Package it implements a human-friendly syntax for assertions to validates correctness of your code. It's style allows to write BDD-like specifications: "X should Y", "A equals to B", etc. This library is heavily inspired by features of ScalaTest, see http://www.scalatest.org. It tries to adapt similar syntax for Golang. There is a vision that change of code style in testing helps developers to "switch gears". It's sole purpose to write unit tests assertions in natural language. Each assertion begins with phrase: Continues with one of imperative keyword as defined by RFC 2119 Assertions with user-defined functions is a technique to define arbitrary boolean expression. Intercept any failures in target features Matches equality and identity Matches type Matches Order and Ranges