Testing Streams Using the HTTPClient Module
Understand how to effectively test HTTPClient observables in Angular by using HttpClientTestingModule and HttpTestingController. This lesson guides you through mocking HTTP requests, subscribing to observables, defining expectations, and verifying no outstanding requests remain. Gain hands-on skills to test HTTP streams within your reactive Angular applications.
We'll cover the following...
We'll cover the following...
The HTTPClient module
Observables that are returned from the HTTP client are frequently used in our Angular code. How can we test those streams? Let’s look at the pattern we can use to test those observables. We’ll consider the following method inside RecipeService:
saveRecipe(formValue: Recipe): Observable<Recipe> {return this.http.post<Recipe>(`${BASE_PATH}/recipes/save`, formValue);}
The saveRecipe method
The saveRecipe method issues an HTTP request. There’s a very useful API that can be ...