prefer-to-be-truthy.test.ts

import { describe, it } from 'vitest'
import ruleTester from '../utils/tester'
import rule, { RULE_NAME } from './prefer-to-be-truthy'

const messageId = 'preferToBeTruthy'

describe(RULE_NAME, () => {
	it(RULE_NAME, () => {
		ruleTester.run(RULE_NAME, rule, {
			valid: [
				'[].push(true)',
				'expect("something");',
				'expect(true).toBeTrue();',
				'expect(false).toBeTrue();',
				'expect(fal,se).toBeFalse();',
				'expect(true).toBeFalse();',
				'expect(value).toEqual();',
				'expect(value).not.toBeTrue();',
				'expect(value).not.toEqual();',
				'expect(value).toBe(undefined);',
				'expect(value).not.toBe(undefined);',
				'expect(true).toBe(false)',
				'expect(value).toBe();',
				'expect(true).toMatchSnapshot();',
				'expect("a string").toMatchSnapshot(true);',
				'expect("a string").not.toMatchSnapshot();',
				'expect(something).toEqual(\'a string\');',
				'expect(true).toBe',
				'expectTypeOf(true).toBe()'
			],
			invalid: [
				{
					code: 'expect(false).toBe(true);',
					output: 'expect(false).toBeTruthy();',
					errors: [{ messageId, column: 15, line: 1 }]
				},
				{
					code: 'expectTypeOf(false).toBe(true);',
					output: 'expectTypeOf(false).toBeTruthy();',
					errors: [{ messageId, column: 21, line: 1 }]
				},
				{
					code: 'expect(wasSuccessful).toEqual(true);',
					output: 'expect(wasSuccessful).toBeTruthy();',
					errors: [{ messageId, column: 23, line: 1 }]
				},
				{
					code: 'expect(fs.existsSync(\'/path/to/file\')).toStrictEqual(true);',
					output: 'expect(fs.existsSync(\'/path/to/file\')).toBeTruthy();',
					errors: [{ messageId, column: 40, line: 1 }]
				},
				{
					code: 'expect("a string").not.toBe(true);',
					output: 'expect("a string").not.toBeTruthy();',
					errors: [{ messageId, column: 24, line: 1 }]
				},
				{
					code: 'expect("a string").not.toEqual(true);',
					output: 'expect("a string").not.toBeTruthy();',
					errors: [{ messageId, column: 24, line: 1 }]
				},
				{
					code: 'expectTypeOf("a string").not.toStrictEqual(true);',
					output: 'expectTypeOf("a string").not.toBeTruthy();',
					errors: [{ messageId, column: 30, line: 1 }]
				}
			]
		})
	})
})