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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import {
assert,
assertEquals,
assertRejects,
assertThrows,
pathToAbsoluteFileUrl,
unreachable,
} from "./test_util.ts";
Deno.test({ permissions: { read: true } }, function readTextFileSyncSuccess() {
const data = Deno.readTextFileSync("tests/testdata/assets/fixture.json");
assert(data.length > 0);
const pkg = JSON.parse(data);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: true } }, function readTextFileSyncByUrl() {
const data = Deno.readTextFileSync(
pathToAbsoluteFileUrl("tests/testdata/assets/fixture.json"),
);
assert(data.length > 0);
const pkg = JSON.parse(data);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: false } }, function readTextFileSyncPerm() {
assertThrows(() => {
Deno.readTextFileSync("tests/testdata/assets/fixture.json");
}, Deno.errors.NotCapable);
});
Deno.test({ permissions: { read: true } }, function readTextFileSyncNotFound() {
assertThrows(() => {
Deno.readTextFileSync("bad_filename");
}, Deno.errors.NotFound);
});
Deno.test(
{ permissions: { read: true } },
async function readTextFileSuccess() {
const data = await Deno.readTextFile(
"tests/testdata/assets/fixture.json",
);
assert(data.length > 0);
const pkg = JSON.parse(data);
assertEquals(pkg.name, "deno");
},
);
Deno.test({ permissions: { read: true } }, async function readTextFileByUrl() {
const data = await Deno.readTextFile(
pathToAbsoluteFileUrl("tests/testdata/assets/fixture.json"),
);
assert(data.length > 0);
const pkg = JSON.parse(data);
assertEquals(pkg.name, "deno");
});
Deno.test({ permissions: { read: false } }, async function readTextFilePerm() {
await assertRejects(async () => {
await Deno.readTextFile("tests/testdata/assets/fixture.json");
}, Deno.errors.NotCapable);
});
Deno.test({ permissions: { read: true } }, function readTextFileSyncLoop() {
for (let i = 0; i < 256; i++) {
Deno.readTextFileSync("tests/testdata/assets/fixture.json");
}
});
Deno.test(
{ permissions: { read: true } },
async function readTextFileDoesNotLeakResources() {
await assertRejects(async () => await Deno.readTextFile("cli"));
},
);
Deno.test(
{ permissions: { read: true } },
function readTextFileSyncDoesNotLeakResources() {
assertThrows(() => Deno.readTextFileSync("cli"));
},
);
Deno.test(
{ permissions: { read: true } },
async function readTextFileWithAbortSignal() {
const ac = new AbortController();
queueMicrotask(() => ac.abort());
const error = await assertRejects(
async () => {
await Deno.readTextFile("tests/testdata/assets/fixture.json", {
signal: ac.signal,
});
},
);
assert(error instanceof DOMException);
assertEquals(error.name, "AbortError");
},
);
Deno.test(
{ permissions: { read: true } },
async function readTextFileWithAbortSignalReason() {
const ac = new AbortController();
const abortReason = new Error();
queueMicrotask(() => ac.abort(abortReason));
const error = await assertRejects(
async () => {
await Deno.readTextFile("tests/testdata/assets/fixture.json", {
signal: ac.signal,
});
},
);
assertEquals(error, abortReason);
},
);
Deno.test(
{ permissions: { read: true } },
async function readTextFileWithAbortSignalPrimitiveReason() {
const ac = new AbortController();
queueMicrotask(() => ac.abort("Some string"));
try {
await Deno.readTextFile("tests/testdata/assets/fixture.json", {
signal: ac.signal,
});
unreachable();
} catch (e) {
assertEquals(e, "Some string");
}
},
);
// Test that AbortController's cancel handle is cleaned-up correctly, and do not leak resources.
Deno.test(
{ permissions: { read: true } },
async function readTextFileWithAbortSignalNotCalled() {
const ac = new AbortController();
await Deno.readTextFile("tests/testdata/assets/fixture.json", {
signal: ac.signal,
});
},
);
Deno.test(
{ ignore: Deno.build.os !== "linux" },
async function readTextFileProcFs() {
const data = await Deno.readTextFile("/proc/self/stat");
assert(data.length > 0);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
function readTextFileSyncV8LimitError() {
const kStringMaxLengthPlusOne = 536870888 + 1;
const bytes = new Uint8Array(kStringMaxLengthPlusOne);
const filePath = "tests/testdata/too_big_a_file.txt";
try {
Deno.writeFileSync(filePath, bytes);
} catch {
// NOTE(bartlomieju): writing a 0.5Gb file might be too much for CI,
// so skip running if writing fails.
return;
}
assertThrows(
() => {
Deno.readTextFileSync(filePath);
},
TypeError,
"buffer exceeds maximum length",
);
Deno.removeSync(filePath);
},
);
Deno.test(
{ permissions: { read: true, write: true } },
async function readTextFileV8LimitError() {
const kStringMaxLengthPlusOne = 536870888 + 1;
const bytes = new Uint8Array(kStringMaxLengthPlusOne);
const filePath = "tests/testdata/too_big_a_file_2.txt";
try {
await Deno.writeFile(filePath, bytes);
} catch {
// NOTE(bartlomieju): writing a 0.5Gb file might be too much for CI,
// so skip running if writing fails.
return;
}
await assertRejects(
async () => {
await Deno.readTextFile(filePath);
},
TypeError,
"buffer exceeds maximum length",
);
await Deno.remove(filePath);
},
);
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