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index.js
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index.js
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import global, { describe } from 'global';
import addons, { mockChannel } from '@storybook/addons';
import ensureOptionsDefaults from './ensureOptionsDefaults';
import snapshotsTests from './snapshotsTestsTemplate';
import integrityTest from './integrityTestTemplate';
import loadFramework from '../frameworks/frameworkLoader';
global.STORYBOOK_REACT_CLASSES = global.STORYBOOK_REACT_CLASSES || {};
const methods = ['beforeAll', 'beforeEach', 'afterEach', 'afterAll'];
function callTestMethodGlobals(testMethod) {
methods.forEach(method => {
if (typeof testMethod[method] === 'function') {
global[method](testMethod[method]);
}
});
}
const isDisabled = parameter => parameter === false || (parameter && parameter.disable === true);
function testStorySnapshots(options = {}) {
if (typeof describe !== 'function') {
throw new Error('testStorySnapshots is intended only to be used inside jest');
}
addons.setChannel(mockChannel());
const { storybook, framework, renderTree, renderShallowTree } = loadFramework(options);
const {
asyncJest,
suite,
storyNameRegex,
storyKindRegex,
stories2snapsConverter,
testMethod,
integrityOptions,
snapshotSerializers,
} = ensureOptionsDefaults(options);
const testMethodParams = {
renderTree,
renderShallowTree,
stories2snapsConverter,
};
const data = storybook
.raw()
.filter(({ name }) => (storyNameRegex ? name.match(storyNameRegex) : true))
.filter(({ kind }) => (storyKindRegex ? kind.match(storyKindRegex) : true))
.reduce((acc, item) => {
const { kind, storyFn: render, parameters } = item;
const existing = acc.find(i => i.kind === kind);
const { fileName } = item.parameters;
if (!isDisabled(parameters.storyshots)) {
if (existing) {
existing.children.push({ ...item, render, fileName });
} else {
acc.push({
kind,
children: [{ ...item, render, fileName }],
});
}
}
return acc;
}, []);
if (data.length) {
callTestMethodGlobals(testMethod);
snapshotsTests({
data,
asyncJest,
suite,
framework,
testMethod,
testMethodParams,
snapshotSerializers,
});
integrityTest(integrityOptions, stories2snapsConverter);
} else {
throw new Error('storyshots found 0 stories');
}
}
export default testStorySnapshots;