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test,tools: refactor custom ESLint for readability

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Refactor the test and the source for the `lowercase-name-for-primitive`
custom ESLint rule for readability.

PR-URL: https://github.com/nodejs/node/pull/21134
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
This commit is contained in:
Rich Trott 2018-06-04 17:34:37 +00:00
parent 41e5253e7c
commit cdd2e96a2d
2 changed files with 14 additions and 28 deletions
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38
test/parallel/test-eslint-lowercase-name-for-primitive.js
View File

@ -7,45 +7,33 @@ common.skipIfEslintMissing();
const RuleTester = require('../../tools/node_modules/eslint').RuleTester; const RuleTester = require('../../tools/node_modules/eslint').RuleTester;
const rule = require('../../tools/eslint-rules/lowercase-name-for-primitive'); const rule = require('../../tools/eslint-rules/lowercase-name-for-primitive');
const valid = [
'string',
'number',
'boolean',
'null',
'undefined'
];
new RuleTester().run('lowercase-name-for-primitive', rule, { new RuleTester().run('lowercase-name-for-primitive', rule, {
valid: [ valid: [
'new errors.TypeError("ERR_INVALID_ARG_TYPE", "a", ["string", "number"])', 'new errors.TypeError("ERR_INVALID_ARG_TYPE", "a", ["string", "number"])',
...valid.map((name) => 'new errors.TypeError("ERR_INVALID_ARG_TYPE", "name", "string")',
`new errors.TypeError("ERR_INVALID_ARG_TYPE", "name", "${name}")` 'new errors.TypeError("ERR_INVALID_ARG_TYPE", "name", "number")',
) 'new errors.TypeError("ERR_INVALID_ARG_TYPE", "name", "boolean")',
'new errors.TypeError("ERR_INVALID_ARG_TYPE", "name", "null")',
'new errors.TypeError("ERR_INVALID_ARG_TYPE", "name", "undefined")',
], ],
invalid: [ invalid: [
{ {
code: 'new errors.TypeError(\'ERR_INVALID_ARG_TYPE\', \'a\', ' + code: "new errors.TypeError('ERR_INVALID_ARG_TYPE', 'a', 'Number')",
'\'Number\')',
errors: [{ message: 'primitive should use lowercase: Number' }], errors: [{ message: 'primitive should use lowercase: Number' }],
output: 'new errors.TypeError(\'ERR_INVALID_ARG_TYPE\', \'a\', ' + output: "new errors.TypeError('ERR_INVALID_ARG_TYPE', 'a', 'number')",
'\'number\')'
}, },
{ {
code: 'new errors.TypeError(\'ERR_INVALID_ARG_TYPE\', \'a\', ' + code: "new errors.TypeError('ERR_INVALID_ARG_TYPE', 'a', 'STRING')",
'\'STRING\')',
errors: [{ message: 'primitive should use lowercase: STRING' }], errors: [{ message: 'primitive should use lowercase: STRING' }],
output: 'new errors.TypeError(\'ERR_INVALID_ARG_TYPE\', \'a\', ' + output: "new errors.TypeError('ERR_INVALID_ARG_TYPE', 'a', 'string')",
'\'string\')'
}, },
{ {
code: 'new errors.TypeError(\'ERR_INVALID_ARG_TYPE\', \'a\', ' + code: "new e.TypeError('ERR_INVALID_ARG_TYPE', a, ['String','Number'])",
'[\'String\', \'Number\']) ',
errors: [ errors: [
{ message: 'primitive should use lowercase: String' }, { message: 'primitive should use lowercase: String' },
{ message: 'primitive should use lowercase: Number' } { message: 'primitive should use lowercase: Number' },
], ],
output: 'new errors.TypeError(\'ERR_INVALID_ARG_TYPE\', \'a\', ' + output: "new e.TypeError('ERR_INVALID_ARG_TYPE', a, ['string','number'])",
'[\'string\', \'number\']) ' },
}
] ]
}); });

4
tools/eslint-rules/lowercase-name-for-primitive.js
View File

@ -12,9 +12,7 @@
const astSelector = 'NewExpression[callee.property.name="TypeError"]' + const astSelector = 'NewExpression[callee.property.name="TypeError"]' +
'[arguments.0.value="ERR_INVALID_ARG_TYPE"]'; '[arguments.0.value="ERR_INVALID_ARG_TYPE"]';
const primitives = [ const primitives = [ 'number', 'string', 'boolean', 'null', 'undefined' ];
'number', 'string', 'boolean', 'null', 'undefined'
];
module.exports = function(context) { module.exports = function(context) {
function checkNamesArgument(node) { function checkNamesArgument(node) {