eslint-plugin-jest/lib/rules/__tests__/require-tothrow-message.test.js

Eslint rules for Jest

'use strict';

const _require = require('eslint'),
      RuleTester = _require.RuleTester;

const rule = require('../require-tothrow-message');

const ruleTester = new RuleTester({
  parserOptions: {
    ecmaVersion: 6
  }
});
ruleTester.run('require-tothrow-message', rule, {
  valid: [// String
  "expect(() => { throw new Error('a'); }).toThrow('a');", "expect(() => { throw new Error('a'); }).toThrowError('a');", // Template literal
  "const a = 'a'; expect(() => { throw new Error('a'); }).toThrow(`${a}`);", // Regex
  "expect(() => { throw new Error('a'); }).toThrow(/^a$/);", // Function
  "expect(() => { throw new Error('a'); })" + ".toThrow((() => { return 'a'; })());", // Allow no message for `not`.
  "expect(() => { throw new Error('a'); }).not.toThrow();"],
  invalid: [// Empty toThrow
  {
    code: "expect(() => { throw new Error('a'); }).toThrow();",
    errors: [{
      messageId: 'requireRethrow',
      data: {
        propertyName: 'toThrow'
      },
      column: 41,
      line: 1
    }]
  }, // Empty toThrowError
  {
    code: "expect(() => { throw new Error('a'); }).toThrowError();",
    errors: [{
      messageId: 'requireRethrow',
      data: {
        propertyName: 'toThrowError'
      },
      column: 41,
      line: 1
    }]
  }]
});