Testing HTTP Handlers

Output:

status: 200
type: application/json
body: {"id":1001,"customer":"Ada","paid":true}

This program calls an HTTP handler and reads its full response, and it opens no port and starts no server. An HTTP handler is an ordinary function that receives a request and a ResponseWriter, so a test can call it directly with values of those two types. The package net/http/httptest provides both of them.

This is the one program in this chapter that the player can run, because it needs only one file

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