diff --git a/python/plugins/processing/tests/testdata/expected/projection_candidates.gfs b/python/plugins/processing/tests/testdata/expected/projection_candidates.gfs
deleted file mode 100644
index 5dd5db8b754..00000000000
--- a/python/plugins/processing/tests/testdata/expected/projection_candidates.gfs
+++ /dev/null
@@ -1,16 +0,0 @@
-<GMLFeatureClassList>
-  <GMLFeatureClass>
-    <Name>projection_candidates</Name>
-    <ElementPath>projection_candidates</ElementPath>
-    <GeometryType>100</GeometryType>
-    <DatasetSpecificInfo>
-      <FeatureCount>8</FeatureCount>
-    </DatasetSpecificInfo>
-    <PropertyDefn>
-      <Name>auth_id</Name>
-      <ElementPath>auth_id</ElementPath>
-      <Type>String</Type>
-      <Width>14</Width>
-    </PropertyDefn>
-  </GMLFeatureClass>
-</GMLFeatureClassList>
diff --git a/python/plugins/processing/tests/testdata/expected/projection_candidates.gml b/python/plugins/processing/tests/testdata/expected/projection_candidates.gml
index f46f2f4b864..404478051d1 100644
--- a/python/plugins/processing/tests/testdata/expected/projection_candidates.gml
+++ b/python/plugins/processing/tests/testdata/expected/projection_candidates.gml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ogr:FeatureCollection
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-     xsi:schemaLocation=""
+     xsi:schemaLocation="http://ogr.maptools.org/ projection_candidates.xsd"
      xmlns:ogr="http://ogr.maptools.org/"
      xmlns:gml="http://www.opengis.net/gml">
   <gml:boundedBy><gml:null>missing</gml:null></gml:boundedBy>
@@ -46,4 +46,9 @@
       <ogr:auth_id>EPSG:5552</ogr:auth_id>
     </ogr:projection_candidates>
   </gml:featureMember>
+  <gml:featureMember>
+    <ogr:projection_candidates fid="projection_candidates.8">
+      <ogr:auth_id>EPSG:7856</ogr:auth_id>
+    </ogr:projection_candidates>
+  </gml:featureMember>
 </ogr:FeatureCollection>
diff --git a/python/plugins/processing/tests/testdata/expected/projection_candidates.xsd b/python/plugins/processing/tests/testdata/expected/projection_candidates.xsd
new file mode 100644
index 00000000000..d4837844a09
--- /dev/null
+++ b/python/plugins/processing/tests/testdata/expected/projection_candidates.xsd
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema targetNamespace="http://ogr.maptools.org/" xmlns:ogr="http://ogr.maptools.org/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml" elementFormDefault="qualified" version="1.0">
+<xs:import namespace="http://www.opengis.net/gml" schemaLocation="http://schemas.opengis.net/gml/2.1.2/feature.xsd"/>
+<xs:element name="FeatureCollection" type="ogr:FeatureCollectionType" substitutionGroup="gml:_FeatureCollection"/>
+<xs:complexType name="FeatureCollectionType">
+  <xs:complexContent>
+    <xs:extension base="gml:AbstractFeatureCollectionType">
+      <xs:attribute name="lockId" type="xs:string" use="optional"/>
+      <xs:attribute name="scope" type="xs:string" use="optional"/>
+    </xs:extension>
+  </xs:complexContent>
+</xs:complexType>
+<xs:element name="projection_candidates" type="ogr:projection_candidates_Type" substitutionGroup="gml:_Feature"/>
+<xs:complexType name="projection_candidates_Type">
+  <xs:complexContent>
+    <xs:extension base="gml:AbstractFeatureType">
+      <xs:sequence>
+        <xs:element name="auth_id" nillable="true" minOccurs="0" maxOccurs="1">
+          <xs:simpleType>
+            <xs:restriction base="xs:string">
+              <xs:maxLength value="20"/>
+            </xs:restriction>
+          </xs:simpleType>
+        </xs:element>
+      </xs:sequence>
+    </xs:extension>
+  </xs:complexContent>
+</xs:complexType>
+</xs:schema>