test: add e2e test for color pickers

Author: seanwu1105

python/tests/assets/qss/QLabel.qss

@@ -1,21 +1,21 @@
 /* for color provider test */
 
-QLabel { border-color: #ffa600 }
+QLabel { border-color: #ffff00 }
 
-QLabel { border-color: #7aff00d4 }
+QLabel { border-color: #ffffff00 }
 
-QLabel { border-color: #f00 }
+QLabel { border-color: #ff0 }
 
 QLabel { border-color: rgb(100%, 100%, 0%)}
 
 QLabel { border-color: rgb(255, 255, 0%)}
 
-QLabel { border-color: rgba(255, 255, 0%, 100)}
+QLabel { border-color: rgba(255, 255, 0%, 100%)}
 
 QLabel { border-color: hsv(60, 255, 100%)}
 
-QLabel { border-color: hsva(60, 255, 100%, 100)}
+QLabel { border-color: hsva(60, 255, 100%, 100%)}
 
 QLabel { border-color: hsl(60, 100%, 50%) }
 
-QLabel { border-color: hsla(60, 100%, 50%, 100) }
+QLabel { border-color: hsla(60, 100%, 50%, 100%) }

src/test/suite/qss/e2e.test.ts

@@ -0,0 +1,44 @@
+import * as assert from 'node:assert'
+import * as path from 'node:path'
+import type { ColorInformation, TextDocument } from 'vscode'
+import { commands, window, workspace } from 'vscode'
+import { URI } from 'vscode-uri'
+import { E2E_TIMEOUT, TEST_ASSETS_PATH } from '../test-utils'
+
+suite('qss/e2e', () => {
+  suite('color picker', () => {
+    suite('when open QLabel.qss', () => {
+      let document: TextDocument
+
+      suiteSetup(async function () {
+        this.timeout(E2E_TIMEOUT)
+
+        document = await openAndShowTestQssFile('QLabel.qss')
+      })
+
+      test('should contain color info', async () => {
+        const colorInformationList: ColorInformation[] =
+          await commands.executeCommand(
+            'vscode.executeDocumentColorProvider',
+            document.uri,
+          )
+
+        assert.ok(colorInformationList.length > 0)
+        colorInformationList.forEach(i => {
+          assert.strictEqual(i.color.red, 1)
+          assert.strictEqual(i.color.green, 1)
+          assert.strictEqual(i.color.blue, 0)
+          assert.strictEqual(i.color.alpha, 1)
+        })
+      }).timeout(E2E_TIMEOUT)
+    }).timeout(E2E_TIMEOUT)
+  }).timeout(E2E_TIMEOUT)
+}).timeout(E2E_TIMEOUT)
+
+async function openAndShowTestQssFile(fileName: string) {
+  const document = await workspace.openTextDocument(
+    URI.file(path.resolve(TEST_ASSETS_PATH, 'qss', fileName)),
+  )
+  await window.showTextDocument(document)
+  return document
+}