The main purpose of the library is integration into tests which use json and providing human-readable output of test results.

The lib can compare two json items and return a detailed report of the comparison.

At the moment it can detect a couple of types of differences:

• FullMatch - means items are identical.
• SupersetMatch - means first item is a superset of a second item.
• NoMatch - means objects are different.

Being a superset means that every object and array which don't match completely in a second item must be a subset of a first item. For example:

{"a": 1, "b": 2, "c": 3}

Is a superset of (or second item is a subset of a first one):

{"a": 1, "c": 3}

Library API documentation can be found on godoc.org: https://godoc.org/github.com/nsf/jsondiff

You can try LIVE version here (thanks to gopherjs): https://nosmileface.dev/jsondiff

The library is inspired by http://tlrobinson.net/projects/javascript-fun/jsondiff/