Add unit test for status bar

vscode/src/services/StatusBar.test.ts

@@ -0,0 +1,39 @@
+import { allValuesFrom } from '@sourcegraph/cody-shared'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { StatusBarAlignment, vsCodeMocks } from '../testutils/mocks'
+import { CodyStatusBar } from './StatusBar'
+
+vi.mock('vscode', () => ({
+    ...vsCodeMocks,
+    StatusBarAlignment,
+}))
+
+describe('StatusBar loader debouncing', () => {
+    let statusBar: CodyStatusBar
+    let observedChanges: Promise<Set<any>[]>
+
+    beforeEach(() => {
+        vi.useFakeTimers()
+        statusBar = CodyStatusBar.init()
+        // Track all changes to the loaders collection
+        observedChanges = allValuesFrom(statusBar['loaders'].changes).then(changes =>
+            changes.map(set => new Set(set))
+        )
+    })
+
+    afterEach(() => {
+        statusBar?.dispose()
+        vi.useRealTimers()
+    })
+
+    it('tracks loader mutations', async () => {
+        statusBar.addLoader({ title: 'Test Loader' })
+        statusBar['loaders'].complete()
+
+        const states = await observedChanges
+        // Initial empty state
+        expect(states[0].size).toBe(0)
+        // After adding loader
+        expect(states[1].size).toBe(1)
+    })
+})

vscode/src/services/StatusBar.ts

@@ -40,7 +40,7 @@ const QUICK_PICK_ITEM_EMPTY_INDENT_PREFIX = '\u00A0\u00A0\u00A0\u00A0\u00A0 '
 
 const ONE_HOUR = 60 * 60 * 1000
 
-const DEBOUNCE_TIMEOUT_MS = 300
+const DEBOUNCE_TIMEOUT_MS = 250
 
 const STATUS_BAR_INTERACTION_COMMAND = 'cody.status-bar.interacted'
 

vscode/src/testutils/mocks.ts

@@ -821,6 +821,16 @@ export const vsCodeMocks = {
             key: 'foo',
             dispose: () => {},
         }),
+        createStatusBarItem: () => ({
+            dispose: () => {},
+            show: () => {},
+            hide: () => {},
+            text: '',
+            tooltip: '',
+            command: '',
+            backgroundColor: undefined,
+            color: undefined,
+        }),
         withProgress: async (
             options: vscode_types.ProgressOptions,
             task: (