xslt test if an attribute exist

I have this following xslt. I notice that sometimes the element name 'tuple' has an attribute. I want to remove the attribute and add it as an Element. I added a test to verify if 'tuple' has an attribute but it returns a blank 'ecatalogue' element.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
    xmlns:xsl="http://ift.tt/tCZ8VR">
    <xsl:output method="xml" version="1.0" encoding="UTF-8"
        indent="yes" />
    <xsl:template match="@* | node()">
        <xsl:copy>
            <xsl:apply-templates select="@* | node()" />
        </xsl:copy>
    </xsl:template>
    <xsl:template match="atom">
        <xsl:element name="{@name}">
            <xsl:apply-templates />
        </xsl:element>
    </xsl:template>
    <xsl:template match="table">
        <xsl:element name="{@name}">
            <xsl:apply-templates />
        </xsl:element>
    </xsl:template>
    <!--this test doesn't work properly -->
    <xsl:template match="tuple">
      <xsl:choose>
        <xsl:when test="@name">
             <xsl:apply-templates />
        </xsl:when>
        <xsl:otherwise>
            <!-- nothing to do
            the node should stay the same
        -->
        </xsl:otherwise>
      </xsl:choose>
    </xsl:template>
    <!-- end test -->
</xsl:stylesheet>

result I had with this template above.

<ecatalogue>

</ecatalogue>

http://ift.tt/16EGnoD