "null-byte.txt") }, ctx)).rejects.toThrow(
|
|
"Cannot read binary file",
|
|
)
|
|
},
|
|
})
|
|
})
|
|
|
|
test("rejects known binary extensions", async () => {
|
|
await using tmp = await tmpdir({
|
|
init: async (dir) => {
|
|
await Bun.write(path.join(dir, "module.wasm"), "not really wasm")
|
|
},
|
|
})
|
|
await Instance.provide({
|
|
directory: tmp.path,
|
|
fn: async () => {
|
|
const read = await ReadTool.init()
|
|
await expect(read.execute({ filePath: path.join(tmp.path, "module.wasm") }, ctx)).rejects.toThrow(
|
|
"Cannot read binary file",
|
|
)
|
|
},
|
|
})
|
|
})
|
|
})
|