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import { diff } from 'jest-diff';
import { isObject, mapValues, isEqual } from 'lodash';
export const toHaveTrackingAttributes = (actual, obj) => {
if (!(actual instanceof Element)) {
return { actual, message: () => 'The received value must be an Element.', pass: false };
}
if (!isObject(obj)) {
return {
message: () => `The matching object must be an object. Found ${obj}.`,
pass: false,
};
}
const actualAttributes = mapValues(obj, (val, key) => actual.getAttribute(`data-track-${key}`));
const matcherPass = isEqual(actualAttributes, obj);
const failMessage = () => {
// We can match, but still fail because we're in a `expect...not.` context
if (matcherPass) {
return `Expected the element's tracking attributes not to match. Found that they matched ${JSON.stringify(
obj,
)}.`;
}
const objDiff = diff(actualAttributes, obj);
return `Expected the element's tracking attributes to match the given object. Diff:
${objDiff}
`;
};
return { actual, message: failMessage, pass: matcherPass };
};
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