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test(icon): add tests for finding icon URLs in HTML documents
This commit is contained in:
Frédéric Guillot
parent
fdc12bf18c
commit
459b1bf1ee
1 changed files with 223 additions and 8 deletions
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@ -112,22 +112,237 @@ func TestParseInvalidImageDataURLWithWrongPrefix(t *testing.T) {
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}
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}
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func TestParseDocumentWithWhitespaceIconURL(t *testing.T) {
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html := `<link rel="shortcut icon" href="
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/static/img/favicon.ico
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"><link rel='shortcut icon'><link rel='shortcut icon' href=" ">`
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func TestFindIconURLsFromHTMLDocument_MultipleIcons(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<link rel="icon" href="/favicon.ico">
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<link rel="shortcut icon" href="/shortcut-favicon.ico">
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<link rel="icon shortcut" href="/icon-shortcut.ico">
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<link rel="apple-touch-icon" href="/apple-touch-icon.png">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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if len(iconURLs) != 1 {
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t.Fatalf(`Invalid number of icon URLs, got %d`, len(iconURLs))
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expected := []string{
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"/favicon.ico",
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"/shortcut-favicon.ico",
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"/icon-shortcut.ico",
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"/apple-touch-icon.png",
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}
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if iconURLs[0] != "/static/img/favicon.ico" {
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t.Errorf(`Invalid icon URL, got %q`, iconURLs[0])
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if len(iconURLs) != len(expected) {
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t.Fatalf("Expected %d icon URLs, got %d", len(expected), len(iconURLs))
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}
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for i, expectedURL := range expected {
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if iconURLs[i] != expectedURL {
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t.Errorf("Expected icon URL %d to be %q, got %q", i, expectedURL, iconURLs[i])
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}
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}
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}
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func TestFindIconURLsFromHTMLDocument_CaseInsensitiveRel(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<link rel="ICON" href="/favicon1.ico">
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<link rel="Icon" href="/favicon2.ico">
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<link rel="SHORTCUT ICON" href="/favicon3.ico">
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<link rel="Shortcut Icon" href="/favicon4.ico">
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<link rel="ICON SHORTCUT" href="/favicon5.ico">
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<link rel="Icon Shortcut" href="/favicon6.ico">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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expected := []string{
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"/favicon1.ico",
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"/favicon2.ico",
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"/favicon3.ico",
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"/favicon4.ico",
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"/favicon5.ico",
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"/favicon6.ico",
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}
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if len(iconURLs) != len(expected) {
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t.Fatalf("Expected %d icon URLs, got %d", len(expected), len(iconURLs))
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}
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for i, expectedURL := range expected {
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if iconURLs[i] != expectedURL {
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t.Errorf("Expected icon URL %d to be %q, got %q", i, expectedURL, iconURLs[i])
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}
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}
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}
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func TestFindIconURLsFromHTMLDocument_NoIcons(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<title>No Icons Here</title>
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<link rel="stylesheet" href="/style.css">
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<link rel="canonical" href="https://example.com">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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if len(iconURLs) != 0 {
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t.Fatalf("Expected 0 icon URLs, got %d: %v", len(iconURLs), iconURLs)
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}
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}
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func TestFindIconURLsFromHTMLDocument_EmptyHref(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<link rel="icon" href="">
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<link rel="icon" href=" ">
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<link rel="icon">
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<link rel="shortcut icon" href="/valid-icon.ico">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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expected := []string{"/valid-icon.ico"}
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if len(iconURLs) != len(expected) {
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t.Fatalf("Expected %d icon URLs, got %d", len(expected), len(iconURLs))
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}
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if iconURLs[0] != expected[0] {
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t.Errorf("Expected icon URL to be %q, got %q", expected[0], iconURLs[0])
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}
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}
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func TestFindIconURLsFromHTMLDocument_DataURLs(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<link rel="icon" href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPhfDwAChAGAhGAQ+QAAAABJRU5ErkJggg==">
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<link rel="shortcut icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'></svg>">
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<link rel="icon" href="/regular-icon.ico">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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// The function processes queries in order: rel="icon", then rel="shortcut icon", etc.
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// So both rel="icon" links are found first, then the rel="shortcut icon" link
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expected := []string{
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"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPhfDwAChAGAhGAQ+QAAAABJRU5ErkJggg==",
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"/regular-icon.ico",
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"data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'></svg>",
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}
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if len(iconURLs) != len(expected) {
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t.Fatalf("Expected %d icon URLs, got %d", len(expected), len(iconURLs))
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}
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for i, expectedURL := range expected {
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if iconURLs[i] != expectedURL {
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t.Errorf("Expected icon URL %d to be %q, got %q", i, expectedURL, iconURLs[i])
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}
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}
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}
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func TestFindIconURLsFromHTMLDocument_RelativeAndAbsoluteURLs(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<link rel="icon" href="/absolute-path.ico">
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<link rel="icon" href="relative-path.ico">
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<link rel="icon" href="../parent-dir.ico">
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<link rel="icon" href="https://example.com/external.ico">
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<link rel="icon" href="//cdn.example.com/protocol-relative.ico">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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expected := []string{
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"/absolute-path.ico",
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"relative-path.ico",
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"../parent-dir.ico",
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"https://example.com/external.ico",
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"//cdn.example.com/protocol-relative.ico",
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}
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if len(iconURLs) != len(expected) {
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t.Fatalf("Expected %d icon URLs, got %d", len(expected), len(iconURLs))
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}
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for i, expectedURL := range expected {
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if iconURLs[i] != expectedURL {
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t.Errorf("Expected icon URL %d to be %q, got %q", i, expectedURL, iconURLs[i])
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}
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}
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}
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func TestFindIconURLsFromHTMLDocument_InvalidHTML(t *testing.T) {
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html := `<!DOCTYPE html>
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<html>
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<head>
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<link rel="icon" href="/valid-before-error.ico">
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<link rel="icon" href="/unclosed-tag.ico"
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<link rel="shortcut icon" href="/valid-after-error.ico">
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</head>
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</html>`
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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// goquery should handle malformed HTML gracefully
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if len(iconURLs) == 0 {
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t.Fatal("Expected to find some icon URLs even with malformed HTML")
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}
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// Should at least find the valid ones
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foundValidIcon := false
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for _, url := range iconURLs {
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if url == "/valid-before-error.ico" || url == "/valid-after-error.ico" {
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foundValidIcon = true
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break
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}
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}
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if !foundValidIcon {
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t.Errorf("Expected to find at least one valid icon URL, got: %v", iconURLs)
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}
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}
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func TestFindIconURLsFromHTMLDocument_EmptyDocument(t *testing.T) {
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iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(""), "text/html")
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if err != nil {
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t.Fatal(err)
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}
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if len(iconURLs) != 0 {
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t.Fatalf("Expected 0 icon URLs from empty document, got %d", len(iconURLs))
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}
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}
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