discourse/spec/lib/service_spec.rb

96 lines
2.5 KiB
Ruby

# frozen_string_literal: true
RSpec.describe Service do
let(:service_class) { Class.new { include Service::Base } }
describe "Steps" do
describe "Model step" do
context "when providing default values to step implementation" do
before do
service_class.class_eval do
model :my_model
def fetch_my_model(default_arg: 2)
true
end
end
end
it "raises an error" do
expect { service_class.call }.to raise_error(/In model 'my_model': default values/)
end
end
end
describe "Policy step" do
context "when providing default values to step implementation" do
before do
service_class.class_eval do
policy :my_policy
def my_policy(default_arg: 2)
true
end
end
end
it "raises an error" do
expect { service_class.call }.to raise_error(/In policy 'my_policy': default values/)
end
end
end
describe "Generic step" do
context "when providing default values to step implementation" do
before do
service_class.class_eval do
step :generic_step
def generic_step(default_arg: 2)
true
end
end
end
it "raises an error" do
expect { service_class.call }.to raise_error(/In step 'generic_step': default values/)
end
end
end
end
describe "Parameters handling" do
subject(:result) { service_class.call(**args) }
context "when calling the service without any params" do
let(:args) { {} }
it "instantiate a default params object" do
expect(result[:params]).not_to be_nil
end
end
context "when calling the service with params" do
let(:args) { { params: { param1: "one" } } }
context "when there is no `params` step defined" do
it "allows accessing `params` through methods" do
expect(result[:params].param1).to eq("one")
end
it "returns nothing for a non-existent key" do
expect(result[:params].non_existent_key).to be_nil
end
end
context "when there is a `params` step defined" do
before { service_class.class_eval { params { attribute :param1 } } }
it "returns the contract as the params object" do
expect(result[:params]).to be_a(Service::ContractBase)
end
end
end
end
end