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denoland-deno/cli/tests/unit/read_file_test.ts

193 lines
5.6 KiB
TypeScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
import { writeAllSync } from "../../../test_util/std/io/util.ts";
import {
assert,
assertEquals,
assertRejects,
assertThrows,
pathToAbsoluteFileUrl,
unreachable,
} from "./test_util.ts";
Deno.test({ permissions: { read: true } }, function readFileSyncSuccess() {
const data = Deno.readFileSync("cli/tests/testdata/fixture.json");
assert(data.byteLength > 0);
const decoder = new TextDecoder("utf-8");
const json = decoder.decode(data);
const pkg = JSON.parse(json);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: true } }, function readFileSyncUrl() {
const data = Deno.readFileSync(
pathToAbsoluteFileUrl("cli/tests/testdata/fixture.json"),
);
assert(data.byteLength > 0);
const decoder = new TextDecoder("utf-8");
const json = decoder.decode(data);
const pkg = JSON.parse(json);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: false } }, function readFileSyncPerm() {
assertThrows(() => {
Deno.readFileSync("cli/tests/testdata/fixture.json");
}, Deno.errors.PermissionDenied);
});
Deno.test({ permissions: { read: true } }, function readFileSyncNotFound() {
assertThrows(() => {
Deno.readFileSync("bad_filename");
}, Deno.errors.NotFound);
});
Deno.test({ permissions: { read: true } }, async function readFileUrl() {
const data = await Deno.readFile(
pathToAbsoluteFileUrl("cli/tests/testdata/fixture.json"),
);
assert(data.byteLength > 0);
const decoder = new TextDecoder("utf-8");
const json = decoder.decode(data);
const pkg = JSON.parse(json);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: true } }, async function readFileSuccess() {
const data = await Deno.readFile("cli/tests/testdata/fixture.json");
assert(data.byteLength > 0);
const decoder = new TextDecoder("utf-8");
const json = decoder.decode(data);
const pkg = JSON.parse(json);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: false } }, async function readFilePerm() {
await assertRejects(async () => {
await Deno.readFile("cli/tests/testdata/fixture.json");
}, Deno.errors.PermissionDenied);
});
Deno.test({ permissions: { read: true } }, function readFileSyncLoop() {
for (let i = 0; i < 256; i++) {
Deno.readFileSync("cli/tests/testdata/fixture.json");
}
});
Deno.test(
{ permissions: { read: true } },
async function readFileDoesNotLeakResources() {
const resourcesBefore = Deno.resources();
await assertRejects(async () => await Deno.readFile("cli"));
assertEquals(resourcesBefore, Deno.resources());
},
);
Deno.test(
{ permissions: { read: true } },
function readFileSyncDoesNotLeakResources() {
const resourcesBefore = Deno.resources();
assertThrows(() => Deno.readFileSync("cli"));
assertEquals(resourcesBefore, Deno.resources());
},
);
Deno.test(
{ permissions: { read: true } },
async function readFileWithAbortSignal() {
const ac = new AbortController();
queueMicrotask(() => ac.abort());
await assertRejects(
async () => {
await Deno.readFile("cli/tests/testdata/fixture.json", {
signal: ac.signal,
});
},
(error: Error) => {
assert(error instanceof DOMException);
assertEquals(error.name, "AbortError");
},
);
},
);
Deno.test(
{ permissions: { read: true } },
async function readFileWithAbortSignalReason() {
const ac = new AbortController();
const abortReason = new Error();
queueMicrotask(() => ac.abort(abortReason));
await assertRejects(
async () => {
await Deno.readFile("cli/tests/testdata/fixture.json", {
signal: ac.signal,
});
},
(error: Error) => {
assertEquals(error, abortReason);
},
);
},
);
Deno.test(
{ permissions: { read: true } },
async function readFileWithAbortSignalPrimitiveReason() {
const ac = new AbortController();
queueMicrotask(() => ac.abort("Some string"));
try {
await Deno.readFile("cli/tests/testdata/fixture.json", {
signal: ac.signal,
});
unreachable();
} catch (e) {
assertEquals(e, "Some string");
}
},
);
Deno.test(
{ permissions: { read: true }, ignore: Deno.build.os !== "linux" },
async function readFileProcFs() {
const data = await Deno.readFile("/proc/self/stat");
assert(data.byteLength > 0);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function readFileExtendedDuringRead() {
// Write 128MB file
const filename = Deno.makeTempDirSync() + "/test.txt";
const data = new Uint8Array(1024 * 1024 * 128);
Deno.writeFileSync(filename, data);
const promise = Deno.readFile(filename);
queueMicrotask(() => {
// Append 128MB to file
const f = Deno.openSync(filename, { append: true });
writeAllSync(f, data);
f.close();
});
const read = await promise;
assertEquals(read.byteLength, data.byteLength * 2);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function readFile0LengthExtendedDuringRead() {
// Write 0 byte file
const filename = Deno.makeTempDirSync() + "/test.txt";
const first = new Uint8Array(0);
const second = new Uint8Array(1024 * 1024 * 128);
Deno.writeFileSync(filename, first);
const promise = Deno.readFile(filename);
queueMicrotask(() => {
// Append 128MB to file
const f = Deno.openSync(filename, { append: true });
writeAllSync(f, second);
f.close();
});
const read = await promise;
assertEquals(read.byteLength, second.byteLength);
},
);