In this chapter, I describe the tools that Angular provides for unit testing components and directives. Some Angular building blocks, such as pipes and services, can be readily tested in isolation using the basic testing tools that I set up at the start of the chapter. Components (and, to a lesser extent, directives) have complex interactions with their host elements and with their template content and require special features. Table 29-1 puts Angular unit testing in context.
Table 29-1. Putting Angular Unit Testing Context
What is it?
Angular components and directives require special support ...