Jasmine is available as a Node.js module and also as a library that we could use in the browser. It comes with its assertion methods.

It's a module, so it could be installed via the Node.js package manager, npm:

$ npm install jasmine-node -g

The command sets up Jasmine globally, so we can run jasmine-node in every directory of our choice. The tests could be organized into different files placed in one folder or subfolders. The only requirement is to end our file names with spec.js, for example, testing-picture-capture.spec.js or testing-picture-list.spec.js.

Let's look at Jasmine on a particular example.