Creating spy/mock for a member.roles.add

[NicholasJohn16]

I'm trying to mock member.roles.add in a test using vitest, but it's not working. I'm pretty new to testing and some help would be appreciated.

interaction is a mock that's generated like this.

it('adds officer role if user doesn\'t have  role', () => {
    const command = {'id': 'officer', 'name': 'officer', 'type': 1};
    const discord = new MockDiscord({ command });
    const interaction = discord.getInteraction()
    const targetMember = discord.getGuildMember();
    
    interaction.targetMember = targetMember;  
    const spy = vi.spyOn(interaction.targetMember.roles, 'add').mockImplementation(() => true);

    process.env.OFFICER_ROLE_ID = 1;
    officer.execute(interaction);
    expect(spy).toHaveBeenCalled();
});

The test fails because spy is never called and I get an error cause there wasn't a token for the add request. Any ideas how to get it to work? Thanks.

[ckohen]

<member>.roles is dynamically calculated at runtime (its a getter and the manager is recreated every time .roles is called), that is why you are seeing this error.

I can't think of a good way to mock this without having an entire mock api running (which is too much work)

[NicholasJohn16]

I was thinking it was something like that. Would you mind showing me where in the code roles is dynamically calculated? Thank you very much for your reply. Been scratching my head at this all weekend.

[ckohen]

discord.js/packages/discord.js/src/structures/GuildMember.js

Lines 113 to 120 in 6bcebd4

	/**
	* A manager for the roles belonging to this member
	* @type {GuildMemberRoleManager}
	* @readonly
	*/
	get roles() {
	return new GuildMemberRoleManager(this);
	}