Assert

Minimalist unit testing library.

Installation and Usage

Installation

To add the library to a project, run:

npm i @stuymedova/assert

Usage

// tests.js
import { assert } from '@stuymedova/assert';

assert.equal('hello', 'world'); // Throws an AssertionError

To check, run in console:

node tests.js

API

assert.equal(actual, expected)

Throws an AssertionError if the given values are not equal. Values are compared using the strict equality operator (triple equals).

assert.notEqual(actual, expected)

Throws an AssertionError if the given values are equal. Values are compared using the strict equality operator (triple equals).

assert.equalReference(actual, expected)

Throws an AssertionError if the given variables do not referce the same object.

assert.deepEqual(actual, expected)

Throws an AssertionError if the given objects (incl. arrays) are not deeply equal (thay have the same number of key-value pairs, and all of them match).

assert.less(actual, expected)

Throws an AssertionError if the first passed value is greater than or equal to the second value.

assert.lessOrEqual(actual, expected)

Throws an AssertionError if the first passed value is greater than the second value.

assert.greater(actual, expected)

Throws an AssertionError if the first passed value is less than or equal to the second value.

assert.greaterOrEqual(actual, expected)

Throws an AssertionError if the first passed value is less than the second value.

assert.trapped(value, lowerBound, excludedUpperBound)

Throws an AssertionError if the given value is not within bounds or if the precondition is not satisfied (lower bound must be greater than the upper bound).

assert.equalType(actual, expected)

Throws an AssertionError if the given values are not of the same type.

assert.type(value, expectedType)

Throws an AssertionError if the given value's type does not match the given type.

assert.true(value)

Throws an AssertionError if the given value is not true.

assert.false(value)

Throws an AssertionError if the given value is not false.