Modernize project and fix URL resolution bugs

client.go

@@ -16,7 +16,7 @@ type Client struct {
 // Create a new Client with and embedded
 // http.Client type
 func NewClient() *Client {
-	return &Client{&http.Client{}, &http.Request{}, &http.Response{}}
+	return &Client{Client: &http.Client{}}
 }
 
 // Request is used to initiate a client request
@@ -32,7 +32,10 @@ func (c *Client) Request(method string, url string) (ret *Crawler, err error) {
 		return nil, err
 	}
 
-	crawler := NewCrawler(c.resp)
+	crawler, err := NewCrawler(c.resp)
+	if err != nil {
+		return nil, err
+	}
 
 	return crawler, nil
 }

crawler.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"net/http"
 
-	"github.com/puerkitobio/goquery"
+	"github.com/PuerkitoBio/goquery"
 )
 
 // The Crawler type wraps goquery's
@@ -14,9 +14,12 @@ type Crawler struct {
 }
 
 // Create the new crawler type from the Response
-func NewCrawler(resp *http.Response) *Crawler {
-	doc, _ := goquery.NewDocumentFromResponse(resp)
-	return &Crawler{doc}
+func NewCrawler(resp *http.Response) (*Crawler, error) {
+	doc, err := goquery.NewDocumentFromResponse(resp)
+	if err != nil {
+		return nil, err
+	}
+	return &Crawler{doc}, nil
 }
 
 // Look for specific anchor tag within document

go.mod

@@ -0,0 +1,10 @@
+module github.com/brettdonohoo/scour
+
+go 1.24.3
+
+require (
+	github.com/PuerkitoBio/goquery v1.11.0
+	golang.org/x/net v0.49.0
+)
+
+require github.com/andybalholm/cascadia v1.3.3 // indirect

go.sum

@@ -0,0 +1,71 @@
+github.com/PuerkitoBio/goquery v1.11.0 h1:jZ7pwMQXIITcUXNH83LLk+txlaEy6NVOfTuP43xxfqw=
+github.com/PuerkitoBio/goquery v1.11.0/go.mod h1:wQHgxUOU3JGuj3oD/QFfxUdlzW6xPHfqyHre6VMY4DQ=
+github.com/andybalholm/cascadia v1.3.3 h1:AG2YHrzJIm4BZ19iwJ/DAua6Btl3IwJX+VI4kktS1LM=
+github.com/andybalholm/cascadia v1.3.3/go.mod h1:xNd9bqTn98Ln4DwST8/nG+H0yuB8Hmgu1YHNnWw0GeA=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
+golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/net v0.49.0 h1:eeHFmOGUTtaaPSGNmjBKpbng9MulQsJURQUAfUwY++o=
+golang.org/x/net v0.49.0/go.mod h1:/ysNB2EvaqvesRkuLAyjI1ycPZlQHM3q01F02UY/MV8=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
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+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
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+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

scour_test.go

@@ -1 +1,90 @@
 package scour
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestLinkUrlBrittle(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "<html><body><a class='foo' href='/about'>About</a></body></html>")
+	}))
+	defer ts.Close()
+
+	client := NewClient()
+	crawler, err := client.Request("GET", ts.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	link, err := crawler.SelectLink("About")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	url := link.Url()
+	expected := ts.URL + "/about"
+	if url != expected {
+		t.Errorf("Expected %s, got %s", expected, url)
+	}
+}
+
+func TestLinkUrlAbsolute(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "<html><body><a href='http://google.com'>Google</a></body></html>")
+	}))
+	defer ts.Close()
+
+	client := NewClient()
+	crawler, _ := client.Request("GET", ts.URL)
+	link, _ := crawler.SelectLink("Google")
+
+	url := link.Url()
+	expected := "http://google.com"
+	if url != expected {
+		t.Errorf("Expected %s, got %s", expected, url)
+	}
+}
+
+func TestLinkUrlRelativePath(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "<html><body><a href='about'>About</a></body></html>")
+	}))
+	defer ts.Close()
+
+	client := NewClient()
+	crawler, _ := client.Request("GET", ts.URL+"/path/")
+	link, _ := crawler.SelectLink("About")
+
+	url := link.Url()
+	expected := ts.URL + "/path/about"
+	if url != expected {
+		t.Errorf("Expected %s, got %s", expected, url)
+	}
+}
+
+func TestClickRelative(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/about" {
+			fmt.Fprintln(w, "Welcome to About Page")
+		} else {
+			fmt.Fprintln(w, "<html><body><a href='/about'>About</a></body></html>")
+		}
+	}))
+	defer ts.Close()
+
+	client := NewClient()
+	crawler, _ := client.Request("GET", ts.URL)
+	link, _ := crawler.SelectLink("About")
+	crawler, err := client.Click(link)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !strings.Contains(crawler.Find("body").Text(), "Welcome to About Page") {
+		t.Errorf("Expected 'Welcome to About Page', got '%s'", crawler.Find("body").Text())
+	}
+}

selection.go

@@ -3,8 +3,8 @@ package scour
 import (
 	"net/url"
 
-	"code.google.com/p/go.net/html"
-	"github.com/puerkitobio/goquery"
+	"golang.org/x/net/html"
+	"github.com/PuerkitoBio/goquery"
 )
 
 // Link is used for holding link data
@@ -19,10 +19,21 @@ func (l *Link) Method() string {
 }
 
 // Create the new path for Link
-// TODO: Flesh this out
 func (l *Link) Url() string {
-	l.url.Path = l.node.Attr[0].Val
-	return l.url.String()
+	var href string
+	for _, attr := range l.node.Attr {
+		if attr.Key == "href" {
+			href = attr.Val
+			break
+		}
+	}
+
+	relative, err := url.Parse(href)
+	if err != nil {
+		return ""
+	}
+
+	return l.url.ResolveReference(relative).String()
 }
 
 // Selection embeds goquery's Selection object