[Test] Add test on load image widget (#2875)

Co-authored-by: github-actions <github-actions@github.com>

browser_tests/assets/widgets/load_image_widget.json

@@ -0,0 +1,46 @@
+{
+  "last_node_id": 10,
+  "last_link_id": 10,
+  "nodes": [
+    {
+      "id": 10,
+      "type": "LoadImage",
+      "pos": [
+        50,
+        50
+      ],
+      "size": [
+        315,
+        314
+      ],
+      "flags": {},
+      "order": 0,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [
+        {
+          "name": "IMAGE",
+          "type": "IMAGE",
+          "links": null
+        },
+        {
+          "name": "MASK",
+          "type": "MASK",
+          "links": null
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "LoadImage"
+      },
+      "widgets_values": [
+        "example.png",
+        "image"
+      ]
+    }
+  ],
+  "links": [],
+  "groups": [],
+  "config": {},
+  "extra": {},
+  "version": 0.4
+}

browser_tests/widget.spec.ts

@@ -127,3 +127,10 @@ test.describe('Dynamic widget manipulation', () => {
     await expect(comfyPage.canvas).toHaveScreenshot('ksampler_widget_added.png')
   })
 })
+
+test.describe('Load image widget', () => {
+  test('Can load image', async ({ comfyPage }) => {
+    await comfyPage.loadWorkflow('widgets/load_image_widget')
+    await expect(comfyPage.canvas).toHaveScreenshot('load_image_widget.png')
+  })
+})