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| import sinon from 'sinon';
import React from 'react';
import { mount, shallow } from 'enzyme';
import assert from 'assert';
import _ from 'lodash';
import glob from 'glob';
import { shallowToJson } from 'enzyme-to-json';
import * as lucid from '../index';
// Common tests for all our components
export function common(Component, {
getDefaultProps = _.constant({}),
exemptFunctionProps = [],
exemptChildComponents = [],
selectRoot = _.identity,
} = {}) {
function generateDefaultProps(props={}) {
return _.assign({}, getDefaultProps(), props);
}
describe('[common]', () => {
it('should have a `displayName` defined', () => {
assert(Component.displayName);
});
it('should pass through styles to the root element', () => {
let style = {
backgroundColor: '#f0f',
};
const wrapper = shallow(<Component {...generateDefaultProps()} style={style}/>);
const rootWrapper = selectRoot(wrapper).first();
const rootStyle = rootWrapper.prop('style');
assert(_.every(style, (val, key) => val === rootStyle[key]), 'root style must contain passed styles');
});
it('should pass through `className`', () => {
const expectedClass = 'rAnDoM';
const wrapper = shallow(<Component {...generateDefaultProps()} className={expectedClass}/>);
const rootWrapper = selectRoot(wrapper).first();
const classNames = rootWrapper.prop('className').split(' ');
assert(_.includes(classNames, expectedClass), `'${classNames}' should include '${expectedClass}'`);
});
it('should have an application scoped base class', () => {
const expectedClass = 'lucid-' + Component.displayName;
const wrapper = shallow(<Component {...generateDefaultProps()} />);
const rootWrapper = selectRoot(wrapper).first();
const classNames = rootWrapper.prop('className').split(' ');
assert(_.includes(classNames, expectedClass), `'${classNames}' should include '${Component.displayName}'`);
});
it('should have only application scoped classes', () => {
const wrapper = shallow(<Component {...generateDefaultProps()} />);
const rootWrapper = selectRoot(wrapper).first();
const parentClasses = rootWrapper.prop('className').split(' ');
const childrenClasses = rootWrapper.children().reduce((acc, node) => {
if (!node.prop('className')) {
return acc;
}
return acc.concat(node.prop('className').split(' '))
}, []);
const allClasses = parentClasses.concat(childrenClasses);
_.forEach(allClasses, className => {
assert(_.includes(className, `lucid-${Component.displayName}`), `${className} must be scoped`);
});
});
describe('function propTypes', () => {
const funcProps = _.pickBy(Component.propTypes, propType => propType === React.PropTypes.func);
_.forEach(funcProps, (propType, propName) => {
it(`${propName} should only use onX convention for function proptypes`, () => {
assert(_.startsWith(propName, 'on') || _.includes(exemptFunctionProps, propName), `${propName} must follow onX convention`);
});
});
});
describe('child components', () => {
const childComponents = _.omit(Component.definition.statics, [
'_isPrivate',
'definition',
'propName',
'reducers',
'selectors',
]);
describe('propNames in propTypes', () => {
_.chain(childComponents)
.map('propName')
.compact()
.flatMap(_.castArray)
.reject(propName => _.includes(exemptChildComponents, propName))
.forEach(propName => {
it(`should include ${propName} in propTypes`, () => {
assert(Component.propTypes[propName], `must include ${propName} in propTypes`);
});
})
.value();
});
});
describe('example testing', () => {
const examples = glob.sync(`./src/components/**/${Component.displayName}/examples/*.jsx`).map(path => require('../../' + path).default);
_.each(examples, Example => {
it(`should match snapshot(s) for ${Example.displayName}`, () => {
const shallowExample = shallow(<Example />);
// If the root of the example is an instance of the Component under test, snapshot it.
// Otherwise, look under the root for instances of the Component and snapshot those.
if (shallowExample.is(Component.displayName)) {
expect(shallowToJson(shallow(<Component {...shallowExample.props()} />))).toMatchSnapshot();
} else {
shallowExample.find(Component).forEach(example => {
expect(shallowToJson(shallow(<Component {...example.props()} />))).toMatchSnapshot();
});
}
});
});
});
// Only run this test if it's a public component
if (!Component._isPrivate) {
it('should be available as an exported module from index.js', () => {
assert(lucid[Component.displayName]);
});
}
});
}
// Common tests for all our icon components
export function icons(Component) {
describe('[icon]', () => {
it('should add the correct class for isClickable', () => {
const wrapper = mount(<Component isClickable={true} />);
const targetClassName = 'lucid-Icon-is-clickable';
assert(wrapper.find('svg').hasClass(targetClassName), `Missing '${targetClassName}' class`);
});
});
}
// Common tests for all control components
export function controls(Component, { callbackName, controlSelector , eventType, additionalProps={} }) {
// Use DOM tests here since some of our controls use dom events under the hood
describe('[control]', () => {
it('should callback with `event` and `props`', () => {
const expectedSpecialProp = 32;
const props = {
specialProp: expectedSpecialProp,
[callbackName]: sinon.spy(),
...additionalProps,
};
const wrapper = mount(<Component {...props} />);
wrapper.find(controlSelector).simulate(eventType);
// Last argument should be an object with `uniqueId` and `event`
const { props: { specialProp }, event } = _.last(props[callbackName].args[0]);
assert(event, 'missing event');
assert.equal(specialProp, expectedSpecialProp, 'incorrect or missing specialProp');
});
});
}
|