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write.test.ts
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348 lines (302 loc) · 9.63 KB
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import { describe, test, expect } from "bun:test"
import path from "path"
import fs from "fs/promises"
import { WriteTool } from "../../src/tool/write"
import { Instance } from "../../src/project/instance"
import { tmpdir } from "../fixture/fixture"
const ctx = {
sessionID: "test-write-session",
messageID: "",
callID: "",
agent: "build",
abort: AbortSignal.any([]),
messages: [],
metadata: () => {},
ask: async () => {},
}
describe("tool.write", () => {
describe("new file creation", () => {
test("writes content to new file", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "newfile.txt")
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
const result = await write.execute(
{
filePath: filepath,
content: "Hello, World!",
},
ctx,
)
expect(result.output).toContain("Wrote file successfully")
expect(result.metadata.exists).toBe(false)
const content = await fs.readFile(filepath, "utf-8")
expect(content).toBe("Hello, World!")
},
})
})
test("creates parent directories if needed", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "nested", "deep", "file.txt")
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content: "nested content",
},
ctx,
)
const content = await fs.readFile(filepath, "utf-8")
expect(content).toBe("nested content")
},
})
})
test("handles relative paths by resolving to instance directory", async () => {
await using tmp = await tmpdir()
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: "relative.txt",
content: "relative content",
},
ctx,
)
const content = await fs.readFile(path.join(tmp.path, "relative.txt"), "utf-8")
expect(content).toBe("relative content")
},
})
})
})
describe("existing file overwrite", () => {
test("overwrites existing file content", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "existing.txt")
await fs.writeFile(filepath, "old content", "utf-8")
// First read the file to satisfy FileTime requirement
await Instance.provide({
directory: tmp.path,
fn: async () => {
const { FileTime } = await import("../../src/file/time")
FileTime.read(ctx.sessionID, filepath)
const write = await WriteTool.init()
const result = await write.execute(
{
filePath: filepath,
content: "new content",
},
ctx,
)
expect(result.output).toContain("Wrote file successfully")
expect(result.metadata.exists).toBe(true)
const content = await fs.readFile(filepath, "utf-8")
expect(content).toBe("new content")
},
})
})
test("returns diff in metadata for existing files", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "file.txt")
await fs.writeFile(filepath, "old", "utf-8")
await Instance.provide({
directory: tmp.path,
fn: async () => {
const { FileTime } = await import("../../src/file/time")
FileTime.read(ctx.sessionID, filepath)
const write = await WriteTool.init()
const result = await write.execute(
{
filePath: filepath,
content: "new",
},
ctx,
)
// Diff should be in metadata
expect(result.metadata).toHaveProperty("filepath", filepath)
expect(result.metadata).toHaveProperty("exists", true)
},
})
})
})
describe("file permissions", () => {
test("sets file permissions when writing sensitive data", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "sensitive.json")
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content: JSON.stringify({ secret: "data" }),
},
ctx,
)
// On Unix systems, check permissions
if (process.platform !== "win32") {
const stats = await fs.stat(filepath)
expect(stats.mode & 0o777).toBe(0o644)
}
},
})
})
})
describe("content types", () => {
test("writes JSON content", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "data.json")
const data = { key: "value", nested: { array: [1, 2, 3] } }
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content: JSON.stringify(data, null, 2),
},
ctx,
)
const content = await fs.readFile(filepath, "utf-8")
expect(JSON.parse(content)).toEqual(data)
},
})
})
test("writes binary-safe content", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "binary.bin")
const content = "Hello\x00World\x01\x02\x03"
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content,
},
ctx,
)
const buf = await fs.readFile(filepath)
expect(buf.toString()).toBe(content)
},
})
})
test("writes empty content", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "empty.txt")
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content: "",
},
ctx,
)
const content = await fs.readFile(filepath, "utf-8")
expect(content).toBe("")
const stats = await fs.stat(filepath)
expect(stats.size).toBe(0)
},
})
})
test("writes multi-line content", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "multiline.txt")
const lines = ["Line 1", "Line 2", "Line 3", ""].join("\n")
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content: lines,
},
ctx,
)
const content = await fs.readFile(filepath, "utf-8")
expect(content).toBe(lines)
},
})
})
test("handles different line endings", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "crlf.txt")
const content = "Line 1\r\nLine 2\r\nLine 3"
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
await write.execute(
{
filePath: filepath,
content,
},
ctx,
)
const buf = await fs.readFile(filepath)
expect(buf.toString()).toBe(content)
},
})
})
})
describe("error handling", () => {
test("throws error when OS denies write access", async () => {
await using tmp = await tmpdir()
const readonlyPath = path.join(tmp.path, "readonly.txt")
// Create a read-only file
await fs.writeFile(readonlyPath, "test", "utf-8")
await fs.chmod(readonlyPath, 0o444)
await Instance.provide({
directory: tmp.path,
fn: async () => {
const { FileTime } = await import("../../src/file/time")
FileTime.read(ctx.sessionID, readonlyPath)
const write = await WriteTool.init()
await expect(
write.execute(
{
filePath: readonlyPath,
content: "new content",
},
ctx,
),
).rejects.toThrow()
},
})
})
})
describe("title generation", () => {
test("returns relative path as title", async () => {
await using tmp = await tmpdir()
const filepath = path.join(tmp.path, "src", "components", "Button.tsx")
await fs.mkdir(path.dirname(filepath), { recursive: true })
await Instance.provide({
directory: tmp.path,
fn: async () => {
const write = await WriteTool.init()
const result = await write.execute(
{
filePath: filepath,
content: "export const Button = () => {}",
},
ctx,
)
expect(result.title).toEndWith(path.join("src", "components", "Button.tsx"))
},
})
})
})
})