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46 lines
1.7 KiB
46 lines
1.7 KiB
const { expect } = require('chai');
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/** Revert handler that supports custom errors. */
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async function expectRevertCustomError(promise, expectedErrorName, args) {
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if (!Array.isArray(args)) {
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expect.fail('Expected 3rd array parameter for error arguments');
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}
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await promise.then(
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() => expect.fail("Expected promise to throw but it didn't"),
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({ message }) => {
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// The revert message for custom errors looks like:
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// VM Exception while processing transaction:
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// reverted with custom error 'InvalidAccountNonce("0x70997970C51812dc3A010C7d01b50e0d17dc79C8", 0)'
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// We trim out anything inside the single quotes as comma-separated values
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const [, error] = message.match(/'(.*)'/);
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// Attempt to parse as an error
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const match = error.match(/(?<name>\w+)\((?<args>.*)\)/);
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if (!match) {
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expect.fail(`Couldn't parse "${error}" as a custom error`);
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}
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// Extract the error name and parameters
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const errorName = match.groups.name;
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const argMatches = [...match.groups.args.matchAll(/-?\w+/g)];
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// Assert error name
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expect(errorName).to.be.equal(
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expectedErrorName,
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`Unexpected custom error name (with found args: [${argMatches.map(([a]) => a)}])`,
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);
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// Coerce to string for comparison since `arg` can be either a number or hex.
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const sanitizedExpected = args.map(arg => arg.toString().toLowerCase());
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const sanitizedActual = argMatches.map(([arg]) => arg.toString().toLowerCase());
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// Assert argument equality
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expect(sanitizedActual).to.have.members(sanitizedExpected, `Unexpected ${errorName} arguments`);
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},
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);
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}
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module.exports = {
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expectRevertCustomError,
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};
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