github.com/goenning/expect

An opinionated and minimalist assert module for Go

📦 Zero Dependencies

What it does

Writing assertions for unit test using Go standard can be quite cumbersome and repetitive. expect is a tiny library that simplifies and adds more clarify to assertions.

Before:

if err != nil {
    t.Fatalf("Err is not nil")
}
if number != 4 {
    t.Fatalf("Number is not 4")
}

After:

Expect(err).IsNil()
Expect(result).Equals(4)

How to use

import (
    . "github.com/goenning/expect"
)

func TestCanAddNumbers(t *testing.T) {
    RegisterT(t)

    result, err := DoSomething()

    Expect(err).IsNil()
    Expect(result).Equals(4)
}

All supported assertion operations:

• Equals(expected)
• NotEquals(other)
• ContainsString(substr)
• IsTrue()
• IsFalse()
• IsEmpty()
• IsNotEmpty()
• IsNotNil()
• IsNil()
• HasLen(length)
• Panics()
• EventuallyEquals(expected)
• WithinTime(time, duration)