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feat(std/fs/node): adding some functions (#7921)

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ali ahmed 2020-10-14 17:59:28 +02:00 • committed by GitHub
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71
std/node/_fs/_fs_readdir_test.ts Normal file
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import { assertEquals, assertNotEquals, fail } from "../../testing/asserts.ts";
import { readdir, readdirSync } from "./_fs_readdir.ts";
import { join } from "../../path/mod.ts";
Deno.test({
name: "ASYNC: reading empty directory",
async fn() {
const dir = Deno.makeTempDirSync();
await new Promise<string[]>((resolve, reject) => {
readdir(dir, (err, files) => {
if (err) reject(err);
resolve(files);
});
})
.then((files) => assertEquals(files, []))
.catch(() => fail())
.finally(() => Deno.removeSync(dir));
},
});
function assertEqualsArrayAnyOrder<T>(actual: T[], expected: T[]) {
assertEquals(actual.length, expected.length);
for (const item of expected) {
const index = actual.indexOf(item);
assertNotEquals(index, -1);
expected = expected.splice(index, 1);
}
}
Deno.test({
name: "ASYNC: reading non-empty directory",
async fn() {
const dir = Deno.makeTempDirSync();
Deno.writeTextFileSync(join(dir, "file1.txt"), "hi");
Deno.writeTextFileSync(join(dir, "file2.txt"), "hi");
Deno.mkdirSync(join(dir, "some_dir"));
await new Promise<string[]>((resolve, reject) => {
readdir(dir, (err, files) => {
if (err) reject(err);
resolve(files);
});
})
.then((files) =>
assertEqualsArrayAnyOrder(files, ["file1.txt", "some_dir", "file2.txt"])
)
.catch(() => fail())
.finally(() => Deno.removeSync(dir, { recursive: true }));
},
});
Deno.test({
name: "SYNC: reading empty the directory",
fn() {
const dir = Deno.makeTempDirSync();
assertEquals(readdirSync(dir), []);
},
});
Deno.test({
name: "SYNC: reading non-empty directory",
fn() {
const dir = Deno.makeTempDirSync();
Deno.writeTextFileSync(join(dir, "file1.txt"), "hi");
Deno.writeTextFileSync(join(dir, "file2.txt"), "hi");
Deno.mkdirSync(join(dir, "some_dir"));
assertEqualsArrayAnyOrder(
readdirSync(dir),
["file1.txt", "some_dir", "file2.txt"],
);
},
});