Angular中十进制验证器的单元测试

import { FormControl } from '@angular/forms';
import { decimalValidator } from './decimal.validator';

describe('Decimal Validator', () => {
  it('should return null if the input is a valid decimal number', () => {
    const control = new FormControl('123.45');
    const result = decimalValidator(control);
    expect(result).toBeNull();
  });

  it('should return an error object if the input is not a valid decimal number', () => {
    const control = new FormControl('abc');
    const result = decimalValidator(control);
    expect(result).toEqual({ decimal: true });
  });

  it('should return an error object if the input is outside the specified range', () => {
    const control = new FormControl('1000');
    const result = decimalValidator(control);
    expect(result).toEqual({ decimalRange: true });
  });
});