mirror of
https://github.com/denoland/deno.git
synced 2024-12-18 13:22:55 -05:00
119 lines
3.3 KiB
TypeScript
119 lines
3.3 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
import * as path from "@std/path";
|
|
import { Buffer } from "node:buffer";
|
|
import * as fs from "node:fs/promises";
|
|
import { assert, assertEquals } from "@std/assert";
|
|
|
|
const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
|
|
const testData = path.resolve(moduleDir, "testdata", "hello.txt");
|
|
const decoder = new TextDecoder();
|
|
|
|
Deno.test("readFileSuccess", async function () {
|
|
const fileHandle = await fs.open(testData);
|
|
const data = await fileHandle.readFile();
|
|
|
|
assert(data instanceof Uint8Array);
|
|
assertEquals(decoder.decode(data as Uint8Array), "hello world");
|
|
|
|
await fileHandle.close();
|
|
});
|
|
|
|
Deno.test("read", async function () {
|
|
const fileHandle = await fs.open(testData);
|
|
const byteLength = "hello world".length;
|
|
|
|
const buf = new Buffer(byteLength);
|
|
await fileHandle.read(buf, 0, byteLength, 0);
|
|
|
|
assertEquals(decoder.decode(buf as Uint8Array), "hello world");
|
|
|
|
await fileHandle.close();
|
|
});
|
|
|
|
Deno.test("read specify opt", async function () {
|
|
const fileHandle = await fs.open(testData);
|
|
const byteLength = "hello world".length;
|
|
|
|
const opt = {
|
|
buffer: new Buffer(byteLength),
|
|
offset: 6,
|
|
length: 5,
|
|
position: 6,
|
|
};
|
|
let res = await fileHandle.read(opt);
|
|
|
|
assertEquals(res.bytesRead, 5);
|
|
assertEquals(
|
|
new TextDecoder().decode(res.buffer.subarray(6) as Uint8Array),
|
|
"world",
|
|
);
|
|
|
|
const opt2 = {
|
|
buffer: new Buffer(byteLength),
|
|
length: 5,
|
|
position: 0,
|
|
};
|
|
res = await fileHandle.read(opt2);
|
|
|
|
assertEquals(res.bytesRead, 5);
|
|
assertEquals(
|
|
decoder.decode(res.buffer.subarray(0, 5) as Uint8Array),
|
|
"hello",
|
|
);
|
|
|
|
await fileHandle.close();
|
|
});
|
|
|
|
Deno.test("[node/fs filehandle.write] Write from Buffer", async function () {
|
|
const tempFile: string = await Deno.makeTempFile();
|
|
const fileHandle = await fs.open(tempFile, "a+");
|
|
|
|
const buffer = Buffer.from("hello world");
|
|
const res = await fileHandle.write(buffer, 0, 5, 0);
|
|
|
|
const data = Deno.readFileSync(tempFile);
|
|
await Deno.remove(tempFile);
|
|
await fileHandle.close();
|
|
|
|
assertEquals(res.bytesWritten, 5);
|
|
assertEquals(decoder.decode(data), "hello");
|
|
});
|
|
|
|
Deno.test("[node/fs filehandle.write] Write from string", async function () {
|
|
const tempFile: string = await Deno.makeTempFile();
|
|
const fileHandle = await fs.open(tempFile, "a+");
|
|
|
|
const str = "hello world";
|
|
const res = await fileHandle.write(str);
|
|
|
|
const data = Deno.readFileSync(tempFile);
|
|
await Deno.remove(tempFile);
|
|
await fileHandle.close();
|
|
|
|
assertEquals(res.bytesWritten, 11);
|
|
assertEquals(decoder.decode(data), "hello world");
|
|
});
|
|
|
|
Deno.test("[node/fs filehandle.stat] Get file status", async function () {
|
|
const fileHandle = await fs.open(testData);
|
|
const stat = await fileHandle.stat();
|
|
|
|
assertEquals(stat.isFile(), true);
|
|
assertEquals(stat.size, "hello world".length);
|
|
|
|
await fileHandle.close();
|
|
});
|
|
|
|
Deno.test("[node/fs filehandle.writeFile] Write to file", async function () {
|
|
const tempFile: string = await Deno.makeTempFile();
|
|
const fileHandle = await fs.open(tempFile, "w");
|
|
|
|
const str = "hello world";
|
|
await fileHandle.writeFile(str);
|
|
|
|
const data = Deno.readFileSync(tempFile);
|
|
await Deno.remove(tempFile);
|
|
await fileHandle.close();
|
|
|
|
assertEquals(decoder.decode(data), "hello world");
|
|
});
|