prefer-to-contain.test.ts

import { TSESLint } from '@typescript-eslint/utils';
import dedent from 'dedent';
import rule from '../prefer-to-contain';
import { espreeParser } from './test-utils';

const ruleTester = new TSESLint.RuleTester({
  parser: espreeParser,
  parserOptions: {
    ecmaVersion: 2015,
  },
});

ruleTester.run('prefer-to-contain', rule, {
  valid: [
    'expect.hasAssertions',
    'expect.hasAssertions()',
    'expect.assertions(1)',
    'expect().toBe(false);',
    'expect(a).toContain(b);',
    "expect(a.name).toBe('b');",
    'expect(a).toBe(true);',
    `expect(a).toEqual(b)`,
    `expect(a.test(c)).toEqual(b)`,
    `expect(a.includes(b)).toEqual()`,
    `expect(a.includes(b)).toEqual("test")`,
    `expect(a.includes(b)).toBe("test")`,
    `expect(a.includes()).toEqual()`,
    `expect(a.includes()).toEqual(true)`,
    `expect(a.includes(b,c)).toBe(true)`,
    `expect([{a:1}]).toContain({a:1})`,
    `expect([1].includes(1)).toEqual`,
    `expect([1].includes).toEqual`,
    `expect([1].includes).not`,
    `expect(a.test(b)).resolves.toEqual(true)`,
    `expect(a.test(b)).resolves.not.toEqual(true)`,
    `expect(a).not.toContain(b)`,
    'expect(a.includes(...[])).toBe(true)',
    'expect(a.includes(b)).toBe(...true)',
    'expect(a);',
  ],
  invalid: [
    {
      code: 'expect(a.includes(b)).toEqual(true);',
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
    {
      code: "expect(a['includes'](b)).toEqual(true);",
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 26, line: 1 }],
    },
    {
      code: "expect(a['includes'](b))['toEqual'](true);",
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 26, line: 1 }],
    },
    {
      code: "expect(a['includes'](b)).toEqual(false);",
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 26, line: 1 }],
    },
    {
      code: "expect(a['includes'](b)).not.toEqual(false);",
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 30, line: 1 }],
    },
    {
      code: "expect(a['includes'](b))['not'].toEqual(false);",
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 33, line: 1 }],
    },
    {
      code: "expect(a['includes'](b))['not']['toEqual'](false);",
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 33, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).toEqual(false);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).not.toEqual(false);',
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 27, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).not.toEqual(true);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 27, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).toBe(true);',
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).toBe(false);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).not.toBe(false);',
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 27, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).not.toBe(true);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 27, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).toStrictEqual(true);',
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).toStrictEqual(false);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).not.toStrictEqual(false);',
      output: 'expect(a).toContain(b);',
      errors: [{ messageId: 'useToContain', column: 27, line: 1 }],
    },
    {
      code: 'expect(a.includes(b)).not.toStrictEqual(true);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 27, line: 1 }],
    },
    {
      code: 'expect(a.test(t).includes(b.test(p))).toEqual(true);',
      output: 'expect(a.test(t)).toContain(b.test(p));',
      errors: [{ messageId: 'useToContain', column: 39, line: 1 }],
    },
    {
      code: 'expect(a.test(t).includes(b.test(p))).toEqual(false);',
      output: 'expect(a.test(t)).not.toContain(b.test(p));',
      errors: [{ messageId: 'useToContain', column: 39, line: 1 }],
    },
    {
      code: 'expect(a.test(t).includes(b.test(p))).not.toEqual(true);',
      output: 'expect(a.test(t)).not.toContain(b.test(p));',
      errors: [{ messageId: 'useToContain', column: 43, line: 1 }],
    },
    {
      code: 'expect(a.test(t).includes(b.test(p))).not.toEqual(false);',
      output: 'expect(a.test(t)).toContain(b.test(p));',
      errors: [{ messageId: 'useToContain', column: 43, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).toBe(true);',
      output: 'expect([{a:1}]).toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 33, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).toBe(false);',
      output: 'expect([{a:1}]).not.toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 33, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).not.toBe(true);',
      output: 'expect([{a:1}]).not.toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 37, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).not.toBe(false);',
      output: 'expect([{a:1}]).toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 37, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).toStrictEqual(true);',
      output: 'expect([{a:1}]).toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 33, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).toStrictEqual(false);',
      output: 'expect([{a:1}]).not.toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 33, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).not.toStrictEqual(true);',
      output: 'expect([{a:1}]).not.toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 37, line: 1 }],
    },
    {
      code: 'expect([{a:1}].includes({a:1})).not.toStrictEqual(false);',
      output: 'expect([{a:1}]).toContain({a:1});',
      errors: [{ messageId: 'useToContain', column: 37, line: 1 }],
    },
    {
      code: dedent`
        import { expect as pleaseExpect } from '@jest/globals';

        pleaseExpect([{a:1}].includes({a:1})).not.toStrictEqual(false);
      `,
      output: dedent`
        import { expect as pleaseExpect } from '@jest/globals';

        pleaseExpect([{a:1}]).toContain({a:1});
      `,
      parserOptions: { sourceType: 'module' },
      errors: [{ messageId: 'useToContain', column: 43, line: 3 }],
    },
  ],
});

new TSESLint.RuleTester({
  parser: require.resolve('@typescript-eslint/parser'),
}).run('prefer-to-be-null: typescript edition', rule, {
  valid: [
    "(expect('Model must be bound to an array if the multiple property is true') as any).toHaveBeenTipped()",
    'expect(a.includes(b)).toEqual(0 as boolean);',
  ],
  invalid: [
    {
      code: 'expect(a.includes(b)).toEqual(false as boolean);',
      output: 'expect(a).not.toContain(b);',
      errors: [{ messageId: 'useToContain', column: 23, line: 1 }],
    },
  ],
});