Documenting and testing web services

You can easily test a web service by making HTTP GET requests, using a browser. To test other HTTP methods, we need a more advanced tool.

Testing GET requests using a browser

You will use Chrome to test the three implementations of a GET request: for all customers, for customers in a specified country, and for a single customer using their unique customer ID:

1. In Terminal, start the NorthwindService Web API web service by entering the following command: dotnet run
2. In Chrome, navigate to https://localhost:5001/api/customers and note the JSON document returned, containing all the 91 customers in the Northwind database, as shown in the following screenshot:

3. Navigate to https://localhost:5001/api/customers/?country=Germany and note the JSON document returned, containing only the customers in Germany, as shown in the following screenshot:

   

   If you get an empty array returned, then make sure you have entered the country name using the...