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denoland-deno/js/test_util.ts
Kitson Kelly a21a5ad2fa Add Deno global namespace (#1748)
Resolves #1705

This PR adds the Deno APIs as a global namespace named `Deno`. For backwards
compatibility, the ability to `import * from "deno"` is preserved. I have tried
to convert every test and internal code the references the module to use the
namespace instead, but because I didn't break compatibility I am not sure.

On the REPL, `deno` no longer exists, replaced only with `Deno` to align with
the regular runtime.

The runtime type library includes both the namespace and module. This means it
duplicates the whole type information. When we remove the functionality from the
runtime, it will be a one line change to the library generator to remove the
module definition from the type library.

I marked a `TODO` in a couple places where to remove the `"deno"` module, but
there are additional places I know I didn't mark.
2019-02-12 10:08:56 -05:00

88 lines
2.5 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
//
// We want to test many ops in deno which have different behavior depending on
// the permissions set. These tests can specify which permissions they expect,
// which appends a special string like "permW1N0" to the end of the test name.
// Here we run several copies of deno with different permissions, filtering the
// tests by the special string. permW0N0 means allow-write but not allow-net.
// See tools/unit_tests.py for more details.
import * as testing from "./deps/https/deno.land/x/std/testing/mod.ts";
export {
assert,
assertEqual
} from "./deps/https/deno.land/x/std/testing/mod.ts";
// testing.setFilter must be run before any tests are defined.
testing.setFilter(Deno.args[1]);
interface DenoPermissions {
read?: boolean;
write?: boolean;
net?: boolean;
env?: boolean;
run?: boolean;
}
function permToString(perms: DenoPermissions): string {
const r = perms.read ? 1 : 0;
const w = perms.write ? 1 : 0;
const n = perms.net ? 1 : 0;
const e = perms.env ? 1 : 0;
const u = perms.run ? 1 : 0;
return `permR${r}W${w}N${n}E${e}U${u}`;
}
function permFromString(s: string): DenoPermissions {
const re = /^permR([01])W([01])N([01])E([01])U([01])$/;
const found = s.match(re);
if (!found) {
throw Error("Not a permission string");
}
return {
read: Boolean(Number(found[1])),
write: Boolean(Number(found[2])),
net: Boolean(Number(found[3])),
env: Boolean(Number(found[4])),
run: Boolean(Number(found[5]))
};
}
export function testPerm(perms: DenoPermissions, fn: testing.TestFunction) {
const name = `${fn.name}_${permToString(perms)}`;
testing.test({ fn, name });
}
export function test(fn: testing.TestFunction) {
testPerm(
{ read: false, write: false, net: false, env: false, run: false },
fn
);
}
test(function permSerialization() {
for (const write of [true, false]) {
for (const net of [true, false]) {
for (const env of [true, false]) {
for (const run of [true, false]) {
for (const read of [true, false]) {
const perms: DenoPermissions = { write, net, env, run, read };
testing.assertEqual(perms, permFromString(permToString(perms)));
}
}
}
}
}
});
// To better catch internal errors, permFromString should throw if it gets an
// invalid permission string.
test(function permFromStringThrows() {
let threw = false;
try {
permFromString("bad");
} catch (e) {
threw = true;
}
testing.assert(threw);
});