salix/services/loopback/common/methods/item/specs/clone.spec.js

const app = require(`${servicesDir}/item/server/server`);

describe('item clone()', () => {
    let nextItemId;

    beforeEach(async() => {
        let query = `SELECT i1.id + 1 as id FROM vn.item i1
        LEFT JOIN vn.item i2 ON i1.id + 1 = i2.id
        WHERE i2.id IS NULL ORDER BY i1.id LIMIT 1`;

        [nextAvailableId] = await app.models.Item.rawSql(query);
        nextItemId = nextAvailableId.id;
    });

    it('should clone the given item and it should have the expected id', async() => {
        let itemFk = 1;
        let result = await app.models.Item.clone(itemFk);

        expect(result).toEqual(nextItemId);
    });

    it('should attempt to clone the given item but give an error as it doesnt exist', async() => {
        let result;
        try {
            let itemFk = 999;
            result = await app.models.Item.clone(itemFk);
        } catch (error) {
            expect(error.toString()).toContain('Cannot convert undefined or null to object');
        }

        expect(result).toBeFalsy();
    });
});