<xsl:variable name="array1" as="element()*">
    <xsl:variable name="one"    select="'one'"/>
    <xsl:variable name="two"    select="'two'"/>
    <xsl:variable name="three"  select="'three'"/>
</xsl:variable>

<xsl:value-of select="$array2[.]"/>

<xsl:variable name="array2" as="element()*">
    <test>A</test>
    <test>B</test>
    <test>C</test>
</xsl:variable>

<xsl:value-of select="$array2[.]"/>