Testing Angular Components: Ensuring Proper Unit Testing of Public Members Intended for HTML Input Only

How can Angular's ng test --code-coverage help with unit testing public variables that are strictly used as direct input in HTML?

https://i.sstatic.net/z6j1O.png

These variables are eventually placed into other components like this:

<ctrl-grid 
  [gridData]="agencyAssociatedList" 
  [pageSizes]="pageSizes" 
  [gridOptions]="gridOptions"
  [(state)]="gridState"
  [buttonCount]="buttonCount"
  [previousNext]="previousNext"
  [loadDataWithState]="exportData"
  >

Answer №1

Enabling sourceMaps is essential for achieving comprehensive code coverage.

Let's delve deeper into the concept of sourceMap.

A source map serves as a JSON file that includes all the crucial details required to trace transpiled code back to its original sources.

With Angular converting TypeScript to JavaScript, having sourceMaps activated allows for mapping the specific TypeScript code block being covered within the transpiled JavaScript.

Disabling sourceMaps can result in not only incomplete coverage of public variables but also branches at times.

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