js-data-schema/src/data-parsers/array-type-parser.spec.js

import {expect} from 'chai';
import {DataParsingError} from '../errors/index.js';
import {ServiceContainer} from '@e22m4u/js-service';
import {arrayTypeParser} from './array-type-parser.js';
import {DATA_TYPE_LIST, DataType} from '../data-type.js';
import {EmptyValuesService} from '@e22m4u/js-empty-values';

describe('arrayTypeParser', function () {
  it('should return a value as is when a non-array schema is given', function () {
    const container = new ServiceContainer();
    const dataTypes = DATA_TYPE_LIST.filter(v => v !== DataType.ARRAY);
    const values = ['str', '', 10, 0, true, false, [], {}, undefined, null];
    const parse = type => {
      values.forEach(value => {
        const res = arrayTypeParser(value, {type}, undefined, container);
        expect(res).to.be.eql(value);
      });
    };
    dataTypes.forEach(parse);
  });

  it('should return an array value as is when the array schema is given', function () {
    const container = new ServiceContainer();
    const value = [];
    const res = arrayTypeParser(
      value,
      {type: DataType.ARRAY},
      undefined,
      container,
    );
    expect(res).to.be.eq(value);
  });

  it('should parse a json string when the array schema is given', function () {
    const container = new ServiceContainer();
    const value = '[1, 2, 3]';
    const res = arrayTypeParser(
      value,
      {type: DataType.ARRAY},
      undefined,
      container,
    );
    expect(res).to.be.eql([1, 2, 3]);
  });

  it('should return an empty value as is when the array schema is given', function () {
    const container = new ServiceContainer();
    const emptyValues = container.get(EmptyValuesService);
    emptyValues.setEmptyValuesOf(DataType.ARRAY, [undefined]);
    const res = arrayTypeParser(
      undefined,
      {type: DataType.ARRAY},
      undefined,
      container,
    );
    expect(res).to.be.undefined;
  });

  it('should throw an error for a non-array value when the array schema is given', function () {
    const container = new ServiceContainer();
    const values = ['str', '', 10, 0, true, false, {}];
    const dataType = DataType.ARRAY;
    const parse = value => {
      const throwable = () =>
        arrayTypeParser(value, {type: dataType}, undefined, container);
      expect(throwable).to.throw(DataParsingError);
    };
    values.forEach(parse);
  });

  it('should pass correct arguments to the DataParsingError', function () {
    const container = new ServiceContainer();
    const value = Symbol();
    const dataType = DataType.ARRAY;
    const sourcePath = 'aSource';
    let error;
    try {
      arrayTypeParser(value, {type: dataType}, {sourcePath}, container);
    } catch (e) {
      error = e;
    }
    expect(error.value).to.be.eq(value);
    expect(error.targetType).to.be.eq(dataType);
    expect(error.sourcePath).to.be.eq(sourcePath);
  });

  it('should ignore parsing errors when the "noParsingErrors" option is true', function () {
    const container = new ServiceContainer();
    const value = Symbol();
    const res = arrayTypeParser(
      value,
      {type: DataType.ARRAY},
      {noParsingErrors: true},
      container,
    );
    expect(res).to.be.eq(value);
  });
});