package seaglass_test

import (
	"testing"

	"git.golem15.com/golem15/summercms/modules/seaglass"
)

// TestSanitizeByteStable pins D-10's byte-stability promise: HTML the policy
// keeps whole comes back byte for byte, with attributes in their source order,
// entities as written, whitespace and quoting untouched, and a zero report.
func TestSanitizeByteStable(t *testing.T) {
	for _, html := range []string{
		"",
		"plain text",
		"<p>One paragraph.</p>",
		"<p>Mushrooms <strong>can</strong> <em>help</em>.</p>\n\n<p>Second.</p>",
		`<a title="t" href="https://example.com/a?b=1&amp;c=2" class="x y">attributes in source order</a>`,
		`<a class="x" href="/kontakt">relative</a> <a href="mailto:a@example.com">mail</a> <a href="tel:+48123456">tel</a>`,
		`<p>Entities: &amp; &lt;tag&gt; &quot;q&quot; &#39;s&#39; &nbsp; &copy; &#x2014; &#8212;</p>`,
		`<p>Raw text quotes: It's "fine" &amp; done</p>`,
		`<p class='single-quoted'>single quotes stay</p>`,
		`<p CLASS="upper">upper-case attribute name</p>`,
		"<ul>\n  <li>one</li>\n  <li>two</li>\n</ul>",
		"<ol><li>a<ol><li>nested</li></ol></li></ol>",
		`<h2 dir="rtl">heading</h2><h3>h3</h3><blockquote><p>quote</p></blockquote>`,
		`<p>line<br>break<br/>self-closed</p>`,
		`<img src="/media/a.jpg" alt="An image" width="10" height="20">`,
		`<table><thead><tr><th>h</th></tr></thead><tbody><tr><td>c</td></tr></tbody></table>`,
		`<p style="text-align: center; color: red">styled</p>`,
		`<div itemscope itemtype="https://schema.org/Recipe"><span itemprop="name">Tea</span></div>`,
		`<p><sup><a href="#fn1" role="doc-noteref">1</a></sup></p><div role="doc-endnotes"><p id="fn1">note</p></div>`,
		`<pre><code>if a &lt; b { return }</code></pre>`,
		"<p>Zażółć gęślą jaźń — unicode “quotes”</p>",
	} {
		got, report := seaglass.SanitizeReport(html)
		if got != html {
			t.Errorf("SanitizeReport(%q) = %q, want the input byte for byte", html, got)
		}
		if report.Changed || report.ElementCount != 0 || report.AttributeCount != 0 || report.Comments != 0 || len(report.Elements) != 0 || len(report.Attributes) != 0 {
			t.Errorf("SanitizeReport(%q) report = %+v, want zero", html, report)
		}
		if out := seaglass.Sanitize(html); out != html {
			t.Errorf("Sanitize(%q) = %q", html, out)
		}
		if err := seaglass.Check(html); err != nil {
			t.Errorf("Check(%q) = %v", html, err)
		}
	}
}