New file fix (#77)

* Fix issue with new file

* Add test for file creation

python/jupytergis_core/src/jgisplugin/plugins.ts

@@ -109,7 +109,7 @@ const activate = (
         format: 'text',
         size: undefined,
         content:
-          '{\n\t"layers": {},\n\t"sources": {},\n\t"options": {"latitude": 0, "longitude": 0, "zoom": 0, "bearing": 0, "pitch": 0},\n\t"layerTree": []\n\t"terrain": {}\n}'
+          '{\n\t"layers": {},\n\t"sources": {},\n\t"options": {"latitude": 0, "longitude": 0, "zoom": 0, "bearing": 0, "pitch": 0},\n\t"layerTree": [],\n\t"terrain": {"source": "", "exaggeration": 0}\n}'
       });
 
       // Open the newly created file with the 'Editor'

ui-tests/tests/new-file.spec.ts

@@ -0,0 +1,24 @@
+import { expect, test } from '@jupyterlab/galata';
+
+test.describe('#newFile', () => {
+  test.afterEach(async ({ page }) => {
+    await page.activity.closeAll();
+  });
+
+  test('New file should open with no errors', async ({ page }) => {
+    await page
+      .getByLabel('notebook content')
+      .getByText('New JGIS File')
+      .click();
+
+    const tab = page.getByLabel('notebook content');
+    const sources = page.getByText('Sources', { exact: true });
+    const layers = page.getByText('Layers');
+    const map = page.getByLabel('Map');
+
+    await expect(tab).toBeVisible();
+    await expect(sources).toBeVisible();
+    await expect(layers).toBeVisible();
+    await expect(map).toBeVisible();
+  });
+});