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require "rspec/rails/feature_check"
if RSpec::Rails::FeatureCheck.has_action_cable_testing?
class StreamModel < Struct.new(:id)
def to_gid_param
"StreamModel##{id}"
end
end
class StreamChannel < ActionCable::Channel::Base
def self.channel_name
"broadcast"
end
def subscribed
stream_from "chat_#{params[:id]}" if params[:id]
stream_for StreamModel.new(params[:user]) if params[:user]
end
end
end
RSpec.describe "have_stream matchers", skip: !RSpec::Rails::FeatureCheck.has_action_cable_testing? do
include RSpec::Rails::ChannelExampleGroup
tests StreamChannel if respond_to?(:tests)
before { stub_connection }
describe "have_streams" do
it "raises when no subscription started" do
expect {
expect(subscription).to have_streams
}.to raise_error(/Must be subscribed!/)
end
it "does not allow usage" do
subscribe
expect {
expect(subscription).to have_streams
}.to raise_error(ArgumentError, /have_streams is used for negated expectations only/)
end
context "with negated form" do
it "raises when no subscription started" do
expect {
expect(subscription).not_to have_streams
}.to raise_error(/Must be subscribed!/)
end
it "raises ArgumentError when no subscription passed to expect" do
subscribe id: 1
expect {
expect(true).not_to have_streams
}.to raise_error(ArgumentError)
end
it "passes with negated form" do
subscribe
expect(subscription).not_to have_streams
end
it "fails with message" do
subscribe id: 1
expect {
expect(subscription).not_to have_streams
}.to raise_error(/expected not to have any stream started/)
end
end
end
describe "have_stream_from" do
it "raises when no subscription started" do
expect {
expect(subscription).to have_stream_from("stream")
}.to raise_error(/Must be subscribed!/)
end
it "raises ArgumentError when no subscription passed to expect" do
subscribe id: 1
expect {
expect(true).to have_stream_from("stream")
}.to raise_error(ArgumentError)
end
it "passes" do
subscribe id: 1
expect(subscription).to have_stream_from("chat_1")
end
it "fails with message" do
subscribe id: 1
expect {
expect(subscription).to have_stream_from("chat_2")
}.to raise_error(/expected to have stream "chat_2" started, but have \["chat_1"\]/)
end
context "with negated form" do
it "passes" do
subscribe id: 1
expect(subscription).not_to have_stream_from("chat_2")
end
it "fails with message" do
subscribe id: 1
expect {
expect(subscription).not_to have_stream_from("chat_1")
}.to raise_error(/expected not to have stream "chat_1" started, but have \["chat_1"\]/)
end
end
context "with composable matcher" do
it "passes" do
subscribe id: 1
expect(subscription).to have_stream_from(a_string_starting_with("chat"))
end
it "fails with message" do
subscribe id: 1
expect {
expect(subscription).to have_stream_from(a_string_starting_with("room"))
}.to raise_error(/expected to have stream a string starting with "room" started, but have \["chat_1"\]/)
end
end
end
describe "have_stream_for" do
it "raises when no subscription started" do
expect {
expect(subscription).to have_stream_for(StreamModel.new(42))
}.to raise_error(/Must be subscribed!/)
end
it "raises ArgumentError when no subscription passed to expect" do
subscribe user: 42
expect {
expect(true).to have_stream_for(StreamModel.new(42))
}.to raise_error(ArgumentError)
end
it "passes" do
subscribe user: 42
expect(subscription).to have_stream_for(StreamModel.new(42))
end
it "fails with message" do
subscribe user: 42
expect {
expect(subscription).to have_stream_for(StreamModel.new(31_337))
}.to raise_error(/expected to have stream "broadcast:StreamModel#31337" started, but have \["broadcast:StreamModel#42"\]/)
end
context "with negated form" do
it "passes" do
subscribe user: 42
expect(subscription).not_to have_stream_for(StreamModel.new(31_337))
end
it "fails with message" do
subscribe user: 42
expect {
expect(subscription).not_to have_stream_for(StreamModel.new(42))
}.to raise_error(/expected not to have stream "broadcast:StreamModel#42" started, but have \["broadcast:StreamModel#42"\]/)
end
end
end
end
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