[xsl] Does it make sense to collect elements with a certain value then assert that the elements I've collected have that certain value?

["Roger L Costello costello@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Folks,

$airport-id holds the identifier of an airport.

I use $airport-id to collect <row> elements in $airports-nav-records with a
matching ARPT_IDENT:

<xsl:variable name="nav-records-for-this-airport"
                       select="$airports-nav-records//row[ARPT_IDENT eq
$airport-id]"
                       as="element(row)*"/>

Does it make sense to verify that every <row> element in
$nav-records-for-this-airport has an ARPT_IDENT that matches $airport-id? Is
there a benefit to this assert:

<xsl:assert test="every $i in $nav-records-for-this-airport satisfies
$i/ARPT_IDENT eq $airport-id "/>

To my way of thinking, there is no benefit. I collected <row> elements with a
matching ARPT_IDENT, then the assert tests that the collected <row> elements
have a matching ARPT_IDENT. The assert seems
pointless/redundant/useless/wasteful. Am I missing something?

Here's the assert in context:

<xsl:for-each select="$airports/*/row">
        <xsl:variable name="airport-id"
                               select="ARPT_IDENT"
                               as="xs:string"/>
        <xsl:variable name="nav-records-for-this-airport"
                               select="$airports-nav-records//row[ARPT_IDENT
eq $airport-id]"
                               as="element(row)*"/>
        <xsl:assert test="every $i in $nav-records-for-this-airport satisfies
$i/ARPT_IDENT eq $airport-id "/>