87 lines
2.1 KiB
JavaScript
87 lines
2.1 KiB
JavaScript
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var test = require("tap").test;
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var defaultFormater = require('../../format.js');
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var produce = require('../produce.js');
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var chain = require('../../');
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test("set Error.prepareStackTrace uses stack-chain formater", function (t) {
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// Save original formatter
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var restore = Error.prepareStackTrace;
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// Overwrite formatter
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Error.prepareStackTrace = function (error, frames) {
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if (error.test) {
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Object.defineProperty(error, '__some_secret', {
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value: 'you can\'t compare pain.'
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});
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}
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// Maintain .stack format
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return restore(error, frames);
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};
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// Prope the error using custom prepareStackTrace
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var testError = new Error();
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testError.test = true;
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testError.stack;
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t.equal(testError.__some_secret, 'you can\'t compare pain.');
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// Restore
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Error.prepareStackTrace = restore;
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t.equal(produce.real(3), produce.fake([
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'Error: trace',
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' at {where}:18:17',
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' at deepStack ({where}:5:5)',
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' at deepStack ({where}:7:5)'
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]));
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t.end();
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});
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test("set Error.prepareStackTrace uses other formater", function (t) {
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// Another module sets up a formater
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Error.prepareStackTrace = function () {
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return 'custom';
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};
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// Save original formatter
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var restore = Error.prepareStackTrace;
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// Overwrite formatter
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Error.prepareStackTrace = function (error, frames) {
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if (error.test) {
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Object.defineProperty(error, '__some_secret', {
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value: 'you can\'t compare pain.'
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});
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}
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// Maintain .stack format
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return restore(error, frames);
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};
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// Prope the error using custom prepareStackTrace
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var testError = new Error();
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testError.test = true;
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testError.stack;
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t.equal(testError.__some_secret, 'you can\'t compare pain.');
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// Restore
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Error.prepareStackTrace = restore;
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t.equal(produce.real(3), 'custom');
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// Perform an actual restore of the formater, to prevent test conflicts
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chain.format.restore();
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t.equal(produce.real(3), produce.fake([
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'Error: trace',
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' at {where}:18:17',
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' at deepStack ({where}:5:5)',
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' at deepStack ({where}:7:5)'
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]));
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t.end();
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});
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