node-redis/packages/client/lib/commands/COMMAND_INFO.spec.ts

import { strict as assert } from 'assert';
import testUtils, { GLOBAL } from '../test-utils';
import { transformArguments } from './COMMAND_INFO';
import { CommandCategories, CommandFlags, CommandReply } from './generic-transformers';

export function assertPingCommand(commandInfo: CommandReply | null | undefined): void {
    assert.deepEqual(
        commandInfo,
        {
            name: 'ping',
            arity: -1,
            flags: new Set([CommandFlags.STALE, CommandFlags.FAST]),
            firstKeyIndex: 0,
            lastKeyIndex: 0,
            step: 0,
            categories: new Set(
                testUtils.isVersionGreaterThan([6]) ?
                    [CommandCategories.FAST, CommandCategories.CONNECTION] :
                    []
            )
        }
    );
}

describe('COMMAND INFO', () => {
    it('transformArguments', () => {
        assert.deepEqual(
            transformArguments(['PING']),
            ['COMMAND', 'INFO', 'PING']
        );
    });

    describe('client.commandInfo', () => {
        testUtils.testWithClient('PING', async client => {
            assertPingCommand((await client.commandInfo(['PING']))[0]);
        }, GLOBAL.SERVERS.OPEN);

        testUtils.testWithClient('DOSE_NOT_EXISTS', async client => {
            assert.deepEqual(
                await client.commandInfo(['DOSE_NOT_EXISTS']),
                [null]
            );
        }, GLOBAL.SERVERS.OPEN);
    });


});