require 'spec_helper'
require 'couch_potato-rspec'

class WithStubbedView
  include CouchPotato::Persistence

  view :stubbed_view, key: :x
end

describe 'stubbing the db' do
  it 'replaces CouchPotato.database with a double' do
    CouchPotato.stub_db

    expect(CouchPotato.database).to be_a(RSpec::Mocks::Double)
  end

  it 'returns the stub' do
    db = CouchPotato.stub_db

    expect(CouchPotato.database).to eq(db)
  end
end

describe 'stubbing a view' do
  before(:each) do
    @db = CouchPotato.stub_db
    @db.stub_view(WithStubbedView, :stubbed_view).with('123').and_return([:result])
  end

  it 'stubs the view to return a double' do
    expect(WithStubbedView.stubbed_view('123')).to be_a(RSpec::Mocks::Double)
  end

  it 'stubs the database to return fake results when called with the stub' do
    expect(@db.view(WithStubbedView.stubbed_view('123'))).to eq([:result])
  end

  it 'stubs the database to return the first fake result' do
    expect(@db.first(WithStubbedView.stubbed_view('123'))).to eq(:result)
    expect(@db.first!(WithStubbedView.stubbed_view('123'))).to eq(:result)
  end

  it 'raises an error if there is no first result' do
    @db.stub_view(WithStubbedView, :stubbed_view).and_return([])
    expect do
      @db.first!(WithStubbedView.stubbed_view('123'))
    end.to raise_error(CouchPotato::NotFound)
  end

  it "skips stubbing the first view (i.e. doesn't crash) if the fake result does not respond to first" do
    @db.stub_view(WithStubbedView, :stubbed_view).with('123').and_return(:results)

    expect(@db.view(WithStubbedView.stubbed_view('123'))).to eq(:results)
  end

  it 'supports the block style return syntax with `with`' do
    @db.stub_view(WithStubbedView, :stubbed_view).with('123') { :results }

    expect(@db.view(WithStubbedView.stubbed_view('123'))).to eq(:results)
  end

  it 'supports the block style return syntax without `with`' do
    @db.stub_view(WithStubbedView, :stubbed_view) { :results }

    expect(@db.view(WithStubbedView.stubbed_view('123'))).to eq(:results)
  end
end