just a helpful assert which I was lacking in jest/chai/jasmine

React Redux chat with settings page

Protractor end-to-end test automation boilerplate, using Commonjs, Mocha & Assert.

🔍 _.haz() is like _.has() but this underscore and/or lodash mixin lets you do deep object key existence checking with a dot denoted string, for example 'a.b.c'

Puppeteer end-to-end test automation boilerplate, using CommonJS, Jasmine and Assert.

Test if two numbers are coprime.

Test if a value is an email address.

Test if an object has a specified property, either own or inherited.

Test if an object's own property has a data descriptor.

Test if a value is a parseable JSON string.

Test if an input value is a supported array real-valued data type.

Test if an input value is a supported ndarray complex-valued floating-point data type.

Test if two arguments are both generic arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

Test if an input value is a supported input ndarray casting policy.

Test if two arguments are both Uint16Arrays and have equal values.

Test if a value is equal to negative zero.

Test if a value is an array-like object containing only nonpositive numbers.

Multiple assertions

A Jest matcher for image comparisons based on pixelmatch. Can also be used with Mocha. Useful for visual regression testing.

Test if a value is undefined or null.