Files
opencode/packages/opencode/test/tool/read.test.ts

474 lines
17 KiB
TypeScript

import { afterEach, describe, expect } from "bun:test"
import { Cause, Effect, Exit, Layer } from "effect"
import path from "path"
import { Agent } from "../../src/agent/agent"
import * as CrossSpawnSpawner from "../../src/effect/cross-spawn-spawner"
import { AppFileSystem } from "@opencode-ai/shared/filesystem"
import { FileTime } from "../../src/file/time"
import { LSP } from "../../src/lsp"
import { Permission } from "../../src/permission/permission"
import { Instance } from "../../src/project/instance"
import { SessionID, MessageID } from "../../src/session/schema"
import { Instruction } from "../../src/session/instruction"
import { ReadTool } from "../../src/tool/read"
import { Truncate } from "../../src/tool"
import { Tool } from "../../src/tool"
import { Filesystem } from "../../src/util"
import { provideInstance, tmpdirScoped } from "../fixture/fixture"
import { testEffect } from "../lib/effect"
import { Npm } from "@opencode-ai/shared/npm"
const FIXTURES_DIR = path.join(import.meta.dir, "fixtures")
afterEach(async () => {
await Instance.disposeAll()
})
const ctx = {
sessionID: SessionID.make("ses_test"),
messageID: MessageID.make(""),
callID: "",
agent: "build",
abort: AbortSignal.any([]),
messages: [],
metadata: () => Effect.void,
ask: () => Effect.void,
}
const it = testEffect(
Layer.mergeAll(
Agent.defaultLayer,
AppFileSystem.defaultLayer,
CrossSpawnSpawner.defaultLayer,
FileTime.defaultLayer,
Instruction.defaultLayer,
LSP.defaultLayer,
Truncate.defaultLayer,
),
)
const init = Effect.fn("ReadToolTest.init")(function* () {
const info = yield* ReadTool
return yield* info.init()
})
const run = Effect.fn("ReadToolTest.run")(function* (
args: Tool.InferParameters<typeof ReadTool>,
next: Tool.Context = ctx,
) {
const tool = yield* init()
return yield* tool.execute(args, next)
})
const exec = Effect.fn("ReadToolTest.exec")(function* (
dir: string,
args: Tool.InferParameters<typeof ReadTool>,
next: Tool.Context = ctx,
) {
return yield* provideInstance(dir)(run(args, next))
})
const fail = Effect.fn("ReadToolTest.fail")(function* (
dir: string,
args: Tool.InferParameters<typeof ReadTool>,
next: Tool.Context = ctx,
) {
const exit = yield* exec(dir, args, next).pipe(Effect.exit)
if (Exit.isFailure(exit)) {
const err = Cause.squash(exit.cause)
return err instanceof Error ? err : new Error(String(err))
}
throw new Error("expected read to fail")
})
const full = (p: string) => (process.platform === "win32" ? Filesystem.normalizePath(p) : p)
const glob = (p: string) =>
process.platform === "win32" ? Filesystem.normalizePathPattern(p) : p.replaceAll("\\", "/")
const put = Effect.fn("ReadToolTest.put")(function* (p: string, content: string | Buffer | Uint8Array) {
const fs = yield* AppFileSystem.Service
yield* fs.writeWithDirs(p, content)
})
const load = Effect.fn("ReadToolTest.load")(function* (p: string) {
const fs = yield* AppFileSystem.Service
return yield* fs.readFileString(p)
})
const asks = () => {
const items: Array<Omit<Permission.Request, "id" | "sessionID" | "tool">> = []
return {
items,
next: {
...ctx,
ask: (req: Omit<Permission.Request, "id" | "sessionID" | "tool">) =>
Effect.sync(() => {
items.push(req)
}),
},
}
}
describe("tool.read external_directory permission", () => {
it.live("allows reading absolute path inside project directory", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "test.txt"), "hello world")
const result = yield* exec(dir, { filePath: path.join(dir, "test.txt") })
expect(result.output).toContain("hello world")
}),
)
it.live("allows reading file in subdirectory inside project directory", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "subdir", "test.txt"), "nested content")
const result = yield* exec(dir, { filePath: path.join(dir, "subdir", "test.txt") })
expect(result.output).toContain("nested content")
}),
)
it.live("asks for external_directory permission when reading absolute path outside project", () =>
Effect.gen(function* () {
const outer = yield* tmpdirScoped()
const dir = yield* tmpdirScoped({ git: true })
yield* put(path.join(outer, "secret.txt"), "secret data")
const { items, next } = asks()
yield* exec(dir, { filePath: path.join(outer, "secret.txt") }, next)
const ext = items.find((item) => item.permission === "external_directory")
expect(ext).toBeDefined()
expect(ext!.patterns).toContain(glob(path.join(outer, "*")))
}),
)
if (process.platform === "win32") {
it.live("normalizes read permission paths on Windows", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped({ git: true })
yield* put(path.join(dir, "test.txt"), "hello world")
const { items, next } = asks()
const target = path.join(dir, "test.txt")
const alt = target
.replace(/^[A-Za-z]:/, "")
.replaceAll("\\", "/")
.toLowerCase()
yield* exec(dir, { filePath: alt }, next)
const read = items.find((item) => item.permission === "read")
expect(read).toBeDefined()
expect(read!.patterns).toEqual([full(target)])
}),
)
}
it.live("asks for directory-scoped external_directory permission when reading external directory", () =>
Effect.gen(function* () {
const outer = yield* tmpdirScoped()
const dir = yield* tmpdirScoped({ git: true })
yield* put(path.join(outer, "external", "a.txt"), "a")
const { items, next } = asks()
yield* exec(dir, { filePath: path.join(outer, "external") }, next)
const ext = items.find((item) => item.permission === "external_directory")
expect(ext).toBeDefined()
expect(ext!.patterns).toContain(glob(path.join(outer, "external", "*")))
}),
)
it.live("asks for external_directory permission when reading relative path outside project", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped({ git: true })
const { items, next } = asks()
yield* fail(dir, { filePath: "../outside.txt" }, next)
const ext = items.find((item) => item.permission === "external_directory")
expect(ext).toBeDefined()
}),
)
it.live("does not ask for external_directory permission when reading inside project", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped({ git: true })
yield* put(path.join(dir, "internal.txt"), "internal content")
const { items, next } = asks()
yield* exec(dir, { filePath: path.join(dir, "internal.txt") }, next)
const ext = items.find((item) => item.permission === "external_directory")
expect(ext).toBeUndefined()
}),
)
})
describe("tool.read env file permissions", () => {
const cases: [string, boolean][] = [
[".env", true],
[".env.local", true],
[".env.production", true],
[".env.development.local", true],
[".env.example", false],
[".envrc", false],
["environment.ts", false],
]
for (const agentName of ["build", "plan"] as const) {
describe(`agent=${agentName}`, () => {
for (const [filename, shouldAsk] of cases) {
it.live(`${filename} asks=${shouldAsk}`, () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, filename), "content")
const asked = yield* provideInstance(dir)(
Effect.gen(function* () {
const agent = yield* Agent.Service
const info = yield* agent.get(agentName)
let asked = false
const next = {
...ctx,
ask: (req: Omit<Permission.Request, "id" | "sessionID" | "tool">) =>
Effect.sync(() => {
for (const pattern of req.patterns) {
const rule = Permission.evaluate(req.permission, pattern, info.permission)
if (rule.action === "ask" && req.permission === "read") {
asked = true
}
if (rule.action === "deny") {
throw new Permission.DeniedError({ ruleset: info.permission })
}
}
}),
}
yield* run({ filePath: path.join(dir, filename) }, next)
return asked
}),
)
expect(asked).toBe(shouldAsk)
}),
)
}
})
}
})
describe("tool.read truncation", () => {
it.live("truncates large file by bytes and sets truncated metadata", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const base = yield* load(path.join(FIXTURES_DIR, "models-api.json"))
const target = 60 * 1024
const content = base.length >= target ? base : base.repeat(Math.ceil(target / base.length))
yield* put(path.join(dir, "large.json"), content)
const result = yield* exec(dir, { filePath: path.join(dir, "large.json") })
expect(result.metadata.truncated).toBe(true)
expect(result.output).toContain("Output capped at")
expect(result.output).toContain("Use offset=")
}),
)
it.live("truncates by line count when limit is specified", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const lines = Array.from({ length: 100 }, (_, i) => `line${i}`).join("\n")
yield* put(path.join(dir, "many-lines.txt"), lines)
const result = yield* exec(dir, { filePath: path.join(dir, "many-lines.txt"), limit: 10 })
expect(result.metadata.truncated).toBe(true)
expect(result.output).toContain("Showing lines 1-10 of 100")
expect(result.output).toContain("Use offset=11")
expect(result.output).toContain("line0")
expect(result.output).toContain("line9")
expect(result.output).not.toContain("line10")
}),
)
it.live("does not truncate small file", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "small.txt"), "hello world")
const result = yield* exec(dir, { filePath: path.join(dir, "small.txt") })
expect(result.metadata.truncated).toBe(false)
expect(result.output).toContain("End of file")
}),
)
it.live("respects offset parameter", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const lines = Array.from({ length: 20 }, (_, i) => `line${i + 1}`).join("\n")
yield* put(path.join(dir, "offset.txt"), lines)
const result = yield* exec(dir, { filePath: path.join(dir, "offset.txt"), offset: 10, limit: 5 })
expect(result.output).toContain("10: line10")
expect(result.output).toContain("14: line14")
expect(result.output).not.toContain("9: line10")
expect(result.output).not.toContain("15: line15")
expect(result.output).toContain("line10")
expect(result.output).toContain("line14")
expect(result.output).not.toContain("line0")
expect(result.output).not.toContain("line15")
}),
)
it.live("throws when offset is beyond end of file", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const lines = Array.from({ length: 3 }, (_, i) => `line${i + 1}`).join("\n")
yield* put(path.join(dir, "short.txt"), lines)
const err = yield* fail(dir, { filePath: path.join(dir, "short.txt"), offset: 4, limit: 5 })
expect(err.message).toContain("Offset 4 is out of range for this file (3 lines)")
}),
)
it.live("allows reading empty file at default offset", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "empty.txt"), "")
const result = yield* exec(dir, { filePath: path.join(dir, "empty.txt") })
expect(result.metadata.truncated).toBe(false)
expect(result.output).toContain("End of file - total 0 lines")
}),
)
it.live("throws when offset > 1 for empty file", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "empty.txt"), "")
const err = yield* fail(dir, { filePath: path.join(dir, "empty.txt"), offset: 2 })
expect(err.message).toContain("Offset 2 is out of range for this file (0 lines)")
}),
)
it.live("does not mark final directory page as truncated", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* Effect.forEach(
Array.from({ length: 10 }, (_, i) => i),
(i) => put(path.join(dir, "dir", `file-${i + 1}.txt`), `line${i}`),
{
concurrency: "unbounded",
},
)
const result = yield* exec(dir, { filePath: path.join(dir, "dir"), offset: 6, limit: 5 })
expect(result.metadata.truncated).toBe(false)
expect(result.output).not.toContain("Showing 5 of 10 entries")
}),
)
it.live("truncates long lines", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "long-line.txt"), "x".repeat(3000))
const result = yield* exec(dir, { filePath: path.join(dir, "long-line.txt") })
expect(result.output).toContain("(line truncated to 2000 chars)")
expect(result.output.length).toBeLessThan(3000)
}),
)
it.live("image files set truncated to false", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const png = Buffer.from(
"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==",
"base64",
)
yield* put(path.join(dir, "image.png"), png)
const result = yield* exec(dir, { filePath: path.join(dir, "image.png") })
expect(result.metadata.truncated).toBe(false)
expect(result.attachments).toBeDefined()
expect(result.attachments?.length).toBe(1)
expect(result.attachments?.[0]).not.toHaveProperty("id")
expect(result.attachments?.[0]).not.toHaveProperty("sessionID")
expect(result.attachments?.[0]).not.toHaveProperty("messageID")
}),
)
it.live("large image files are properly attached without error", () =>
Effect.gen(function* () {
const result = yield* exec(FIXTURES_DIR, { filePath: path.join(FIXTURES_DIR, "large-image.png") })
expect(result.metadata.truncated).toBe(false)
expect(result.attachments).toBeDefined()
expect(result.attachments?.length).toBe(1)
expect(result.attachments?.[0].type).toBe("file")
expect(result.attachments?.[0]).not.toHaveProperty("id")
expect(result.attachments?.[0]).not.toHaveProperty("sessionID")
expect(result.attachments?.[0]).not.toHaveProperty("messageID")
}),
)
it.live(".fbs files (FlatBuffers schema) are read as text, not images", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const fbs = `namespace MyGame;
table Monster {
pos:Vec3;
name:string;
inventory:[ubyte];
}
root_type Monster;`
yield* put(path.join(dir, "schema.fbs"), fbs)
const result = yield* exec(dir, { filePath: path.join(dir, "schema.fbs") })
expect(result.attachments).toBeUndefined()
expect(result.output).toContain("namespace MyGame")
expect(result.output).toContain("table Monster")
}),
)
})
describe("tool.read loaded instructions", () => {
it.live("loads AGENTS.md from parent directory and includes in metadata", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "subdir", "AGENTS.md"), "# Test Instructions\nDo something special.")
yield* put(path.join(dir, "subdir", "nested", "test.txt"), "test content")
const result = yield* exec(dir, { filePath: path.join(dir, "subdir", "nested", "test.txt") })
expect(result.output).toContain("test content")
expect(result.output).toContain("system-reminder")
expect(result.output).toContain("Test Instructions")
expect(result.metadata.loaded).toBeDefined()
expect(result.metadata.loaded).toContain(path.join(dir, "subdir", "AGENTS.md"))
}),
)
})
describe("tool.read binary detection", () => {
it.live("rejects text extension files with null bytes", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
const bytes = Buffer.from([0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x00, 0x77, 0x6f, 0x72, 0x6c, 0x64])
yield* put(path.join(dir, "null-byte.txt"), bytes)
const err = yield* fail(dir, { filePath: path.join(dir, "null-byte.txt") })
expect(err.message).toContain("Cannot read binary file")
}),
)
it.live("rejects known binary extensions", () =>
Effect.gen(function* () {
const dir = yield* tmpdirScoped()
yield* put(path.join(dir, "module.wasm"), "not really wasm")
const err = yield* fail(dir, { filePath: path.join(dir, "module.wasm") })
expect(err.message).toContain("Cannot read binary file")
}),
)
})