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|
Feature: Channel specs
Channel specs are marked by `type: :channel` or if you have set
`config.infer_spec_type_from_file_location!` by placing them in `spec/channels`.
A channel spec is a thin wrapper for an `ActionCable::Channel::TestCase`, and includes all
of the behavior and assertions that it provides, in addition to RSpec's own
behavior and expectations.
It also includes helpers from `ActionCable::Connection::TestCase` to make it possible to
test connection behavior.
Background:
Given action cable testing is available
And a file named "app/channels/chat_channel.rb" with:
"""ruby
class ChatChannel < ApplicationCable::Channel
def subscribed
reject unless params[:room_id].present?
end
def speak(data)
ActionCable.server.broadcast(
"chat_#{params[:room_id]}", text: data['message']
)
end
def echo(data)
data.delete("action")
transmit data
end
end
"""
Scenario: A simple passing example
Given a file named "spec/channels/chat_channel_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ChatChannel, type: :channel do
it "successfully subscribes" do
subscribe room_id: 42
expect(subscription).to be_confirmed
end
end
"""
When I run `rspec spec/channels/chat_channel_spec.rb`
Then the example should pass
Scenario: Verifying that a subscription is rejected
Given a file named "spec/channels/chat_channel_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ChatChannel, type: :channel do
it "rejects subscription" do
subscribe room_id: nil
expect(subscription).to be_rejected
end
end
"""
When I run `rspec spec/channels/chat_channel_spec.rb`
Then the example should pass
Scenario: Performing actions and checking transmissions
Given a file named "spec/channels/chat_channel_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ChatChannel, type: :channel do
it "successfully subscribes" do
subscribe room_id: 42
perform :echo, foo: 'bar'
expect(transmissions.last).to eq('foo' => 'bar')
end
end
"""
When I run `rspec spec/channels/chat_channel_spec.rb`
Then the example should pass
Scenario: A successful connection with url params
Given a file named "app/channels/application_cable/connection.rb" with:
"""ruby
class ApplicationCable::Connection < ActionCable::Connection::Base
identified_by :user_id
def connect
self.user_id = request.params[:user_id]
reject_unauthorized_connection unless user_id.present?
end
end
"""
And a file named "spec/channels/connection_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ApplicationCable::Connection, type: :channel do
it "successfully connects" do
connect "/cable?user_id=323"
expect(connection.user_id).to eq "323"
end
end
"""
When I run `rspec spec/channels/connection_spec.rb`
Then the example should pass
Scenario: A successful connection with cookies
Given a file named "app/channels/application_cable/connection.rb" with:
"""ruby
class ApplicationCable::Connection < ActionCable::Connection::Base
identified_by :user_id
def connect
self.user_id = cookies.signed[:user_id]
reject_unauthorized_connection unless user_id.present?
end
end
"""
And a file named "spec/channels/connection_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ApplicationCable::Connection, type: :channel do
it "successfully connects" do
cookies.signed[:user_id] = "324"
connect "/cable"
expect(connection.user_id).to eq "324"
end
end
"""
When I run `rspec spec/channels/connection_spec.rb`
Then the example should pass
Scenario: A successful connection with headers
Given a file named "app/channels/application_cable/connection.rb" with:
"""ruby
class ApplicationCable::Connection < ActionCable::Connection::Base
identified_by :user_id
def connect
self.user_id = request.headers["x-user-id"]
reject_unauthorized_connection unless user_id.present?
end
end
"""
And a file named "spec/channels/connection_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ApplicationCable::Connection, type: :channel do
it "successfully connects" do
connect "/cable", headers: { "X-USER-ID" => "325" }
expect(connection.user_id).to eq "325"
end
end
"""
When I run `rspec spec/channels/connection_spec.rb`
Then the example should pass
Scenario: A rejected connection
Given a file named "app/channels/application_cable/connection.rb" with:
"""ruby
class ApplicationCable::Connection < ActionCable::Connection::Base
identified_by :user_id
def connect
self.user_id = request.params[:user_id]
reject_unauthorized_connection unless user_id.present?
end
end
"""
And a file named "spec/channels/connection_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ApplicationCable::Connection, type: :channel do
it "rejects connection" do
expect { connect "/cable?user_id=" }.to have_rejected_connection
end
end
"""
When I run `rspec spec/channels/connection_spec.rb`
Then the example should pass
Scenario: Disconnect a connection
Given a file named "app/channels/application_cable/connection.rb" with:
"""ruby
class ApplicationCable::Connection < ActionCable::Connection::Base
identified_by :user_id
def connect
self.user_id = request.params[:user_id]
reject_unauthorized_connection unless user_id.present?
end
def disconnect
$stdout.puts "User #{user_id} disconnected"
end
end
"""
And a file named "spec/channels/connection_spec.rb" with:
"""ruby
require "rails_helper"
RSpec.describe ApplicationCable::Connection, type: :channel do
it "disconnects" do
connect "/cable?user_id=42"
expect { disconnect }.to output(/User 42 disconnected/).to_stdout
end
end
"""
When I run `rspec spec/channels/connection_spec.rb`
Then the example should pass
|
