test.xml

<xml xmlns="urn:dh">
	<!-- count of elements -->
	<test root="A">
		<element>true</element>
	</test>
	<test root="A">
		<element>false</element>
		<element>false</element>
	</test>
	<!-- attibute equivalence -->
	<test root="B">
		<element atttribute="ok">true</element>
	</test>
	<test root="B">
		<element atttribute="notok">false</element>
	</test>
	<!-- child presence  -->
	<test root="C">
		<element>
			<child>true</child>
		</element>
	</test>
	<test root="C">
		<element>
			<notchild>false</notchild>
		</element>
	</test>
	<!-- conditional child presence  -->
	<test root="D">
		<element attribute="needChild">
			<child>true</child>
		</element>
	</test>
	<test root="D">
		<element attribute="needNoChild">true</element>
	</test>
	<test root="D">
		<element attribute="needChild">false</element>
	</test>
	<!-- OR presence  -->
	<test root="E">
		<element>
			<firstChild>true</firstChild>
		</element>
	</test>
	<test root="E">
		<element>
			<secondChild>true</secondChild>
		</element>
	</test>
	<test root="E">
		<element>
			<notChild>false</notChild>
		</element>
	</test>
	<!-- AND presence  -->
	<test root="F">
		<element>
			<firstChild>true</firstChild>
			<secondChild>true</secondChild>
		</element>
	</test>
	<test root="F">
		<element>
			<secondChild>false</secondChild>
		</element>
	</test>
	<test root="F">
		<element>
			<notChild>false</notChild>
		</element>
	</test>
	<!-- Element value  -->
	<test root="G">
		<element>true</element>
	</test>
	<test root="G">
		<element>false</element>
	</test>
</xml>