Update.

test/html/params.wren

@@ -0,0 +1,12 @@
+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+var encoded = Html.encodeParams({"name": "John Doe", "age": 30})
+System.print(encoded.contains("name=John+Doe")) // expect: true
+System.print(encoded.contains("age=30")) // expect: true
+System.print(encoded.contains("&")) // expect: true
+
+var decoded = Html.decodeParams("name=John+Doe&age=30")
+System.print(decoded["name"]) // expect: John Doe
+System.print(decoded["age"]) // expect: 30

test/html/quote.wren

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+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.quote("<script>")) // expect: &lt;script&gt;
+System.print(Html.quote("a & b")) // expect: a &amp; b
+System.print(Html.quote("\"quoted\"")) // expect: &quot;quoted&quot;
+System.print(Html.quote("it's")) // expect: it&#39;s
+System.print(Html.quote("normal text")) // expect: normal text
+
+System.print(Html.unquote("&lt;script&gt;")) // expect: <script>
+System.print(Html.unquote("a &amp; b")) // expect: a & b
+System.print(Html.unquote("&quot;quoted&quot;")) // expect: "quoted"

test/html/slugify.wren

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+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.slugify("Hello World")) // expect: hello-world
+System.print(Html.slugify("This is a TEST")) // expect: this-is-a-test
+System.print(Html.slugify("foo---bar")) // expect: foo-bar
+System.print(Html.slugify("  spaces  ")) // expect: spaces
+System.print(Html.slugify("test123")) // expect: test123
+System.print(Html.slugify("UPPERCASE")) // expect: uppercase

test/html/urldecode.wren

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+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.urldecode("hello+world")) // expect: hello world
+
+var encoded1 = "foo" + "\%3D" + "bar"
+System.print(Html.urldecode(encoded1)) // expect: foo=bar
+
+var encoded2 = "a" + "\%26" + "b"
+System.print(Html.urldecode(encoded2)) // expect: a&b
+
+System.print(Html.urldecode("test")) // expect: test
+System.print(Html.urldecode("")) // expect:

test/html/urlencode.wren

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+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.urlencode("hello world")) // expect: hello+world
+System.print(Html.urlencode("foo=bar")) // expect: foo%3Dbar
+System.print(Html.urlencode("a&b")) // expect: a%26b
+System.print(Html.urlencode("test")) // expect: test
+System.print(Html.urlencode("")) // expect: