Create standalone browser port of LTX Athena with authenticated native API transport

frontend/lib/genspace-layout.test.ts

@@ -0,0 +1,61 @@
+import assert from 'node:assert/strict'
+import { beforeEach, describe, it } from 'node:test'
+import {
+  DEFAULT_PROMPT_BAR_HEIGHT,
+  GENSPACE_LAYOUT_STORAGE_KEY,
+  PROMPT_BAR_HEIGHT_LIMITS,
+  loadPromptBarHeight,
+  savePromptBarHeight,
+} from './genspace-layout.ts'
+
+function createMemoryStorage(initial: Record<string, string> = {}) {
+  const data = new Map(Object.entries(initial))
+  return {
+    getItem: (key: string) => data.get(key) ?? null,
+    setItem: (key: string, value: string) => {
+      data.set(key, value)
+    },
+  }
+}
+
+describe('genspace prompt-bar layout', () => {
+  let storage: ReturnType<typeof createMemoryStorage>
+
+  beforeEach(() => {
+    storage = createMemoryStorage()
+  })
+
+  it('loads the default height when nothing is stored', () => {
+    assert.equal(loadPromptBarHeight(storage), DEFAULT_PROMPT_BAR_HEIGHT)
+  })
+
+  it('round-trips a saved height', () => {
+    savePromptBarHeight(240, storage)
+    assert.equal(loadPromptBarHeight(storage), 240)
+    assert.equal(
+      storage.getItem(GENSPACE_LAYOUT_STORAGE_KEY),
+      JSON.stringify({ promptBarHeight: 240 }),
+    )
+  })
+
+  it('clamps heights outside the allowed range', () => {
+    savePromptBarHeight(PROMPT_BAR_HEIGHT_LIMITS.min - 50, storage)
+    assert.equal(loadPromptBarHeight(storage), PROMPT_BAR_HEIGHT_LIMITS.min)
+
+    savePromptBarHeight(PROMPT_BAR_HEIGHT_LIMITS.max + 80, storage)
+    assert.equal(loadPromptBarHeight(storage), PROMPT_BAR_HEIGHT_LIMITS.max)
+  })
+
+  it('falls back to the default when stored JSON is invalid', () => {
+    storage.setItem(GENSPACE_LAYOUT_STORAGE_KEY, '{not-json')
+    assert.equal(loadPromptBarHeight(storage), DEFAULT_PROMPT_BAR_HEIGHT)
+  })
+
+  it('falls back to the default when promptBarHeight is missing or not a number', () => {
+    storage.setItem(GENSPACE_LAYOUT_STORAGE_KEY, JSON.stringify({}))
+    assert.equal(loadPromptBarHeight(storage), DEFAULT_PROMPT_BAR_HEIGHT)
+
+    storage.setItem(GENSPACE_LAYOUT_STORAGE_KEY, JSON.stringify({ promptBarHeight: 'tall' }))
+    assert.equal(loadPromptBarHeight(storage), DEFAULT_PROMPT_BAR_HEIGHT)
+  })
+})