import { describe, it, expect, beforeEach, jest } from '@jest/globals';
import { ListDatasetsUseCase } from '../../../src/use-cases/list-datasets-use-case.js';
import type { DatasetStoragePort } from '../../../src/ports/secondary/dataset-storage-port.js';
import type { DatasetSchema } from '../../../src/domain/entities/dataset-schema.js';
import { FieldType } from '../../../src/domain/value-objects/field-type.js';
describe('ListDatasetsUseCase', () => {
let useCase: ListDatasetsUseCase;
let mockStorage: jest.Mocked<DatasetStoragePort>;
const mockSchemas: DatasetSchema[] = [
{
id: 'dataset1',
name: 'Dataset 1',
description: 'First dataset',
fields: [
{ name: 'id', type: FieldType.Number, isKey: true, isLookupKey: false },
],
keyField: 'id',
lookupKeys: [],
visibleFields: ['id'],
limits: { defaultLimit: 10, maxLimit: 100 },
},
{
id: 'dataset2',
name: 'Dataset 2',
description: 'Second dataset',
fields: [
{ name: 'id', type: FieldType.String, isKey: true, isLookupKey: false },
],
keyField: 'id',
lookupKeys: [],
visibleFields: ['id'],
limits: { defaultLimit: 20, maxLimit: 200 },
},
];
beforeEach(() => {
mockStorage = {
listSchemas: jest.fn(),
loadDataset: jest.fn(),
loadById: jest.fn(),
} as jest.Mocked<DatasetStoragePort>;
useCase = new ListDatasetsUseCase(mockStorage);
});
describe('execute', () => {
it('should return all dataset schemas', async () => {
mockStorage.listSchemas.mockReturnValue(mockSchemas);
const result = await useCase.execute();
expect(result).toEqual(mockSchemas);
expect(result).toHaveLength(2);
expect(mockStorage.listSchemas).toHaveBeenCalledTimes(1);
});
it('should return empty array when no datasets exist', async () => {
mockStorage.listSchemas.mockReturnValue([]);
const result = await useCase.execute();
expect(result).toEqual([]);
expect(result).toHaveLength(0);
});
it('should return single dataset schema', async () => {
mockStorage.listSchemas.mockReturnValue([mockSchemas[0]]);
const result = await useCase.execute();
expect(result).toHaveLength(1);
expect(result[0].id).toBe('dataset1');
});
});
});
