| 1 | function EqualityError(message, actual, expected) {
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| 2 | this.message = message;
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| 3 | this.actual = actual;
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| 4 | this.expected = expected;
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| 5 | this.showDiff = true;
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| 6 | Error.captureStackTrace(this, module.exports);
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| 7 | }
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| 8 |
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| 9 | EqualityError.prototype = Object.create(Error.prototype);
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| 10 | EqualityError.prototype.name = 'EqualityError';
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| 11 | EqualityError.prototype.constructor = EqualityError;
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| 12 |
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| 13 | var assert = require('assert');
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| 14 | var esprima = require('esprima');
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| 15 |
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| 16 | module.exports = function(actual, expected, message) {
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| 17 | var parsedActual = esprima.parse(actual);
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| 18 | var parsedExpected = esprima.parse(expected);
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| 19 |
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| 20 | var seemEqual = JSON.stringify(parsedActual) === JSON.stringify(parsedExpected);
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| 21 |
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| 22 | if (!seemEqual) {
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| 23 | throw new EqualityError(message || "AST equality failed",
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| 24 | parsedActual,
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| 25 | parsedExpected
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| 26 | );
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| 27 | }
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| 28 | };
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