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xml2: Add tests for functions xpath_nodeset() and xpath_list()
These two functions with their different argument lists have never been tested in this module, so let's add something. Author: Ronan Dunklau Discussion: https://postgr.es/m/ZzMSJkiNZhimjXWx@paquier.xyz
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‎contrib/xml2/expected/xml2.out

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@@ -207,6 +207,45 @@ SELECT xslt_process('<employee><name>cim</name><age>30</age><pay>400</pay></empl
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(1 row)
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-- xpath_nodeset()
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages')
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FROM articles;
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xpath_nodeset
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----------------------------------------
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<author>test</author><pages>37</pages>
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(1 row)
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
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'item_without_toptag')
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FROM articles;
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xpath_nodeset
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------------------------------------------------------------------------------------------------------------------------------
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<item_without_toptag><author>test</author></item_without_toptag><item_without_toptag><pages>37</pages></item_without_toptag>
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(1 row)
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
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'result', 'item')
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FROM articles;
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xpath_nodeset
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-----------------------------------------------------------------------------------
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<result><item><author>test</author></item><item><pages>37</pages></item></result>
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(1 row)
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-- xpath_list()
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SELECT xpath_list(article_xml::text, '/article/author|/article/pages')
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FROM articles;
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xpath_list
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------------
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test,37
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(1 row)
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SELECT xpath_list(article_xml::text, '/article/author|/article/pages', '|')
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FROM articles;
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xpath_list
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------------
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test|37
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(1 row)
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-- possible security exploit
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SELECT xslt_process('<xml><foo>Hello from XML</foo></xml>',
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$$<xsl:stylesheet version="1.0"

‎contrib/xml2/expected/xml2_1.out

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@@ -151,6 +151,45 @@ SELECT xslt_process('<employee><name>cim</name><age>30</age><pay>400</pay></empl
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</xsl:template>
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</xsl:stylesheet>$$::text, 'n1="v1",n2="v2",n3="v3",n4="v4",n5="v5",n6="v6",n7="v7",n8="v8",n9="v9",n10="v10",n11="v11",n12="v12"'::text);
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ERROR: xslt_process() is not available without libxslt
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-- xpath_nodeset()
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages')
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FROM articles;
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xpath_nodeset
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----------------------------------------
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<author>test</author><pages>37</pages>
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(1 row)
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
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'item_without_toptag')
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FROM articles;
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xpath_nodeset
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------------------------------------------------------------------------------------------------------------------------------
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<item_without_toptag><author>test</author></item_without_toptag><item_without_toptag><pages>37</pages></item_without_toptag>
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(1 row)
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
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'result', 'item')
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FROM articles;
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xpath_nodeset
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-----------------------------------------------------------------------------------
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<result><item><author>test</author></item><item><pages>37</pages></item></result>
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(1 row)
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-- xpath_list()
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SELECT xpath_list(article_xml::text, '/article/author|/article/pages')
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FROM articles;
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xpath_list
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------------
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test,37
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(1 row)
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SELECT xpath_list(article_xml::text, '/article/author|/article/pages', '|')
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FROM articles;
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xpath_list
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------------
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test|37
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(1 row)
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-- possible security exploit
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SELECT xslt_process('<xml><foo>Hello from XML</foo></xml>',
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$$<xsl:stylesheet version="1.0"

‎contrib/xml2/sql/xml2.sql

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@@ -123,6 +123,22 @@ SELECT xslt_process('<employee><name>cim</name><age>30</age><pay>400</pay></empl
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</xsl:template>
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</xsl:stylesheet>$$::text, 'n1="v1",n2="v2",n3="v3",n4="v4",n5="v5",n6="v6",n7="v7",n8="v8",n9="v9",n10="v10",n11="v11",n12="v12"'::text);
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-- xpath_nodeset()
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages')
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FROM articles;
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
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'item_without_toptag')
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FROM articles;
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SELECT xpath_nodeset(article_xml::text, '/article/author|/article/pages',
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'result', 'item')
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FROM articles;
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-- xpath_list()
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SELECT xpath_list(article_xml::text, '/article/author|/article/pages')
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FROM articles;
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SELECT xpath_list(article_xml::text, '/article/author|/article/pages', '|')
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FROM articles;
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-- possible security exploit
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SELECT xslt_process('<xml><foo>Hello from XML</foo></xml>',
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$$<xsl:stylesheet version="1.0"

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