/
crawler_test.go
105 lines (79 loc) · 2.31 KB
/
crawler_test.go
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package crawler
import (
"bytes"
"net/url"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
func Test_ItPrintsForwardSlashForURLsWithNoPath(t *testing.T) {
output := new(bytes.Buffer)
mockFetcher := &MockFetcher{}
app := NewCrawlerApp(output, mockFetcher)
url, err := url.Parse("http://www.google.com")
assert.Nil(t, err)
expectedOutput := `/
Static Assets:
Internal Links:
`
mockFetcher.On("Fetch", url.String()).Return(&PageResults{}, nil)
app.waitGroup.Add(1)
app.Crawl(url, 2)
app.waitGroup.Wait()
assert.Equal(t, output.String(), expectedOutput)
}
func Test_ItReturnsAnErrorOnceMaxDepthIsReached(t *testing.T) {
output := new(bytes.Buffer)
mockFetcher := &MockFetcher{}
app := NewCrawlerApp(output, mockFetcher)
url, err := url.Parse("http://www.google.com")
assert.Nil(t, err)
mockFetcher.On("Fetch", url.String()).Return(&PageResults{
internalURLs: map[string]bool{"http://www.google.com/1": true},
}, nil)
app.waitGroup.Add(1)
app.Crawl(url, 1)
assert.EqualError(t, <-app.Errors, "Reached max depth")
}
func Test_ItTracksURLsItHasVisited(t *testing.T) {
output := new(bytes.Buffer)
mockFetcher := &MockFetcher{}
app := NewCrawlerApp(output, mockFetcher)
urlString := "http://www.google.com"
expectedVisitedMap := map[string]bool{
urlString: true,
"http://www.google.com/1": true,
}
url, err := url.Parse(urlString)
assert.Nil(t, err)
mockFetcher.On("Fetch", url.String()).Return(&PageResults{
internalURLs: map[string]bool{
"http://www.google.com/1": true,
},
}, nil)
mockFetcher.On("Fetch", url.String()+"/1").Return(&PageResults{}, nil)
app.waitGroup.Add(1)
app.Crawl(url, 2)
app.waitGroup.Wait()
assert.Equal(t, expectedVisitedMap, app.Visited)
}
func Test_ItDoesntRevistVisitedURLS(t *testing.T) {
output := new(bytes.Buffer)
mockFetcher := &MockFetcher{}
app := NewCrawlerApp(output, mockFetcher)
urlString := "http://www.google.com"
app.Visited[urlString] = true
url, err := url.Parse(urlString)
assert.Nil(t, err)
app.waitGroup.Add(1)
app.Crawl(url, 2)
app.waitGroup.Wait()
mockFetcher.AssertNotCalled(t, "Fetch", urlString)
}
type MockFetcher struct {
mock.Mock
}
func (m *MockFetcher) Fetch(url string) (*PageResults, error) {
args := m.Called(url)
return (args.Get(0)).(*PageResults), args.Error(1)
}