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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertCallbackErrorUncaught } from "../_test_utils.ts";
import { promises, readFile, readFileSync } from "node:fs";
import * as path from "@std/path";
import { assert, assertEquals } from "@std/assert";
const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));
const testData = path.resolve(moduleDir, "testdata", "hello.txt");
Deno.test("readFileSuccess", async function () {
const data = await new Promise((res, rej) => {
readFile(testData, (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assert(data instanceof Uint8Array);
assertEquals(new TextDecoder().decode(data as Uint8Array), "hello world");
});
Deno.test("readFileEncodeUtf8Success", async function () {
const data = await new Promise((res, rej) => {
readFile(testData, { encoding: "utf8" }, (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assertEquals(typeof data, "string");
assertEquals(data as string, "hello world");
});
Deno.test("readFileEncodeHexSuccess", async function () {
const data = await new Promise((res, rej) => {
readFile(testData, { encoding: "hex" }, (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assertEquals(typeof data, "string");
assertEquals(data as string, "68656c6c6f20776f726c64");
});
Deno.test("readFileEncodeBase64Success", async function () {
const data = await new Promise((res, rej) => {
readFile(testData, { encoding: "base64" }, (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assertEquals(typeof data, "string");
assertEquals(data as string, "aGVsbG8gd29ybGQ=");
});
Deno.test("readFileEncodingAsString", async function () {
const data = await new Promise((res, rej) => {
readFile(testData, "utf8", (err, data) => {
if (err) {
rej(err);
}
res(data);
});
});
assertEquals(typeof data, "string");
assertEquals(data as string, "hello world");
});
Deno.test("readFileSyncSuccess", function () {
const data = readFileSync(testData);
assert(data instanceof Uint8Array);
assertEquals(new TextDecoder().decode(data as Uint8Array), "hello world");
});
Deno.test("readFileEncodeUtf8Success", function () {
const data = readFileSync(testData, { encoding: "utf8" });
assertEquals(typeof data, "string");
assertEquals(data as string, "hello world");
});
Deno.test("readFileEncodeHexSuccess", function () {
const data = readFileSync(testData, { encoding: "hex" });
assertEquals(typeof data, "string");
assertEquals(data as string, "68656c6c6f20776f726c64");
});
Deno.test("readFileEncodeBase64Success", function () {
const data = readFileSync(testData, { encoding: "base64" });
assertEquals(typeof data, "string");
assertEquals(data as string, "aGVsbG8gd29ybGQ=");
});
Deno.test("readFileEncodeAsString", function () {
const data = readFileSync(testData, "utf8");
assertEquals(typeof data, "string");
assertEquals(data as string, "hello world");
});
Deno.test("[std/node/fs] readFile callback isn't called twice if error is thrown", async () => {
const tempFile = await Deno.makeTempFile();
const importUrl = new URL("node:fs", import.meta.url);
await assertCallbackErrorUncaught({
prelude: `import { readFile } from ${JSON.stringify(importUrl)}`,
invocation: `readFile(${JSON.stringify(tempFile)}, `,
async cleanup() {
await Deno.remove(tempFile);
},
});
});
Deno.test("fs.promises.readFile with no arg call rejects with error correctly", async () => {
// @ts-ignore no arg call needs to be supported
await promises.readFile().catch((_e) => {});
});
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