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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 retry_test
import (
"fmt"
"io"
"net"
"net/http"
"testing"
"time"
"github.com/philippta/flyscrape"
"github.com/philippta/flyscrape/modules/followlinks"
"github.com/philippta/flyscrape/modules/hook"
"github.com/philippta/flyscrape/modules/retry"
"github.com/philippta/flyscrape/modules/starturl"
"github.com/stretchr/testify/require"
)
func TestRetry(t *testing.T) {
t.Parallel()
var count int
mods := []flyscrape.Module{
&starturl.Module{URL: "http://www.example.com"},
&followlinks.Module{},
hook.Module{
AdaptTransportFn: func(rt http.RoundTripper) http.RoundTripper {
return flyscrape.RoundTripFunc(func(r *http.Request) (*http.Response, error) {
count++
return flyscrape.MockResponse(http.StatusServiceUnavailable, "service unavailable")
})
},
},
&retry.Module{
RetryDelays: []time.Duration{
100 * time.Millisecond,
200 * time.Millisecond,
},
},
}
scraper := flyscrape.NewScraper()
scraper.Modules = mods
scraper.Run()
require.Equal(t, 3, count)
}
func TestRetryStatusCodes(t *testing.T) {
t.Parallel()
tests := []struct {
statusCode int
retry bool
}{
{statusCode: http.StatusBadGateway, retry: true},
{statusCode: http.StatusTooManyRequests, retry: true},
{statusCode: http.StatusBadRequest, retry: false},
{statusCode: http.StatusOK, retry: false},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s_%t", http.StatusText(test.statusCode), test.retry), func(t *testing.T) {
t.Parallel()
var count int
mods := []flyscrape.Module{
&starturl.Module{URL: "http://www.example.com"},
&followlinks.Module{},
hook.Module{
AdaptTransportFn: func(rt http.RoundTripper) http.RoundTripper {
return flyscrape.RoundTripFunc(func(r *http.Request) (*http.Response, error) {
count++
return flyscrape.MockResponse(test.statusCode, http.StatusText(test.statusCode))
})
},
},
&retry.Module{
RetryDelays: []time.Duration{
100 * time.Millisecond,
200 * time.Millisecond,
},
},
}
scraper := flyscrape.NewScraper()
scraper.Modules = mods
scraper.Run()
if test.retry {
require.NotEqual(t, 1, count)
} else {
require.Equal(t, 1, count)
}
})
}
}
func TestRetryErrors(t *testing.T) {
t.Parallel()
tests := []struct {
error error
}{
{error: &net.OpError{}},
{error: io.ErrUnexpectedEOF},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%T", test.error), func(t *testing.T) {
t.Parallel()
var count int
mods := []flyscrape.Module{
&starturl.Module{URL: "http://www.example.com"},
&followlinks.Module{},
hook.Module{
AdaptTransportFn: func(rt http.RoundTripper) http.RoundTripper {
return flyscrape.RoundTripFunc(func(r *http.Request) (*http.Response, error) {
return nil, test.error
})
},
},
&retry.Module{
RetryDelays: []time.Duration{
100 * time.Millisecond,
200 * time.Millisecond,
},
},
}
scraper := flyscrape.NewScraper()
scraper.Modules = mods
scraper.Run()
require.NotEqual(t, 1, count)
})
}
}
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