```ruby
require 'rails_helper'

describe Staff::Authenticator do
  describe '#authenticate' do
    example '正しいパスワードならtrueを返す' do
      m = build(:staff_member)
      expect(Staff::Authenticator.new(m).authenticate('pw')).to be_truthy
    end

    example '誤ったパスワードならfalseを返す' do
      m = build(:staff_member)
      expect(Staff::Authenticator.new(m).authenticate('xy')).to be_falsey
    end

    example 'パスワード未設定ならfalseを返す' do
      m = build(:staff_member, password: nil)
      expect(Staff::Authenticator.new(m).authenticate(nil)).to be_falsey
    end
  end
end
```

Add Spec in suspended true
user
```ruby
require 'rails_helper'

describe Staff::Authenticator do
  describe '#authenticate' do
    example '正しいパスワードならtrueを返す' do
      m = build(:staff_member)
      expect(Staff::Authenticator.new(m).authenticate('pw')).to be_truthy
    end

    example '誤ったパスワードならfalseを返す' do
      m = build(:staff_member)
      expect(Staff::Authenticator.new(m).authenticate('xy')).to be_falsey
    end

    example 'パスワード未設定ならfalseを返す' do
      m = build(:staff_member, password: nil)
      expect(Staff::Authenticator.new(m).authenticate(nil)).to be_falsey
    end

    example '停止フラグが立っていればfalseを返す' do
      m = build(:staff_member, suspended: true)
      expect(Staff::Authenticator.new(m).authenticate('pw')).to be_falsey
    end

  end
end
```
assistant