import { getNestedSummaryLabel } from '@/components';

describe('getNestedSummaryLabel', () => {
    it('returns string value as-is', () => {
        const labels = ['name', 'age', 'city'];
        expect(getNestedSummaryLabel(labels, 0)).toBe('name');
        expect(getNestedSummaryLabel(labels, 1)).toBe('age');
        expect(getNestedSummaryLabel(labels, 2)).toBe('city');
    });

    it('returns capitalized first key when value is an object', () => {
        const labels = [{ first: 'John', last: 'Doe' }];
        expect(getNestedSummaryLabel(labels, 0)).toBe('First');
    });

    it('handles object with multiple keys', () => {
        const labels = [{ last: 'Doe', first: 'John' }];
        // only the first key should matter
        expect(getNestedSummaryLabel(labels, 0)).toBe('Last');
    });

    it('handles empty object', () => {
        const labels = [{}];
        expect(getNestedSummaryLabel(labels, 0)).toBe('');
    });

    it('handles null and undefined values safely', () => {
        const labels = [null, undefined];
        expect(getNestedSummaryLabel(labels, 0)).toBe('null');
        expect(getNestedSummaryLabel(labels, 1)).toBe('undefined');
    });
});