<p>Well, it came to me when I was writing 101st test for API. There are many asserters in golang world, but I needed readable output. Especially when it came to output a diff for 2 huge objects - expected and actual API responses. I got inspired by <a href="http://tlrobinson.net/projects/javascript-fun/jsondiff/" rel="nofollow">http://tlrobinson.net/projects/javascript-fun/jsondiff/</a> and implemented this one for Go:
<a href="https://github.com/elgris/jsondiff" rel="nofollow">https://github.com/elgris/jsondiff</a></p>
<p>Hope you will find it useful for your tests. Or point me to another useful tool that visualizes diffs in golang world :)</p>
<hr/>**评论：**<br/><br/>memorylane: <pre><p>If you're already sorting the hash keys when Marshalling, then you can use <code>json.Indent()</code> on both items you want to diff, and then throw them at <a href="http://github.com/aryann/difflib" rel="nofollow">difflib</a>. Which is a general text diff package. It returns an array of diffs so you can work with the text as needed. It can also output HTML so you could use that to visualize the diff.</p>
<p>I see that the library you wrote sorts the hash keys, so the above approach probably wasn't applicable to your situation.</p>
<p><em>[Edit: fixed link]</em></p></pre>
