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fix: remove proxy frames from stack traces

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Proxy-related implementation frames were showing up in the stack
traces for failed property assertions. This commit removes them by
setting the proxy getter (instead of the property getter) as the
starting point to remove all implementation frames.
This commit is contained in:
Grant Snodgrass 2016-12-11 11:17:15 -05:00
parent 8fa4f78574
commit b88e53639e
4 changed files with 38 additions and 9 deletions
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3
lib/chai/utils/addProperty.js
View file

@ -6,6 +6,7 @@
var chai = require('../../chai');
var flag = require('./flag');
var isProxyEnabled = require('./isProxyEnabled');
var transferFlags = require('./transferFlags');
/**
@ -39,10 +40,12 @@ module.exports = function addProperty(ctx, name, getter) {
Object.defineProperty(ctx, name,
{ get: function propertyGetter() {
if (!isProxyEnabled()) {
var keep_ssfi = flag(this, 'keep_ssfi');
var old_ssfi = flag(this, 'ssfi');
if (!keep_ssfi && old_ssfi)
flag(this, 'ssfi', propertyGetter);
}
var result = getter.call(this);
if (result !== undefined)

3
lib/chai/utils/overwriteProperty.js
View file

@ -6,6 +6,7 @@
var chai = require('../../chai');
var flag = require('./flag');
var isProxyEnabled = require('./isProxyEnabled');
var transferFlags = require('./transferFlags');
/**
@ -51,10 +52,12 @@ module.exports = function overwriteProperty(ctx, name, getter) {
Object.defineProperty(ctx, name,
{ get: function overwritingPropertyGetter() {
if (!isProxyEnabled()) {
var keep_ssfi = flag(this, 'keep_ssfi');
var old_ssfi = flag(this, 'ssfi');
if (!keep_ssfi && old_ssfi)
flag(this, 'ssfi', overwritingPropertyGetter);
}
flag(this, 'keep_ssfi', true);
var result = getter(_super).call(this);

9
lib/chai/utils/proxify.js
View file

@ -1,4 +1,5 @@
var config = require('../config');
var flag = require('./flag');
var getProperties = require('./getProperties');
var isProxyEnabled = require('./isProxyEnabled');
@ -27,6 +28,8 @@ var isProxyEnabled = require('./isProxyEnabled');
* @name proxify
*/
var builtins = ['__flags', '__methods', '_obj', 'assert'];
module.exports = function proxify(obj, nonChainableMethodName) {
if (!isProxyEnabled()) return obj;
@ -48,7 +51,7 @@ module.exports = function proxify(obj, nonChainableMethodName) {
var orderedProperties = getProperties(target).filter(function(property) {
return !Object.prototype.hasOwnProperty(property) &&
['__flags', '__methods', '_obj', 'assert'].indexOf(property) === -1;
builtins.indexOf(property) === -1;
}).sort(function(a, b) {
return stringDistance(property, a) - stringDistance(property, b);
});
@ -64,6 +67,10 @@ module.exports = function proxify(obj, nonChainableMethodName) {
}
}
if (builtins.indexOf(property) === -1) {
flag(target, 'ssfi', proxyGetter);
}
return Reflect.get(target, property);
}
});

16
test/configuration.js
View file

@ -99,6 +99,10 @@ describe('configuration', function () {
it('should include Chai frames in stack trace', function () {
expect(caughtErr.stack).to.contain('propertyGetter');
if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {
expect(caughtErr.stack).to.contain('proxyGetter');
}
});
it('should include user frames in stack trace', function () {
@ -121,6 +125,10 @@ describe('configuration', function () {
it('should include Chai frames in stack trace', function () {
expect(caughtErr.stack).to.contain('overwritingPropertyGetter');
if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {
expect(caughtErr.stack).to.contain('proxyGetter');
}
});
it('should include user frames in stack trace', function () {
@ -233,6 +241,10 @@ describe('configuration', function () {
it('should not include Chai frames in stack trace', function () {
expect(caughtErr.stack).to.not.contain('propertyGetter');
if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {
expect(caughtErr.stack).to.not.contain('proxyGetter');
}
});
it('should include user frames in stack trace', function () {
@ -255,6 +267,10 @@ describe('configuration', function () {
it('should not include Chai frames in stack trace', function () {
expect(caughtErr.stack).to.not.contain('overwritingPropertyGetter');
if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {
expect(caughtErr.stack).to.not.contain('proxyGetter');
}
});
it('should include user frames in stack trace', function () {