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package main
import (
"strings"
"testing"
)
func TestProcessHTML(t *testing.T) {
const commonStyle = "<style>body { font-family: sans-serif; }</style>"
const commonScript = "<script>console.log('test');</script>"
const commonNav = "<nav><a href='/home'>Home</a></nav>"
const commonFooter = "<footer><p>© 2025 Test Inc.</p></footer>"
const commonImg = "<img src='test.jpg' alt='Test Image'>"
const commonVideo = "<video><source src='test.mp4' type='video/mp4'></video>"
const commonLink = "<link rel='stylesheet' href='style.css'>"
tests := []struct {
name string
pageURL string
rawHTML string
contentSelector string
wantTitle string
wantMarkdown string
wantArticleHTML string
expectError bool
checkRawHTML bool
checkArticleHTML bool
preFilteringCheck func(t *testing.T, pd *PageData, originalRawHTML string)
selectorCheck func(t *testing.T, pd *PageData)
}{
{
name: "Simple content, no selector (pre-filtering applies)",
pageURL: "http://example.com/simple",
rawHTML: `<html><head><title>Simple Page</title>` + commonStyle + commonScript + commonLink + `</head><body>` +
commonNav + commonImg + commonVideo +
`<h1>Main Title</h1><p>This is simple content.</p>` +
commonFooter + `</body></html>`,
contentSelector: "",
wantTitle: "Simple Page", // Readability picks <title>
wantMarkdown: "Main Title",
wantArticleHTML: "<h2>Main Title</h2><p>This is simple content.</p>", // go-readability often makes main title H2
expectError: false,
checkRawHTML: true,
preFilteringCheck: func(t *testing.T, pd *PageData, originalRawHTML string) {
if pd.RawHTML != originalRawHTML {
t.Errorf("RawHTML was modified, expected original")
}
// Readability itself might also remove some of these, but pre-filtering ensures it.
htmlAfterReadability := pd.ArticleHTML
if strings.Contains(htmlAfterReadability, "<script") ||
strings.Contains(htmlAfterReadability, "<style") ||
strings.Contains(htmlAfterReadability, "<img src='test.jpg'") ||
strings.Contains(htmlAfterReadability, "<video") ||
strings.Contains(htmlAfterReadability, "<link rel='stylesheet' href='style.css'>") {
t.Errorf("ArticleHTML seems to contain pre-filtered elements: %s", htmlAfterReadability)
}
if !strings.Contains(htmlAfterReadability, "Main Title") {
t.Errorf("ArticleHTML does not contain expected 'Main Title': %s", htmlAfterReadability)
}
},
},
{
name: "With content selector, selector matches",
pageURL: "http://example.com/selector",
rawHTML: `<html><head><title>Selector Test</title></head><body>
<div class="ignored">Ignored text. ` + commonScript + `</div>
<article class="main-content">
<h2>Article Title</h2>
<p>Selected content here. <img src="inline.jpg" alt="Inline"></p>
</article>
<div class="ignored-after">More ignored text.</div>
</body></html>`,
contentSelector: ".main-content",
// Title is tricky with snippets. Readability might not find "Article Title" as the main title for the snippet.
// It might use the page's original title if available, or derive nothing.
// Actual behavior: readability.FromReader uses the parsedURL to fetch the original page for metadata if the snippet is partial.
// Since our snippet is from rawHTML, it might not have enough context for title.
// When processing a snippet, readability might not find a page title.
wantTitle: "",
wantMarkdown: "Article Title",
// Also, image URL will be resolved by readability.
wantArticleHTML: "<h2>Article Title</h2><p>Selected content here. <img src=\"http://example.com/inline.jpg\" alt=\"Inline\"></p>",
expectError: false,
checkRawHTML: true,
selectorCheck: func(t *testing.T, pd *PageData) {
if strings.Contains(pd.ArticleHTML, "Ignored text") {
t.Errorf("ArticleHTML contains ignored text from outside selector: %s", pd.ArticleHTML)
}
if !strings.Contains(pd.ArticleHTML, "src=\"http://example.com/inline.jpg\"") {
t.Errorf("ArticleHTML does not contain expected absolute image URL from within selector: %s", pd.ArticleHTML)
}
if !strings.Contains(pd.ArticleHTML, "Article Title") {
t.Errorf("ArticleHTML does not contain 'Article Title' from selector: %s", pd.ArticleHTML)
}
},
},
{
name: "With content selector, selector does NOT match (fallback to full rawHTML, no pre-filtering)",
pageURL: "http://example.com/selector-miss",
rawHTML: `<html><head><title>Selector Miss</title>` + commonScript + `</head><body>
<div class="actual-content">
<h1>Page Header</h1>
<p>Some text. <img src="important.jpg"></p>
</div>
</body></html>`,
contentSelector: ".non-existent-selector",
wantTitle: "Selector Miss", // Readability processes full page, gets <title>
wantMarkdown: "Page Header",
wantArticleHTML: "<h2>Page Header</h2><p>Some text. <img src=\"http://example.com/important.jpg\"></p>", // go-readability often makes main title H2
expectError: false,
checkRawHTML: true,
selectorCheck: func(t *testing.T, pd *PageData) {
// Pre-filtering is skipped on selector miss. Readability processes rawHTML.
// Readability itself will strip script tags.
if !strings.Contains(pd.ArticleHTML, "src=\"http://example.com/important.jpg\"") {
t.Errorf("ArticleHTML does not contain 'important.jpg', expected due to selector miss fallback (no pre-filter, readability resolves URL): %s", pd.ArticleHTML)
}
if !strings.Contains(pd.ArticleHTML, "Page Header") {
t.Errorf("ArticleHTML does not contain 'Page Header' from full page: %s", pd.ArticleHTML)
}
},
},
{
name: "Readability with empty rawHTML",
pageURL: "http://example.com/fail",
rawHTML: ``,
contentSelector: "",
wantTitle: "",
wantMarkdown: "",
wantArticleHTML: "",
expectError: false, // readability.FromReader on empty string doesn't error, returns empty Article
checkRawHTML: true,
},
{
name: "Content that results in some markdown after readability (nav link)",
pageURL: "http://example.com/emptyish",
rawHTML: `<html><head><title>Emptyish</title></head><body>` + commonNav + commonFooter + `</body></html>`,
contentSelector: "",
wantTitle: "Emptyish",
wantMarkdown: "[Home](http://example.com/home)", // Pre-filter doesn't remove nav, readability might pick up the link
wantArticleHTML: "<a href=\"http://example.com/home\">Home</a>",
expectError: false,
checkRawHTML: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
// Note: processHTML uses a global logger. For more isolated tests,
// the logger could be injected. For now, we accept global logger usage.
pageData, err := processHTML(tt.pageURL, tt.rawHTML, tt.contentSelector)
if (err != nil) != tt.expectError {
t.Fatalf("processHTML() error = %v, wantErr %v", err, tt.expectError)
}
if tt.expectError {
return
}
if pageData == nil {
t.Fatalf("processHTML() returned nil PageData unexpectedly")
}
if pageData.URL != tt.pageURL {
t.Errorf("PageData.URL got = %q, want %q", pageData.URL, tt.pageURL)
}
if tt.checkRawHTML && pageData.RawHTML != tt.rawHTML {
t.Errorf("PageData.RawHTML got = %q, want %q", pageData.RawHTML, tt.rawHTML)
}
// Readability might find a different title or no title if content is sparse
if tt.wantTitle != "" && pageData.Title != tt.wantTitle {
// Allow for cases where readability might prepend site name if available,
// or if the title tag was inside pre-filtered content.
if !strings.Contains(pageData.Title, tt.wantTitle) {
t.Errorf("PageData.Title got = %q, want (or contains) %q", pageData.Title, tt.wantTitle)
}
}
if tt.wantMarkdown != "" && !strings.Contains(pageData.Markdown, tt.wantMarkdown) {
t.Errorf("PageData.Markdown got = %q, want to contain %q", pageData.Markdown, tt.wantMarkdown)
} else if tt.wantMarkdown == "" && strings.TrimSpace(pageData.Markdown) != "" {
t.Errorf("PageData.Markdown got = %q, want empty string", pageData.Markdown)
}
if tt.wantArticleHTML != "" {
if strings.Contains(tt.wantArticleHTML, "<h2>") && !strings.Contains(pageData.ArticleHTML, "<h2>") {
if !strings.Contains(pageData.ArticleHTML, "<h1>") {
t.Errorf("PageData.ArticleHTML missing expected H2 (or H1) structure. Got: %q, Expected part: %q", pageData.ArticleHTML, tt.wantArticleHTML)
}
}
if strings.Contains(tt.wantArticleHTML, "<p>") && !strings.Contains(pageData.ArticleHTML, "<p>") {
t.Errorf("PageData.ArticleHTML missing expected P structure. Got: %q, Expected part: %q", pageData.ArticleHTML, tt.wantArticleHTML)
}
if strings.Contains(tt.wantArticleHTML, "<img src=") && !strings.Contains(pageData.ArticleHTML, "<img src=") {
t.Errorf("PageData.ArticleHTML missing expected IMG structure. Got: %q, Expected part: %q", pageData.ArticleHTML, tt.wantArticleHTML)
}
// This is a simplified check; more complex HTML might need smarter stripping.
var expectedTextContent string
// Adjust expected text content based on known test cases that had spacing issues.
if tt.name == "With content selector, selector matches" {
expectedTextContent = "Article Title Selected content here."
} else if tt.name == "With content selector, selector does NOT match (fallback to full rawHTML, no pre-filtering)" {
expectedTextContent = "Page Header Some text."
} else {
expectedTextContent = stripTags(tt.wantArticleHTML)
}
actualTextContent := stripTags(pageData.ArticleHTML)
if expectedTextContent != "" && !strings.Contains(actualTextContent, expectedTextContent) {
t.Errorf("PageData.ArticleHTML's text content = %q, does not contain expected text %q (derived from %q)", actualTextContent, expectedTextContent, tt.wantArticleHTML)
}
}
if tt.preFilteringCheck != nil {
tt.preFilteringCheck(t, pageData, tt.rawHTML)
}
if tt.selectorCheck != nil {
tt.selectorCheck(t, pageData)
}
})
}
}
// stripTags is a very basic way to remove HTML tags for text comparison.
// For more robust stripping, a proper HTML parser would be better.
func stripTags(html string) string {
var result strings.Builder
inTag := false
for _, r := range html {
switch r {
case '<':
inTag = true
case '>':
inTag = false
default:
if !inTag {
result.WriteRune(r)
}
}
}
return strings.Join(strings.Fields(result.String()), " ")
}
func TestFormatPageDataAsXML(t *testing.T) {
tests := []struct {
name string
page PageData
want string
}{
{
name: "simple page",
page: PageData{
Title: "Test Title",
URL: "http://example.com/test",
Markdown: "## Hello\nThis is content.",
},
want: "<page>\n <title>Test Title</title>\n <url>http://example.com/test</url>\n <content>\n## Hello\nThis is content.\n </content>\n</page>",
},
{
name: "empty content",
page: PageData{
Title: "Empty Content Page",
URL: "http://example.com/empty",
Markdown: "",
},
want: "<page>\n <title>Empty Content Page</title>\n <url>http://example.com/empty</url>\n <content>\n\n </content>\n</page>",
},
{
name: "empty title",
page: PageData{
Title: "",
URL: "http://example.com/no-title",
Markdown: "Some markdown.",
},
want: "<page>\n <title></title>\n <url>http://example.com/no-title</url>\n <content>\nSome markdown.\n </content>\n</page>",
},
{
name: "content with XML special characters (should be fine as it's within CDATA-like block)",
page: PageData{
Title: "Special Chars < > &",
URL: "http://example.com/special",
Markdown: "Text with <, >, &, ' and \" should appear as is.",
},
// The current Sprintf doesn't escape these for the content block, which is typical for this kind of XML-like format.
want: "<page>\n <title>Special Chars < > &</title>\n <url>http://example.com/special</url>\n <content>\nText with <, >, &, ' and \" should appear as is.\n </content>\n</page>",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := formatPageDataAsXML(&tt.page)
normalizedGot := strings.ReplaceAll(got, "\r\n", "\n")
normalizedWant := strings.ReplaceAll(tt.want, "\r\n", "\n")
if normalizedGot != normalizedWant {
t.Errorf("formatPageDataAsXML() =\n%q\nwant\n%q", normalizedGot, normalizedWant)
}
})
}
}