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import xml.Node
object Test {
def main(args: Array[String]): Unit = {
val noAttr = <t/>
val attrNull = <t a={ null: String }/>
val attrNone = <t a={ None: Option[Seq[Node]] }/>
val preAttrNull = <t p:a={ null: String }/>
val preAttrNone = <t p:a={ None: Option[Seq[Node]] }/>
assert(noAttr == attrNull)
assert(noAttr == attrNone)
assert(noAttr == preAttrNull)
assert(noAttr == preAttrNone)
val noAttrStr = "<t></t>"
assert(noAttr.toString() == noAttrStr)
assert(attrNull.toString() == noAttrStr)
assert(attrNone.toString() == noAttrStr)
assert(preAttrNull.toString() == noAttrStr)
assert(preAttrNone.toString() == noAttrStr)
val xml1 = <t b="1" d="2"/>
val xml2 = <t a={ null: String } p:a={ null: String } b="1" c={ null: String } d="2"/>
val xml3 = <t b="1" c={ null: String } d="2" a={ null: String } p:a={ null: String }/>
assert(xml1 == xml2)
assert(xml1 == xml3)
val xml1Str = "<t d=\"2\" b=\"1\"></t>"
assert(xml1.toString() == xml1Str)
assert(xml2.toString() == xml1Str)
assert(xml3.toString() == xml1Str)
}
}
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