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test_utils.go
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test_utils.go
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package twitter
import (
"net/http"
"net/http/httptest"
"net/url"
)
// NewTestStream creates a Stream for testing with a provided input Messages channel.
// It is safe to call Stop() once on the provided *Stream, as with a normal Stream.
func NewTestStream(messages chan interface{}) *Stream {
return &Stream{
Messages: messages,
done: make(chan struct{}),
}
}
// NewTestServer exposes testServer for test scaffolding in libraries that use go-twitter
// it takes a map of path:functions to set the ServeMux.
func NewTestServer(handlers map[string]func(w http.ResponseWriter, r *http.Request)) (*http.Client, *httptest.Server) {
client, mux, server := testServer()
for path, handler := range handlers {
mux.HandleFunc(path, handler)
}
return client, server
}
// testServer returns an http Client, ServeMux, and Server. The client proxies
// requests to the server and handlers can be registered on the mux to handle
// requests. The caller must close the test server.
func testServer() (*http.Client, *http.ServeMux, *httptest.Server) {
mux := http.NewServeMux()
server := httptest.NewServer(mux)
transport := &RewriteTransport{&http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}}
client := &http.Client{Transport: transport}
return client, mux, server
}
// RewriteTransport rewrites https requests to http to avoid TLS cert issues
// during testing.
type RewriteTransport struct {
Transport http.RoundTripper
}
// RoundTrip rewrites the request scheme to http and calls through to the
// composed RoundTripper or if it is nil, to the http.DefaultTransport.
func (t *RewriteTransport) RoundTrip(req *http.Request) (*http.Response, error) {
req.URL.Scheme = "http"
if t.Transport == nil {
return http.DefaultTransport.RoundTrip(req)
}
return t.Transport.RoundTrip(req)
}