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77 lines
2.2 KiB
77 lines
2.2 KiB
// Flags: --expose_internals
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const internalUtil = require('internal/util');
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const binding = process.binding('util');
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const spawnSync = require('child_process').spawnSync;
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const path = require('path');
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const kArrowMessagePrivateSymbolIndex = binding['arrow_message_private_symbol'];
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const kDecoratedPrivateSymbolIndex = binding['decorated_private_symbol'];
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const decorateErrorStack = internalUtil.decorateErrorStack;
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assert.doesNotThrow(function() {
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decorateErrorStack();
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decorateErrorStack(null);
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decorateErrorStack(1);
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decorateErrorStack(true);
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});
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// Verify that a stack property is not added to non-Errors
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const obj = {};
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decorateErrorStack(obj);
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assert.strictEqual(obj.stack, undefined);
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// Verify that the stack is decorated when possible
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function checkStack(stack) {
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const matches = stack.match(/var foo bar;/g);
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assert.strictEqual(Array.isArray(matches), true);
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assert.strictEqual(matches.length, 1);
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}
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let err;
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const badSyntaxPath =
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path.join(common.fixturesDir, 'syntax', 'bad_syntax')
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.replace(/\\/g, '\\\\');
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try {
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require(badSyntaxPath);
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} catch (e) {
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err = e;
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}
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assert(typeof err, 'object');
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checkStack(err.stack);
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// Verify that the stack is only decorated once
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decorateErrorStack(err);
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decorateErrorStack(err);
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checkStack(err.stack);
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// Verify that the stack is only decorated once for uncaught exceptions
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const args = [
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'-e',
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`require('${badSyntaxPath}')`
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];
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const result = spawnSync(process.argv[0], args, { encoding: 'utf8' });
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checkStack(result.stderr);
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// Verify that the stack is unchanged when there is no arrow message
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err = new Error('foo');
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let originalStack = err.stack;
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decorateErrorStack(err);
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assert.strictEqual(originalStack, err.stack);
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// Verify that the arrow message is added to the start of the stack when it
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// exists
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const arrowMessage = 'arrow_message';
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err = new Error('foo');
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originalStack = err.stack;
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binding.setHiddenValue(err, kArrowMessagePrivateSymbolIndex, arrowMessage);
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decorateErrorStack(err);
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assert.strictEqual(err.stack, `${arrowMessage}${originalStack}`);
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assert.strictEqual(
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binding.getHiddenValue(err, kDecoratedPrivateSymbolIndex), true);
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