// ❌ Incomplete test coverage
test('isRef check', () => {
  expect(isRef(computed(() => 1))).toBe(true)
})

// ✅ Comprehensive test coverage
describe('isRef', () => {
  test('returns true for computed values', () => {
    expect(isRef(computed(() => 1))).toBe(true)
  })

  test('returns false for primitive values', () => {
    expect(isRef(0)).toBe(false)
    expect(isRef(1)).toBe(false)  // Test truthy primitive
    expect(isRef('')).toBe(false) // Test falsy primitive
  })
  
  test('returns true for ref values', () => {
    expect(isRef(ref(1))).toBe(true)
    expect(isRef(ref(null))).toBe(true)
  })
})