diff --git a/test-suite/tests/ab-filter-001.xml b/test-suite/tests/ab-filter-001.xml
new file mode 100644
index 00000000..21460efd
--- /dev/null
+++ b/test-suite/tests/ab-filter-001.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<t:test expected="pass"
+        xmlns:t="http://xproc.org/ns/testsuite/3.0">
+   <t:info>
+      <t:title>p:filter-001 (AB)</t:title>
+      <t:revision-history>
+         <t:revision>
+            <t:date>2024-05-12</t:date>
+            <t:author>
+               <t:name>Achim Berndzen</t:name>
+            </t:author>
+            <t:description xmlns="http://www.w3.org/1999/xhtml">
+               <p>Ported test from XProc (1.0) test suite.</p>
+            </t:description>
+         </t:revision>
+      </t:revision-history>
+   </t:info>
+   <t:description xmlns="http://www.w3.org/1999/xhtml">
+      <p>Tests p:filter with a variable in p:with-option.</p>
+   </t:description>
+   <t:pipeline>
+      <p:declare-step version="3.0"
+                      xmlns:p="http://www.w3.org/ns/xproc">
+         <p:output port="result"/>
+         <p:variable name="element" select="'p'"/>
+         
+         <p:filter>
+            <p:with-input>
+               <doc>
+                  <?pi test?>
+                  <p>This is a p.</p>
+               </doc>
+            </p:with-input>
+            <p:with-option name="select" select="concat('//*[local-name(.) = &quot;',$element,'&quot;]')"/>
+         </p:filter>
+      </p:declare-step>
+   </t:pipeline>
+   <t:schematron>
+      <s:schema queryBinding="xslt2"
+                xmlns:s="http://purl.oclc.org/dsdl/schematron"
+                xmlns="http://www.w3.org/1999/xhtml">
+         <s:pattern>
+            <s:rule context="/">
+               <s:assert test="p">Root element is not 'p'.</s:assert>
+               <s:assert test="p/text()='This is a p.'">Text content of 'p' is wrong.</s:assert>
+            </s:rule>
+         </s:pattern>
+      </s:schema>
+   </t:schematron>
+</t:test>
\ No newline at end of file
diff --git a/test-suite/tests/ab-filter-002.xml b/test-suite/tests/ab-filter-002.xml
new file mode 100644
index 00000000..474966e5
--- /dev/null
+++ b/test-suite/tests/ab-filter-002.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<t:test expected="pass"
+        xmlns:t="http://xproc.org/ns/testsuite/3.0">
+   <t:info>
+      <t:title>p:filter-002 (AB)</t:title>
+      <t:revision-history>
+         <t:revision>
+            <t:date>2024-05-12</t:date>
+            <t:author>
+               <t:name>Achim Berndzen</t:name>
+            </t:author>
+            <t:description xmlns="http://www.w3.org/1999/xhtml">
+               <p>Ported test from XProc (1.0) test suite.</p>
+            </t:description>
+         </t:revision>
+      </t:revision-history>
+   </t:info>
+   <t:description xmlns="http://www.w3.org/1999/xhtml">
+      <p>Tests p:filter with an unused element name.</p>
+   </t:description>
+   <t:pipeline>
+      <p:declare-step version="3.0"
+                      xmlns:p="http://www.w3.org/ns/xproc">
+         <p:output port="result"/>
+         
+         <p:filter select="/someunknownelement">
+            <p:with-input>
+               <doc>
+                  <?pi test?>
+                  <p>This is a p.</p>
+               </doc>
+            </p:with-input>
+         </p:filter>
+         <p:wrap-sequence wrapper="result" />
+      </p:declare-step>
+   </t:pipeline>
+   <t:schematron>
+      <s:schema queryBinding="xslt2"
+                xmlns:s="http://purl.oclc.org/dsdl/schematron"
+                xmlns="http://www.w3.org/1999/xhtml">
+         <s:pattern>
+            <s:rule context="/">
+               <s:assert test="result">Root element is not 'result'.</s:assert>
+               <s:assert test="empty(result/*)">Root element should have no children.</s:assert>
+            </s:rule>
+         </s:pattern>
+      </s:schema>
+   </t:schematron>
+</t:test>
\ No newline at end of file
diff --git a/test-suite/tests/ab-filter-003.xml b/test-suite/tests/ab-filter-003.xml
new file mode 100644
index 00000000..ef8f2ffc
--- /dev/null
+++ b/test-suite/tests/ab-filter-003.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<t:test expected="pass"
+        xmlns:t="http://xproc.org/ns/testsuite/3.0">
+   <t:info>
+      <t:title>p:filter-003 (AB)</t:title>
+      <t:revision-history>
+         <t:revision>
+            <t:date>2024-05-12</t:date>
+            <t:author>
+               <t:name>Achim Berndzen</t:name>
+            </t:author>
+            <t:description xmlns="http://www.w3.org/1999/xhtml">
+               <p>Ported test from XProc (1.0) test suite.</p>
+            </t:description>
+         </t:revision>
+      </t:revision-history>
+   </t:info>
+   <t:description xmlns="http://www.w3.org/1999/xhtml">
+      <p>Tests p:filter.</p>
+   </t:description>
+   <t:pipeline>
+      <p:declare-step version="3.0"
+                      xmlns:p="http://www.w3.org/ns/xproc">
+         <p:output port="result"/>
+         
+         <p:filter select="/doc/*">
+            <p:with-input>
+               <doc>
+                  <?pi test?>
+                  <p>This is a p.</p>
+               </doc>
+            </p:with-input>
+         </p:filter>
+      </p:declare-step>
+   </t:pipeline>
+   <t:schematron>
+      <s:schema queryBinding="xslt2"
+                xmlns:s="http://purl.oclc.org/dsdl/schematron"
+                xmlns="http://www.w3.org/1999/xhtml">
+         <s:pattern>
+            <s:rule context="/">
+               <s:assert test="p">Root element is not 'p'.</s:assert>
+               <s:assert test="p/text()='This is a p.'">Text content of 'p' is wrong.</s:assert>
+            </s:rule>
+         </s:pattern>
+      </s:schema>
+   </t:schematron>
+</t:test>
\ No newline at end of file