import ( "fmt" "net/http" "testing" "k8s.io/kubernetes/pkg/util/testing" ) func TestFoo(t *testing.T) { handler := func(w http.ResponseWriter, r *http.Request) { fmt.Fprintln(w, "Hello, World!") } fh := testing.FakeHandler(handler) defer fh.Close() // Test HTTP requests against the fake server // ... }Here, we create a fake HTTP handler that returns "Hello, World!" response. We use `testing.FakeHandler` to create the fake handler, which returns an `httptest.Server` instance that can be used to test HTTP requests. Overall, the example demonstrates the use of `FakeHandler` to create a fake server for testing purposes.