cheke/__tests__/hasErrors.test.js

Express request validator with object's style response body and inspired by Laravel's Validator

const hasErrors = require('../src/hasErrors');

describe('hasErrors', () => {
  test("should return false if you don't provide reqRules", () =>
    hasErrors().then(res => {
      expect(res).toBeFalsy();
    }));

  test("should return name's rule can not be empty", () =>
    hasErrors({ reqRules: { name: {} } }).catch(err => {
      expect(err.message).toBe("name's rule can not be empty");
    }));

  test("should return name's rule can not be empty", () =>
    hasErrors({ reqRules: { name: { type: '' } } }).catch(err => {
      expect(err.message).toBe("name's rule can not be empty");
    }));

  test("should return name's rule can not be empty", () =>
    hasErrors({ reqRules: { name: '' } }).catch(err => {
      expect(err.message).toBe("name's rule can not be empty");
    }));

  test('should return The name field is required.', () =>
    hasErrors({ reqRules: { name: 'required' } }).then(res => {
      expect(res.name.message).toBe('The name field is required.');
    }));

  test('should return The age must be a number', () =>
    hasErrors({
      data: { age: '21k' },
      reqRules: { age: 'number' },
    }).then(res => {
      expect(res.age.message).toBe('The age must be a number.');
    }));

  test('should return The age must be a number', () =>
    hasErrors({
      data: { age: '21' },
      reqRules: { page: 'number' },
    }).then(res => {
      expect(res.age.message).toBe('age is not allowed.');
    }));

  test('should return The age must be a number', () =>
    hasErrors({
      data: { age: 21 },
      reqRules: { age: 'number' },
    }).then(res => {
      expect(res).toBe(false);
    }));

  describe('object rules', () => {
    test('should return The name field is required.', () =>
      hasErrors({ reqRules: { name: { label: 'Name', type: 'required' } } }).then(res => {
        expect(res.name.message).toBe('The Name field is required.');
      }));

    test('should return `The age must be a number.`', () =>
      hasErrors({
        data: { age: 'age' },
        reqRules: { age: { label: 'age', type: 'number' } },
      }).then(res => {
        expect(res.age.message).toBe('The age must be a number.');
      }));
  });

  describe('no required rules', () => {
    test('should return false.', () =>
      hasErrors({ reqRules: { name: { label: 'Name', type: 'string' } } }).then(res => {
        expect(res).toBeFalsy();
      }));
  });
});