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denoland-deno/tests/unit_node/os_test.ts

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// deno-lint-ignore-file no-undef
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import os from "node:os";
import {
assert,
assertEquals,
assertNotEquals,
assertThrows,
} from "@std/assert";
import console from "node:console";
Deno.test({
name: "build architecture is a string",
fn() {
assertEquals(typeof os.arch(), "string");
},
});
Deno.test({
name: "build architecture",
fn() {
if (Deno.build.arch == "x86_64") {
assertEquals(os.arch(), "x64");
} else if (Deno.build.arch == "aarch64") {
assertEquals(os.arch(), "arm64");
} else {
throw new Error("unreachable");
}
},
});
Deno.test({
name: "os machine (arch)",
fn() {
if (Deno.build.arch == "aarch64") {
assertEquals(os.machine(), "arm64");
} else {
assertEquals(os.machine(), Deno.build.arch);
}
},
});
Deno.test({
name: "home directory is a string",
fn() {
assertEquals(typeof os.homedir(), "string");
},
});
Deno.test({
name: "home directory when HOME is not set",
fn() {
Deno.env.delete("HOME");
assertEquals(typeof os.homedir(), "string");
},
});
Deno.test({
name: "tmp directory is a string",
fn() {
assertEquals(typeof os.tmpdir(), "string");
},
});
Deno.test({
name: "hostname is a string",
fn() {
assertEquals(typeof os.hostname(), "string");
},
});
Deno.test({
name: "platform is a string",
fn() {
assertEquals(typeof os.platform(), "string");
},
});
Deno.test({
name: "release is a string",
fn() {
assertEquals(typeof os.release(), "string");
},
});
Deno.test({
name: "type is a string",
fn() {
assertEquals(typeof os.type(), "string");
},
});
Deno.test({
name: "getPriority(): PID must be a 32 bit integer",
fn() {
assertThrows(
() => {
os.getPriority(3.15);
},
Error,
"pid must be 'an integer'",
);
assertThrows(
() => {
os.getPriority(9999999999);
},
Error,
"must be >= -2147483648 && <= 2147483647",
);
},
});
Deno.test({
name: "setPriority(): PID must be a 32 bit integer",
fn() {
assertThrows(
() => {
os.setPriority(3.15, 0);
},
Error,
"pid must be 'an integer'",
);
assertThrows(
() => {
os.setPriority(9999999999, 0);
},
Error,
"pid must be >= -2147483648 && <= 2147483647",
);
},
});
Deno.test({
name: "setPriority(): priority must be an integer between -20 and 19",
fn() {
assertThrows(
() => {
os.setPriority(0, 3.15);
},
Error,
"priority must be 'an integer'",
);
assertThrows(
() => {
os.setPriority(0, -21);
},
Error,
"priority must be >= -20 && <= 19",
);
assertThrows(
() => {
os.setPriority(0, 20);
},
Error,
"priority must be >= -20 && <= 19",
);
assertThrows(
() => {
os.setPriority(0, 9999999999);
},
Error,
"priority must be >= -20 && <= 19",
);
},
});
Deno.test({
name:
"setPriority(): if only one argument specified, then this is the priority, NOT the pid",
fn() {
assertThrows(
() => {
os.setPriority(3.15);
},
Error,
"priority must be 'an integer'",
);
assertThrows(
() => {
os.setPriority(-21);
},
Error,
"priority must be >= -20 && <= 19",
);
assertThrows(
() => {
os.setPriority(20);
},
Error,
"priority must be >= -20 && <= 19",
);
assertThrows(
() => {
os.setPriority(9999999999);
},
Error,
"priority must be >= -20 && <= 19",
);
},
});
Deno.test({
name: "EOL is as expected",
fn() {
assert(os.EOL == "\r\n" || os.EOL == "\n");
},
});
Deno.test({
name: "Endianness is determined",
fn() {
assert(["LE", "BE"].includes(os.endianness()));
},
});
Deno.test({
name: "Load average is an array of 3 numbers",
fn() {
const result = os.loadavg();
assert(result.length == 3);
assertEquals(typeof result[0], "number");
assertEquals(typeof result[1], "number");
assertEquals(typeof result[2], "number");
},
});
Deno.test({
name: "Primitive coercion works as expected",
fn() {
assertEquals(`${os.arch}`, os.arch());
assertEquals(`${os.endianness}`, os.endianness());
assertEquals(`${os.platform}`, os.platform());
},
});
Deno.test({
name: "Total memory amount should be greater than 0",
fn() {
assert(os.totalmem() > 0);
},
});
Deno.test({
name: "Free memory amount should be greater than 0",
fn() {
assert(os.freemem() > 0);
},
});
Deno.test({
name: "Uptime should be greater than 0",
fn() {
assert(os.uptime() > 0);
},
});
Deno.test({
name: "os.cpus()",
fn() {
assertEquals(os.cpus().length, navigator.hardwareConcurrency);
for (const cpu of os.cpus()) {
assert(cpu.model.length > 0);
assert(cpu.speed >= 0);
assert(cpu.times.user > 0);
assert(cpu.times.sys > 0);
assert(cpu.times.idle > 0);
}
},
});
Deno.test({
name: "os.setPriority() & os.getPriority()",
// disabled because os.getPriority() doesn't work without sudo
ignore: true,
fn() {
const child = new Deno.Command(Deno.execPath(), {
args: ["eval", "while (true) { console.log('foo') }"],
}).spawn();
const originalPriority = os.getPriority(child.pid);
assertNotEquals(originalPriority, os.constants.priority.PRIORITY_HIGH);
os.setPriority(child.pid, os.constants.priority.PRIORITY_HIGH);
assertEquals(
os.getPriority(child.pid),
os.constants.priority.PRIORITY_HIGH,
);
os.setPriority(child.pid, originalPriority);
assertEquals(os.getPriority(child.pid), originalPriority);
child.kill();
},
});
Deno.test({
name:
"os.setPriority() throw os permission denied error & os.getPriority() doesn't",
async fn() {
const child = new Deno.Command(Deno.execPath(), {
args: ["eval", "while (true) { console.log('foo') }"],
}).spawn();
assertThrows(
() => {
try {
os.setPriority(child.pid, os.constants.priority.PRIORITY_HIGH);
} catch (err) {
console.error(err);
throw err;
}
},
Deno.errors.PermissionDenied,
);
os.getPriority(child.pid);
child.kill();
await child.status;
},
});
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// Gets the diff in log_10 scale
function diffLog10(a: number, b: number): number {
return Math.abs(Math.log10(a) - Math.log10(b));
}
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Deno.test({
name:
"os.freemem() is equivalent of Deno.systemMemoryInfo().free except on linux",
ignore: Deno.build.os === "linux",
fn() {
const diff = diffLog10(os.freemem(), Deno.systemMemoryInfo().free);
assert(diff < 1);
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},
});
Deno.test({
name:
"os.freemem() is equivalent of Deno.systemMemoryInfo().available on linux",
ignore: Deno.build.os !== "linux",
fn() {
const diff = diffLog10(os.freemem(), Deno.systemMemoryInfo().available);
assert(diff < 1);
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},
});