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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package depth_test
import (
"net/http"
"sync"
"testing"
"github.com/philippta/flyscrape"
"github.com/philippta/flyscrape/modules/depth"
"github.com/philippta/flyscrape/modules/followlinks"
"github.com/philippta/flyscrape/modules/hook"
"github.com/philippta/flyscrape/modules/starturl"
"github.com/stretchr/testify/require"
)
func TestDepth(t *testing.T) {
var urls []string
var mu sync.Mutex
scraper := flyscrape.NewScraper()
scraper.LoadModule(&starturl.Module{URL: "http://www.example.com"})
scraper.LoadModule(&followlinks.Module{})
scraper.LoadModule(&depth.Module{Depth: 2})
scraper.LoadModule(hook.Module{
AdaptTransportFn: func(rt http.RoundTripper) http.RoundTripper {
return flyscrape.RoundTripFunc(func(r *http.Request) (*http.Response, error) {
switch r.URL.String() {
case "http://www.example.com":
return flyscrape.MockResponse(200, `<a href="http://www.google.com">Google</a>`)
case "http://www.google.com":
return flyscrape.MockResponse(200, `<a href="http://www.duckduckgo.com">DuckDuckGo</a>`)
case "http://www.duckduckgo.com":
return flyscrape.MockResponse(200, `<a href="http://www.example.com">Example</a>`)
}
return flyscrape.MockResponse(200, "")
})
},
ReceiveResponseFn: func(r *flyscrape.Response) {
mu.Lock()
urls = append(urls, r.Request.URL)
mu.Unlock()
},
})
scraper.Run()
require.Len(t, urls, 3)
require.Contains(t, urls, "http://www.example.com")
require.Contains(t, urls, "http://www.google.com")
require.Contains(t, urls, "http://www.duckduckgo.com")
}
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