no-loss-of-precision.test.ts

import rule from '../../src/rules/no-loss-of-precision';
import { RuleTester } from '../RuleTester';

const ruleTester = new RuleTester({
  parser: '@typescript-eslint/parser',
});

ruleTester.run('no-loss-of-precision', rule, {
  valid: [
    'const x = 12345;',
    'const x = 123.456;',
    'const x = -123.456;',
    'const x = 123_456;',
    'const x = 123_00_000_000_000_000_000_000_000;',
    'const x = 123.000_000_000_000_000_000_000_0;',
  ],
  invalid: [
    {
      code: 'const x = 9007199254740993;',
      errors: [{ messageId: 'noLossOfPrecision' }],
    },
    {
      code: 'const x = 9_007_199_254_740_993;',
      errors: [{ messageId: 'noLossOfPrecision' }],
    },
    {
      code: 'const x = 9_007_199_254_740.993e3;',
      errors: [{ messageId: 'noLossOfPrecision' }],
    },
    {
      code:
        'const x = 0b100_000_000_000_000_000_000_000_000_000_000_000_000_000_000_000_000_001;',
      errors: [{ messageId: 'noLossOfPrecision' }],
    },
  ],
});