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denoland-deno/cli/js/globals_test.ts
Bartek Iwańczuk 8d96dffa41
refactor: rewrite testPerm into unitTest (#4231)
Rewrite "testPerm" helper function used for testing of internal 
runtime code. It's been renamed to "unitTest" and provides API that
is extensible in the future by accepting optional "UnitTestOptions" 
argument. "test" helper was also removed and replaced by
overloaded version of "unitTest" that takes only function argument.

"UnitTestOptions" currently supports "perms" and "skip"
options, where former works exactly as first argument to "testPerm"
did, while the latter allows to conditionally skip tests.
2020-03-04 17:31:14 +01:00

112 lines
2.4 KiB
TypeScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { unitTest, assert } from "./test_util.ts";
unitTest(function globalThisExists(): void {
assert(globalThis != null);
});
unitTest(function windowExists(): void {
assert(window != null);
});
unitTest(function selfExists(): void {
assert(self != null);
});
unitTest(function windowWindowExists(): void {
assert(window.window === window);
});
unitTest(function windowSelfExists(): void {
assert(window.self === window);
});
unitTest(function globalThisEqualsWindow(): void {
assert(globalThis === window);
});
unitTest(function globalThisEqualsSelf(): void {
assert(globalThis === self);
});
unitTest(function DenoNamespaceExists(): void {
assert(Deno != null);
});
unitTest(function DenoNamespaceEqualsWindowDeno(): void {
assert(Deno === window.Deno);
});
unitTest(function DenoNamespaceIsFrozen(): void {
assert(Object.isFrozen(Deno));
});
unitTest(function webAssemblyExists(): void {
assert(typeof WebAssembly.compile === "function");
});
unitTest(function DenoNamespaceImmutable(): void {
const denoCopy = window.Deno;
try {
// @ts-ignore
Deno = 1;
} catch {}
assert(denoCopy === Deno);
try {
// @ts-ignore
window.Deno = 1;
} catch {}
assert(denoCopy === Deno);
try {
delete window.Deno;
} catch {}
assert(denoCopy === Deno);
const { readFile } = Deno;
try {
// @ts-ignore
Deno.readFile = 1;
} catch {}
assert(readFile === Deno.readFile);
try {
delete window.Deno.readFile;
} catch {}
assert(readFile === Deno.readFile);
// @ts-ignore
const { print } = Deno.core;
try {
// @ts-ignore
Deno.core.print = 1;
} catch {}
// @ts-ignore
assert(print === Deno.core.print);
try {
// @ts-ignore
delete Deno.core.print;
} catch {}
// @ts-ignore
assert(print === Deno.core.print);
});
unitTest(async function windowQueueMicrotask(): Promise<void> {
let resolve1: () => void | undefined;
let resolve2: () => void | undefined;
let microtaskDone = false;
const p1 = new Promise((res): void => {
resolve1 = (): void => {
microtaskDone = true;
res();
};
});
const p2 = new Promise((res): void => {
resolve2 = (): void => {
assert(microtaskDone);
res();
};
});
window.queueMicrotask(resolve1!);
setTimeout(resolve2!, 0);
await p1;
await p2;
});