os_test.ts

// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals, assertThrows } from "../testing/asserts.ts";
import * as os from "./os.ts";

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: "home directory is a string",
  fn() {
    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: "Signals are as expected",
  fn() {
    // Test a few random signals for equality
    assertEquals(os.constants.signals.SIGKILL, "SIGKILL");
    assertEquals(os.constants.signals.SIGCONT, "SIGCONT");
    assertEquals(os.constants.signals.SIGXFSZ, "SIGXFSZ");
    assertEquals(os.constants.signals.SIGBREAK, "SIGBREAK");
  },
});

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: "os.cpus()",
  fn() {
    assertEquals(os.cpus().length, navigator.hardwareConcurrency);

    for (const cpu of os.cpus()) {
      assertEquals(cpu.model, "");
      assertEquals(cpu.speed, 0);
      assertEquals(cpu.times.user, 0);
      assertEquals(cpu.times.nice, 0);
      assertEquals(cpu.times.sys, 0);
      assertEquals(cpu.times.idle, 0);
      assertEquals(cpu.times.irq, 0);
    }
  },
});

Deno.test({
  name: "APIs not yet implemented",
  fn() {
    assertThrows(
      () => {
        os.getPriority();
      },
      Error,
      "Not implemented",
    );
    assertThrows(
      () => {
        os.setPriority(0);
      },
      Error,
      "Not implemented",
    );
    assertThrows(
      () => {
        os.uptime();
      },
      Error,
      "Not implemented",
    );
    assertThrows(
      () => {
        os.userInfo();
      },
      Error,
      "Not implemented",
    );
  },
});