diff --git a/test/unit/3dtileslayerprocess.js b/test/unit/3dtileslayerprocess.js
index a788523c75..56f61fdff5 100644
--- a/test/unit/3dtileslayerprocess.js
+++ b/test/unit/3dtileslayerprocess.js
@@ -6,8 +6,8 @@ import View from 'Core/View';
 import GlobeView from 'Core/Prefab/GlobeView';
 import { HttpsProxyAgent } from 'https-proxy-agent';
 import Coordinates from 'Core/Geographic/Coordinates';
-import Fetcher from 'Provider/Fetcher';
 import sinon from 'sinon';
+import Fetcher from 'Provider/Fetcher';
 import Renderer from './bootstrap';
 
 import tilesetDiscretLOD from '../data/unitTest/3dTiles/tilesetDiscretLOD.json';
diff --git a/test/unit/3dtileslayerstyle.js b/test/unit/3dtileslayerstyle.js
index fb4fda7493..8e93c64310 100644
--- a/test/unit/3dtileslayerstyle.js
+++ b/test/unit/3dtileslayerstyle.js
@@ -7,55 +7,70 @@ import PlanarView from 'Core/Prefab/PlanarView';
 import C3DTBatchTable from 'Core/3DTiles/C3DTBatchTable';
 import C3DTilesSource from 'Source/C3DTilesSource';
 import C3DTilesLayer from 'Layer/C3DTilesLayer';
+import sinon from 'sinon';
+import Fetcher from 'Provider/Fetcher';
 import Renderer from './bootstrap';
 
+import tileset from '../data/unitTest/3dTiles/tileset.json';
+
 describe('3DTilesLayer Style', () => {
-    // Define crs
-    proj4.defs('EPSG:3946', '+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
+    let view;
+    let createTileContent;
+    let stubFetcherJson;
+
+    before(function () {
+        stubFetcherJson = sinon.stub(Fetcher, 'json')
+            .callsFake(() => Promise.resolve(JSON.parse(tileset)));
+
+        // Define crs
+        proj4.defs('EPSG:3946', '+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
 
-    // Define geographic extent: CRS, min/max X, min/max Y
-    const extent = new Extent('EPSG:3946',
-        1840816.94334, 1843692.32501,
-        5175036.4587, 5177412.82698);
+        // Define geographic extent: CRS, min/max X, min/max Y
+        const extent = new Extent('EPSG:3946',
+            1840816.94334, 1843692.32501,
+            5175036.4587, 5177412.82698);
 
-    const renderer = new Renderer();
+        const renderer = new Renderer();
 
-    const view = new PlanarView(renderer.domElement, extent, { renderer, noControls: true });
+        view = new PlanarView(renderer.domElement, extent, { renderer, noControls: true });
 
-    // Create a 'fake' tile content for this test purpose
-    const createTileContent = (tileId) => {
-        const geometry = new THREE.SphereGeometry(15, 32, 16);
-        const material = new THREE.MeshBasicMaterial({ color: 0xffff00 });
+        // Create a 'fake' tile content for this test purpose
+        createTileContent = (tileId) => {
+            const geometry = new THREE.SphereGeometry(15, 32, 16);
+            const material = new THREE.MeshBasicMaterial({ color: 0xffff00 });
 
-        // Add _BATCHID geometry attributes
-        const array = [];
-        let currentBatchId = Math.round(Math.random() * 50);
-        for (let index = 0; index < geometry.attributes.position.count; index++) {
-            array.push(currentBatchId);
+            // Add _BATCHID geometry attributes
+            const array = [];
+            let currentBatchId = Math.round(Math.random() * 50);
+            for (let index = 0; index < geometry.attributes.position.count; index++) {
+                array.push(currentBatchId);
 
-            // Change randomly batch id
-            if (Math.random() > 0.5) {
-                currentBatchId = Math.round(Math.random() * 50);
+                // Change randomly batch id
+                if (Math.random() > 0.5) {
+                    currentBatchId = Math.round(Math.random() * 50);
+                }
             }
-        }
-        geometry.setAttribute('_BATCHID', new THREE.BufferAttribute(Int32Array.from(array), 1));
+            geometry.setAttribute('_BATCHID', new THREE.BufferAttribute(Int32Array.from(array), 1));
 
-        const result = new THREE.Mesh(geometry, material);
+            const result = new THREE.Mesh(geometry, material);
 
-        result.batchTable = new C3DTBatchTable();
-        result.tileId = tileId;
+            result.batchTable = new C3DTBatchTable();
+            result.tileId = tileId;
 
-        return result;
-    };
+            return result;
+        };
+
+        after(() => {
+            stubFetcherJson.restore();
+        });
+    });
 
     let $3dTilesLayer;
     let source;
-
-    const url = 'test/data/unitTest/3dTiles/tileset.json';
-
     it('should instance C3DTilesLayer', function (done) {
         source = new C3DTilesSource({
-            url,
+            url: 'https://raw.githubusercontent.com/iTowns/iTowns2-sample-data/master/' +
+            '3DTiles/lyon1_with_surface_type_2018/tileset.json',
             networkOptions: process.env.HTTPS_PROXY ? { agent: new HttpsProxyAgent(process.env.HTTPS_PROXY) } : {},
         });