diff --git a/extensions/wikidata/pom.xml b/extensions/wikidata/pom.xml
index 93b6f36ab..83a6f8fa4 100644
--- a/extensions/wikidata/pom.xml
+++ b/extensions/wikidata/pom.xml
@@ -24,6 +24,11 @@
       </resource>
     </resources>
     <testSourceDirectory>tests/src</testSourceDirectory>
+    <testResources>
+      <testResource>
+        <directory>tests/data</directory>
+      </testResource>
+    </testResources>
     <outputDirectory>module/MOD-INF/classes</outputDirectory>
     <plugins>
       <plugin>
@@ -151,6 +156,16 @@
       <version>0.9.0-SNAPSHOT</version>
     </dependency>
 
+    <!-- testing dependencies -->
+
+    <dependency>
+      <groupId>org.openrefine</groupId>
+      <artifactId>main</artifactId>
+      <version>3.0-SNAPSHOT</version>
+      <classifier>tests</classifier>
+      <type>test-jar</type>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.testng</groupId>
       <artifactId>testng</artifactId>
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/PreviewWikibaseSchemaCommandTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/PreviewWikibaseSchemaCommandTest.java
index d1026a28c..81596105e 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/PreviewWikibaseSchemaCommandTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/PreviewWikibaseSchemaCommandTest.java
@@ -52,7 +52,7 @@ public class PreviewWikibaseSchemaCommandTest extends SchemaCommandTest {
     @Test
     public void testValidSchema()
             throws JSONException, IOException, ServletException {
-        String schemaJson = jsonFromFile("data/schema/inception.json").toString();
+        String schemaJson = jsonFromFile("schema/inception.json").toString();
         when(request.getParameter("schema")).thenReturn(schemaJson);
 
         command.doPost(request, response);
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/SaveWikibaseSchemaCommandTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/SaveWikibaseSchemaCommandTest.java
index 081e44e85..365bb1796 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/SaveWikibaseSchemaCommandTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/commands/SaveWikibaseSchemaCommandTest.java
@@ -44,7 +44,7 @@ public class SaveWikibaseSchemaCommandTest extends SchemaCommandTest {
     @Test
     public void testValidSchema()
             throws ServletException, IOException {
-        String schemaJson = jsonFromFile("data/schema/inception.json").toString();
+        String schemaJson = jsonFromFile("schema/inception.json").toString();
         when(request.getParameter("schema")).thenReturn(schemaJson);
 
         command.doPost(request, response);
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/exporters/QuickStatementsExporterTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/exporters/QuickStatementsExporterTest.java
index dfc15bc9d..b5d56fbbd 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/exporters/QuickStatementsExporterTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/exporters/QuickStatementsExporterTest.java
@@ -70,7 +70,7 @@ public class QuickStatementsExporterTest extends RefineTest {
             throws JSONException, IOException {
         Project project = this.createCSVProject(TestingData.inceptionWithNewCsv);
         TestingData.reconcileInceptionCells(project);
-        JSONObject serialized = TestingData.jsonFromFile("data/schema/inception.json");
+        JSONObject serialized = TestingData.jsonFromFile("schema/inception.json");
         WikibaseSchema schema = WikibaseSchema.reconstruct(serialized);
         project.overlayModels.put("wikibaseSchema", schema);
         Engine engine = new Engine(project);
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/PerformWikibaseEditsOperationTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/PerformWikibaseEditsOperationTest.java
index 348941cd2..a0a91b4c7 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/PerformWikibaseEditsOperationTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/PerformWikibaseEditsOperationTest.java
@@ -53,7 +53,7 @@ public class PerformWikibaseEditsOperationTest extends OperationTest {
     @Override
     public JSONObject getJson()
             throws Exception {
-        return TestingData.jsonFromFile("data/operations/perform-edits.json");
+        return TestingData.jsonFromFile("operations/perform-edits.json");
     }
     
     @Test(expectedExceptions=IllegalArgumentException.class)
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/SaveWikibaseSchemaOperationTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/SaveWikibaseSchemaOperationTest.java
index a587de25c..6c5e5db5a 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/SaveWikibaseSchemaOperationTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/operations/SaveWikibaseSchemaOperationTest.java
@@ -53,13 +53,13 @@ public class SaveWikibaseSchemaOperationTest extends OperationTest {
     @Override
     public JSONObject getJson()
             throws Exception {
-        return TestingData.jsonFromFile("data/operations/save-schema.json");
+        return TestingData.jsonFromFile("operations/save-schema.json");
     }
 
     @Test
     public void testLoadChange()
             throws Exception {
-        JSONObject schemaJson = TestingData.jsonFromFile("data/schema/inception.json");
+        JSONObject schemaJson = TestingData.jsonFromFile("schema/inception.json");
         String changeString = "newSchema=" + schemaJson.toString() + "\n" + "oldSchema=\n" + "/ec/";
         WikibaseSchema schema = WikibaseSchema.reconstruct(schemaJson);
 
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WikibaseSchemaTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WikibaseSchemaTest.java
index 2a4c2c9c1..15078ff52 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WikibaseSchemaTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WikibaseSchemaTest.java
@@ -100,7 +100,7 @@ public class WikibaseSchemaTest extends RefineTest {
     @Test
     public void testSerialize()
             throws JSONException, IOException {
-        JSONObject serialized = TestingData.jsonFromFile("data/schema/history_of_medicine.json");
+        JSONObject serialized = TestingData.jsonFromFile("schema/history_of_medicine.json");
         WikibaseSchema parsed = WikibaseSchema.reconstruct(serialized);
         StringWriter writer = new StringWriter();
         JSONWriter jsonWriter = new JSONWriter(writer);
@@ -108,7 +108,7 @@ public class WikibaseSchemaTest extends RefineTest {
         writer.close();
         JSONObject newSerialized = ParsingUtilities.evaluateJsonStringToObject(writer.toString());
         // toString because it looks like JSONObject equality isn't great…
-        assertEquals(TestingData.jsonFromFile("data/schema/history_of_medicine_normalized.json").toString(),
+        assertEquals(TestingData.jsonFromFile("schema/history_of_medicine_normalized.json").toString(),
                 newSerialized.toString());
     }
 
@@ -117,14 +117,14 @@ public class WikibaseSchemaTest extends RefineTest {
             throws JSONException, IOException {
         // this json file was generated by an earlier version of the software
         // it contains extra "type" fields that are now ignored.
-        JSONObject serialized = TestingData.jsonFromFile("data/schema/roarmap.json");
+        JSONObject serialized = TestingData.jsonFromFile("schema/roarmap.json");
         WikibaseSchema.reconstruct(serialized);
     }
 
     @Test
     public void testEvaluate()
             throws JSONException, IOException {
-        JSONObject serialized = TestingData.jsonFromFile("data/schema/inception.json");
+        JSONObject serialized = TestingData.jsonFromFile("schema/inception.json");
         WikibaseSchema schema = WikibaseSchema.reconstruct(serialized);
         Engine engine = new Engine(project);
         List<ItemUpdate> updates = schema.evaluate(project, engine);
@@ -146,7 +146,7 @@ public class WikibaseSchemaTest extends RefineTest {
     @Test
     public void testEvaluateRespectsFacets()
             throws JSONException, IOException {
-        JSONObject serialized = TestingData.jsonFromFile("data/schema/inception.json");
+        JSONObject serialized = TestingData.jsonFromFile("schema/inception.json");
         WikibaseSchema schema = WikibaseSchema.reconstruct(serialized);
         Engine engine = new Engine(project);
         JSONObject engineConfig = new JSONObject("{\n" + "      \"mode\": \"row-based\",\n" + "      \"facets\": [\n"
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/testing/TestingData.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/testing/TestingData.java
index 3542824d2..efa25756f 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/testing/TestingData.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/testing/TestingData.java
@@ -24,10 +24,12 @@
 package org.openrefine.wikidata.testing;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.Collections;
 
+import org.apache.commons.io.IOUtils;
 import org.json.JSONException;
 import org.json.JSONObject;
 import org.openrefine.wikidata.schema.WbLanguageConstant;
@@ -133,8 +135,8 @@ public class TestingData {
 
     public static JSONObject jsonFromFile(String filename)
             throws IOException, JSONException {
-        byte[] contents = Files.readAllBytes(Paths.get(filename));
-        String decoded = new String(contents, "utf-8");
+        InputStream f = TestingData.class.getClassLoader().getResourceAsStream(filename);
+        String decoded = IOUtils.toString(f);
         return ParsingUtilities.evaluateJsonStringToObject(decoded);
     }