Add regression test

utilities/NekMesh/CMakeLists.txt

@@ -136,6 +136,7 @@ ADD_NEKTAR_TEST        (Gmsh/SquareTriLinear)
 # Nektar tests
 ADD_NEKTAR_TEST        (Nektar/HexLinear)
 ADD_NEKTAR_TEST        (Nektar/Tube45)
+ADD_NEKTAR_TEST        (Nektar/UKMesh)
 # Nek5000 tests
 ADD_NEKTAR_TEST        (Nek5000/3da)
 ADD_NEKTAR_TEST        (Nek5000/r1854a)

utilities/NekMesh/Tests/Nektar/UKMesh.tst

+<?xml version="1.0" encoding="utf-8" ?>
+<test>
+    <description>Nektar triangular mesh using older-style rea</description>
+    <executable>NekMesh</executable>
+    <parameters>-m jac:list UKMesh.rea.gz UKMesh.xml:xml:test</parameters>
+    <files>
+        <file description="Input File">UKMesh.rea.gz</file>
+    </files>
+    <metrics>
+        <metric type="regex" id="1">
+            <regex>^Total negative Jacobians: (\d+)</regex>
+            <matches>
+                <match>
+                    <field id="0">0</field>
+                </match>
+            </matches>
+        </metric>
+    </metrics>
+</test>