forked from jsx-eslint/eslint-plugin-react
/
Component.js
98 lines (89 loc) · 2.82 KB
/
Component.js
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'use strict';
const assert = require('assert');
const eslint = require('eslint');
const values = require('object.values');
const Components = require('../../lib/util/Components');
const parsers = require('../helpers/parsers');
const ruleTester = new eslint.RuleTester({
parserOptions: {
ecmaVersion: 2018,
sourceType: 'module',
ecmaFeatures: {
jsx: true,
},
},
});
describe('Components', () => {
describe('static detect', () => {
function testComponentsDetect(test, done) {
const rule = Components.detect((context, components, util) => ({
'Program:exit'() {
done(context, components, util);
},
}));
const tests = {
valid: parsers.all([Object.assign({}, test, {
settings: {
react: {
version: 'detect',
},
},
})]),
invalid: [],
};
ruleTester.run(test.code, rule, tests);
}
it('should detect Stateless Function Component', () => {
testComponentsDetect({
code: `import React from 'react'
function MyStatelessComponent() {
return <React.Fragment />;
}`,
}, (_context, components) => {
assert.equal(components.length(), 1, 'MyStatelessComponent should be detected component');
values(components.list()).forEach((component) => {
assert.equal(
component.node.id.name,
'MyStatelessComponent',
'MyStatelessComponent should be detected component'
);
});
});
});
it('should detect Class Components', () => {
testComponentsDetect({
code: `import React from 'react'
class MyClassComponent extends React.Component {
render() {
return <React.Fragment />;
}
}`,
}, (_context, components) => {
assert(components.length() === 1, 'MyClassComponent should be detected component');
values(components.list()).forEach((component) => {
assert.equal(
component.node.id.name,
'MyClassComponent',
'MyClassComponent should be detected component'
);
});
});
});
it('should detect React Imports', () => {
testComponentsDetect({
code: 'import React, { useCallback, useState } from \'react\'',
}, (_context, components) => {
assert.deepEqual(
components.getDefaultReactImports().map((specifier) => specifier.local.name),
['React'],
'default React import identifier should be "React"'
);
assert.deepEqual(
components.getNamedReactImports().map((specifier) => specifier.local.name),
['useCallback', 'useState'],
'named React import identifiers should be "useCallback" and "useState"'
);
});
});
});
});