Add tests to the library

[JoseLion]

This library came from another project and the tests it used to have were highly coupled to that specific project. We'd like to add test to the library taking into account the following points:

• Integration tests might be challenging since we're declaring the core libraries as peer dependencies (react, react-native, react-native-svg), so they will not be actually installed
• One of the core features of the library relies on measuring the layout of components across the screen. However, this is not possible in the context of an integration test because the components are never actually rendered, therefore measurements will always be undefined