@fgv/ts-utils-jest/dist/matchers/toFailTestWith/predicate.js

Custom matchers for ts-utils result class

/* eslint-disable @typescript-eslint/no-unused-vars */
import { equals } from '@jest/expect-utils';
import { stringify } from 'jest-matcher-utils';
import { captureResult, fail, succeed } from '../../ts-utils';
export const matcherName = 'toFailTestWith';
export function predicate(cb, expected) {
    const cbResult = captureResult(() => cb());
    if (cbResult.isFailure()) {
        let success = false;
        if (expected instanceof RegExp) {
            success = cbResult.message.match(expected) !== null;
        }
        else if (typeof expected === 'string') {
            success = cbResult.message === expected;
        }
        else if (Array.isArray(expected)) {
            success = equals(cbResult.message.split('\n'), expected);
        }
        else {
            return fail(`Unsupported expected value "${stringify(expected)}" for toFailTestWith`);
        }
        return success ? succeed(cbResult.message) : fail(cbResult.message);
    }
    return fail('');
}
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