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v/vlib/encoding/html/escape_test.v

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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)'") == '&#x27; onmouseover=&#x27;alert(1)&#x27;'
assert html.escape("<a href='http://www.example.com'>link</a>") == '&lt;a href=&#x27;http://www.example.com&#x27;&gt;link&lt;/a&gt;'
assert html.escape("<script>alert('hello');</script>") == '&lt;script&gt;alert(&#x27;hello&#x27;);&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') == '&quot;bread&quot; &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;'
}