denoland-deno/std/fs/write_file_str_test.ts

import { assertEquals } from "../testing/asserts.ts";
import * as path from "../path/mod.ts";
import { writeFileStr, writeFileStrSync } from "./write_file_str.ts";

const testdataDir = path.resolve("fs", "testdata");

Deno.test(function testReadFileSync(): void {
  const jsonFile = path.join(testdataDir, "write_file_1.json");
  const content = "write_file_str_test";
  writeFileStrSync(jsonFile, content);

  // make sure file have been create.
  Deno.statSync(jsonFile);

  const result = new TextDecoder().decode(Deno.readFileSync(jsonFile));

  // remove test file
  Deno.removeSync(jsonFile);

  assertEquals(content, result);
});

Deno.test(async function testReadFile(): Promise<void> {
  const jsonFile = path.join(testdataDir, "write_file_2.json");
  const content = "write_file_str_test";
  await writeFileStr(jsonFile, content);

  // make sure file have been create.
  await Deno.stat(jsonFile);

  const result = new TextDecoder().decode(await Deno.readFile(jsonFile));

  // remove test file
  await Deno.remove(jsonFile);

  assertEquals(content, result);
});