@ethereum-waffle/chai/dist/esm/src/matchers/hexEqual.js

A sweet set of chai matchers for your blockchain testing needs.

export function supportHexEqual(Assertion) {
    Assertion.addMethod('hexEqual', function (other) {
        const subject = this._obj;
        const isNegated = this.__flags.negate === true;
        const isHex = (a) => /^0x[0-9a-fA-F]*$/.test(a);
        for (const element of [subject, other]) {
            if (!isHex(element)) {
                this.assert(isNegated, `Expected "${subject}" to be a hex string equal to "${other}", but "${element}" is not a valid hex string`, `Expected "${subject}" not to be a hex string equal to "${other}", but "${element}" is not a valid hex string`);
            }
        }
        const extractNumeric = (hex) => hex.replace(/^0x0*/, '');
        this.assert(extractNumeric(subject.toLowerCase()) === extractNumeric(other.toLowerCase()), `Expected "${subject}" to be a hex string equal equal to "${other}"`, `Expected "${subject}" not to a hex string equal be equal to "${other}", but it was`, `Hex string representing the same number as ${other}`, subject);
    });
}
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