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assert: use util.inspect() to create error messages

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Currently, JSON.stringify() is used to create error messages
on failed assertions. This causes an error when stringifying
objects with circular references. This commit switches out
JSON.stringify() for util.inspect(), which can handle
circular references.

PR-URL: https://github.com/iojs/io.js/pull/668
Reviewed-By: Julien Gilli <julien.gilli@joyent.com>
Reviewed-By: Bert Belder <bertbelder@gmail.com>
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
This commit is contained in:
cjihrig 2015-01-30 10:25:32 -05:00
parent bc2c85ceef
commit 40e29dcbbf
2 changed files with 20 additions and 28 deletions
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17
lib/assert.js
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@ -58,19 +58,6 @@ assert.AssertionError = function AssertionError(options) {
// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);
function replacer(key, value) {
if (util.isUndefined(value)) {
return '' + value;
}
if (util.isNumber(value) && !isFinite(value)) {
return value.toString();
}
if (util.isFunction(value) || util.isRegExp(value)) {
return value.toString();
}
return value;
}
function truncate(s, n) {
if (util.isString(s)) {
return s.length < n ? s : s.slice(0, n);
@ -80,9 +67,9 @@ function truncate(s, n) {
}
function getMessage(self) {
return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
return truncate(util.inspect(self.actual), 128) + ' ' +
self.operator + ' ' +
truncate(JSON.stringify(self.expected, replacer), 128);
truncate(util.inspect(self.expected), 128);
}
// At present only the three keys mentioned above are used and