> For the complete documentation index, see [llms.txt](https://duncanhunter.gitbook.io/testing-angular/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://duncanhunter.gitbook.io/testing-angular/jasmine-tests.md).

# 4. Jasmine tests

Jasmine is an open source testing framework from Pivotal Labs that uses behaviour-driven notation resulting in a fluent and improved testing experience.

Main concepts:

1. Suites — describe(string, function) functions, take a title and a function containing one or more specs.
2. Specs — it(string, function) functions, take a title and a function containing one or more expectations.
3. Expectations — are assertions that evaluate to true or false. Basic syntax reads expect(actual).toBe(expected)
4. Matchers — are predefined helpers for common assertions. Eg: toBe(expected), toEqual(expected). Find a complete list here.