How can I test APIs built with Go?

How can I test APIs built with Go?

You can use testing frameworks like Go's built-in "net/http/httptest" package to test your APIs.

Can you show me a simple example of how to use httptest?

Sure! Here's a basic example:

package main

import (
    "net/http"
    "net/http/httptest"
    "testing"
)

func TestMyAPI(t *testing.T) {
    req := httptest.NewRequest("GET", "http://example.com/foo", nil)
    w := httptest.NewRecorder()
    handler := http.HandlerFunc(MyAPIHandler)
    handler.ServeHTTP(w, req)

    res := w.Result()
    // Add assertions here
}

What assertions can I add to check the response?

You can check the status code and response body. For example:

if w.Code != http.StatusOK {
    t.Errorf("Expected status OK; got %v", w.Code)
}

Are there any libraries that can help with API testing in Go?

Yes, libraries like "Ginkgo" and "Gomega" provide a BDD-style testing framework that can be very helpful.