如何优雅地检查RSpec中是否存在记录

Question

有没有更好的方法来检查RSpec中是否存在记录？

Foo.where(bar: 1, baz:2).count.should == 1

Answer 1

使用Rspec 2.13.0，我能够做到

Foo.where(bar: 1, baz: 2).should exist

---

修改

Rspec现在有an expect syntax：

expect(Foo.where(bar: 1, bax: 2)).to exist

Answer 2

对于rspec-rails＆gt; 3.0

拥有博客模型，

describe 'POST #create' do
  it 'creates a post' do
    post :create, blog: { title: 'blog title' }

    # Returns true if the post was successfully added
    expect(Blog.where(title: 'blog title')).to be_present
  end
end

Answer 3

使用expect语法：

expect(Foo.where(bar: 1, baz: 2)).not_to be_empty
expect(Foo.where(bar: 1, baz: 2)).to exist

Answer 4

使用Foo.exists?(bar: 1, baz: 2).should be_true

Answer 5

Foo.where(bar: 1, baz: 2).exists?.should be_true

Answer 6

对我有用：

expect(Foo.where(bar: 1, baz:2)).not_to be nil

Answer 7

RSpec.describe Foo do
  let(:foo_attributes) { { bar: 1, baz: 2 } }
  before { FactoryBot.create(:foo, **foo_attributes) }
  subject { Foo.where foo_attributes }

  it { is_expected.to exist }
end