[std/testing] Function signature of assertObjectEquals() does not accept interfaces

[Seally]

The type Record<PropertyKey, unknown> used in assertObjectEquals() does not accept interface types as an argument. This is due to an intentional quirk in how TypeScript operates with interfaces. With that said, I do not believe this assertion function should disallow inputs that uses types declared with the interface keyword.

import { assertObjectMatch } from "https://deno.land/[email protected]/testing/asserts.ts";

interface NumberToken {
    type: "number";
    value: number;
}

const token: NumberToken = {
    type: "number",
    value: 15
};

assertObjectMatch(token, { type: "number" }); // doesn't work

type TNumberToken = {
    type: "number";
    value: number;
};

const typeToken: TNumberToken = {
    type: "number",
    value: 15
};

assertObjectMatch(typeToken, { type: "number" }); // works

I'm not completely sure what to suggest changing this to, but the most minimal change is to use Record<PropertyKey, any> instead, which seems to work for this case and confirmed to not be a bug from the TypeScript team.

Here are some test inputs for the Record<PropertyKey, any> signature:

// Continued from previous block
function foo(input: Record<PropertyKey, any>) {}

foo(token); // pass
foo(typeToken); // pass
foo(foo); // pass
foo(""); // fail
foo(15); // fail

Relevant issues:

• Types declared as an "interface" do not extend Record<PropertyKey, unknown> microsoft/TypeScript#42825
• Types fulfill an interface, but interfaces do not microsoft/TypeScript#41518

[cola119]

I'm facing this issue too. May I make the p-r to change the props type Record<PropertyKey, unknown> to Record<PropertyKey, any>? I think this change is trivial and there don't seem to be any unexpected problems.

[getspooky]

I fixed #763

[wperron]

Fixed in #763