v/vlib/encoding/html/escape_test.v

import encoding.html

fn test_escape_html() {
	assert html.escape('<>&') == '&lt;&gt;&amp;'
	assert html.escape('No change') == 'No change'
	assert html.escape('<b>Bold text</b>') == '&lt;b&gt;Bold text&lt;/b&gt;'
	assert html.escape('<img />') == '&lt;img /&gt;'
	assert html.escape("' onmouseover='alert(1)'") == '&#39; onmouseover=&#39;alert(1)&#39;'
	assert html.escape("<a href='http://www.example.com'>link</a>") == '&lt;a href=&#39;http://www.example.com&#39;&gt;link&lt;/a&gt;'
	assert html.escape("<script>alert('hello');</script>") == '&lt;script&gt;alert(&#39;hello&#39;);&lt;/script&gt;'
	// Cases obtained from:
	// https://github.com/apache/commons-lang/blob/master/src/test/java/org/apache/commons/lang3/StringEscapeUtilsTest.java
	assert html.escape('plain text') == 'plain text'
	assert html.escape('') == ''
	assert html.escape('bread & butter') == 'bread &amp; butter'
	assert html.escape('"bread" & butter') == '&#34;bread&#34; &amp; butter'
	assert html.escape('greater than >') == 'greater than &gt;'
	assert html.escape('< less than') == '&lt; less than'
	// Leave accents as-is
	assert html.escape('café') == 'café'
	assert html.escape('<p>façade</p>') == '&lt;p&gt;façade&lt;/p&gt;'
}