/
prefer-to-be-undefined.test.js
67 lines (63 loc) · 1.6 KB
/
prefer-to-be-undefined.test.js
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'use strict';
const { RuleTester } = require('eslint');
const rule = require('../prefer-to-be-undefined');
const ruleTester = new RuleTester();
ruleTester.run('prefer-to-be-undefined', rule, {
valid: [
'expect(undefined).toBeUndefined();',
'expect(true).not.toBeUndefined();',
'expect({}).toEqual({});',
'expect(null).toEqual(null);',
'expect(something).toBe(somethingElse)',
'expect(something).toEqual(somethingElse)',
'expect(something).not.toBe(somethingElse)',
'expect(something).not.toEqual(somethingElse)',
'expect(undefined).toBe',
],
invalid: [
{
code: 'expect(undefined).toBe(undefined);',
errors: [
{
message: 'Use toBeUndefined() instead',
column: 19,
line: 1,
},
],
output: 'expect(undefined).toBeUndefined();',
},
{
code: 'expect(undefined).toEqual(undefined);',
errors: [
{
message: 'Use toBeUndefined() instead',
column: 19,
line: 1,
},
],
output: 'expect(undefined).toBeUndefined();',
},
{
code: 'expect("a string").not.toBe(undefined);',
errors: [
{
message: 'Use toBeUndefined() instead',
column: 24,
line: 1,
},
],
output: 'expect("a string").not.toBeUndefined();',
},
{
code: 'expect("a string").not.toEqual(undefined);',
errors: [
{
message: 'Use toBeUndefined() instead',
column: 24,
line: 1,
},
],
output: 'expect("a string").not.toBeUndefined();',
},
],
});